chore(release): 0.15.1 (#324)

* chore(release): 0.15.1

- bump version: package.json / dsh.plugin.json / SIDEBAR_SERVICE_VERSION
- README / README_EN: add v0.15.1 changelog (sidechat Codex-style transcript
  rework, terminal park-frame pty keep-alive, file-tree drag gating, README
  rewrite); plugin ecosystem 28+ with two new entries
  (dsh-better-sidebar-starter, my-dsh-plugins) and per-category <details>
  collapsible listings

* docs(readme): add community section placeholder for WeChat/QQ group QR codes

.github/ISSUE_TEMPLATE/issue_report.yml

@@ -0,0 +1,101 @@
+name: 📋 问题报告 / Issue Report
+description: 报告 Bug、功能请求或建议（中英双语）| Report a bug, feature request or suggestion (bilingual)
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## 🙏 感谢反馈 / Thanks for reporting!
+        请尽量完整填写以下信息，能显著加快定位与处理速度。
+        Please fill out the following fields as completely as possible.
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: 提交前确认 / Pre-submit checklist
+      description: 请逐项确认 | Please confirm each item
+      options:
+        - label: 我已搜索现有 issue，确认没有**完全相同**的条目（只有完全一致才算重复）| I searched existing issues and confirmed there is no **exact duplicate** (only exactly identical issues count as duplicates)
+          required: true
+        - label: 我已确认使用最新版本 dsh-better-sidebar / I confirmed I am on the latest dsh-better-sidebar version
+          required: false
+
+  - type: dropdown
+    id: environment-type
+    attributes:
+      label: 运行环境 / Environment
+      description: 你使用的是哪种运行方式？| Which runtime are you using?
+      multiple: false
+      options:
+        - DSH Web（浏览器访问）/ DSH Web (browser access)
+        - Desktop 实现（如 deepseek-harness-desktop）/ Desktop build (e.g. deepseek-harness-desktop)
+        - 其他 / 不确定 (Other / Not sure)
+    validations:
+      required: true
+
+  - type: input
+    id: dsh-web-version
+    attributes:
+      label: DSH Web 版本 + 浏览器 / DSH Web version + Browser
+      description: |
+        例：DSH 0.1.1-rc.1 + Chrome 151（macOS）。
+        Example: DSH 0.1.1-rc.1 + Chrome 151 (macOS).
+      placeholder: "DSH 版本 / version + 浏览器 / browser（如 0.1.1-rc.1 + Chrome 151）"
+    validations:
+      required: false
+
+  - type: input
+    id: desktop-repo
+    attributes:
+      label: Desktop 实现仓库 / Desktop repo（源头 / upstream）
+      description: |
+        若使用 Desktop 实现，请附上源头仓库链接，方便对照宿主行为。
+        If using a Desktop build, please link the upstream Desktop repo for host-behavior reference.
+      placeholder: "https://github.com/anywhere-labs/deepseek-harness-desktop"
+    validations:
+      required: false
+
+  - type: input
+    id: plugin-version
+    attributes:
+      label: 插件版本 / Plugin version
+      description: dsh-better-sidebar 的版本号 | The dsh-better-sidebar version
+      placeholder: "如 0.13.1（`dsh plugin --profile web add dsh-better-sidebar@latest` 安装的版本）"
+    validations:
+      required: false
+
+  - type: dropdown
+    id: category
+    attributes:
+      label: 类别 / Category
+      description: 请选择本 issue 的类型 | Please choose the type of this issue
+      multiple: false
+      options:
+        - 🐛 Bug（功能异常 / Something is broken）
+        - ✨ 功能请求（新功能 / Feature request）
+        - 💡 建议（体验改进 / Suggestion & improvement）
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: 描述 / Description
+      description: |
+        请详细描述：现象、期望行为、（Bug 必填）复现步骤、截图/日志等。
+        Describe in detail: what happened, expected behavior, reproduction steps (required for bugs), screenshots/logs, etc.
+      placeholder: |
+        现象 / What happened:
+        期望行为 / Expected behavior:
+        复现步骤（Bug 必填）/ Steps to reproduce (required for bugs):
+        截图或日志 / Screenshots or logs:
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: 补充信息 / Additional context
+      description: 其他有助于定位的信息（可选）| Anything else that may help (optional)
+      placeholder: "操作系统 / OS、配置文件、报错堆栈、临时 workaround 等 / OS, config files, error stack, temporary workarounds, etc."
+    validations:
+      required: false

.github/workflows/ci.yml

@@ -0,0 +1,114 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+# Cancel a superseded PR run (it is on a stale commit); never cancel a
+# push run — it is already producing the post-merge signal. The mount job
+# boots a real DSH + Chromium, so the savings matter there most.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          # Tests run git log against this repository and need the full history.
+          fetch-depth: 0
+      - uses: pnpm/action-setup@v6
+        with:
+          version: 11
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 22
+          cache: pnpm
+      # The plugin's git revert/cherry-pick spawn git without setting an
+      # identity (deliberate, see tests/smoke.spec.ts) and rely on ambient
+      # config; the runner has none by default.
+      - name: Configure git identity for tests
+        run: |
+          git config --global user.name "dsh-better-sidebar-ci"
+          git config --global user.email "ci@dsh.invalid"
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+      - name: Typecheck
+        run: pnpm typecheck
+      - name: Test
+        run: pnpm test
+      - name: Build
+        run: pnpm build
+      # The consumer-facing declaration surface guard: a browser-only plugin
+      # (no @types/node, skipLibCheck: false) must type-check against the
+      # shipped lib/types. Runs AFTER build (it reads the built output).
+      - name: Check consumer type surface
+        run: pnpm check:consumer-types
+
+  # Pack the plugin as an npm tarball, mount it into a REAL DSH instance
+  # through the official `dsh plugin --profile web add` channel, and render
+  # the DSH web UI headlessly (Playwright Chromium) to prove the plugin
+  # mounts without crashing the shell. Drives `pnpm test:mount`, which boots
+  # a keyless `dsh web` against a scratch profile and sweeps every built-in
+  # sidebar tab. No API key needed — the whole lane is deterministic.
+  plugin-mount:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    # CI runs must never report to the production telemetry endpoint baked
+    # into the DSH composition (same guard DSH's own CI uses).
+    env:
+      DSH_TELEMETRY_DISABLED: '1'
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: pnpm/action-setup@v6
+        with:
+          version: 11
+
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      # Pin the DSH CLI the lane mounts into; the profile's bundle stack
+      # (dsh-base / dsh-web-app) resolves from this installation. Keep in
+      # step with the plugin's @deepseek-ai/* peer range when bumping.
+      - name: Install dsh CLI (pinned)
+        run: npm install -g @deepseek-ai/dsh@0.1.1-rc.2
+
+      # lib/ is gitignored; the tarball is produced from this build.
+      - name: Build and pack the npm tarball
+        run: pnpm build && pnpm pack
+
+      - name: Install Playwright Chromium
+        run: pnpm exec playwright install --with-deps chromium
+
+      - name: Mount + headless-render smoke
+        run: pnpm test:mount
+
+      # Aggregate double-mount regression: a fixture aggregate bundle mounts
+      # dsh-better-sidebar under its own entry id BEFORE the plugin's bundle
+      # row; the plugin must back off (no duplicate /sidebar/api, boot OK).
+      # Uses the pinned DSH CLI installed above.
+      - name: Aggregate double-mount regression
+        env:
+          DSH_CMD: dsh
+        run: bash scripts/e2e-aggregate-mount.sh
+
+      - name: Upload Playwright report on failure
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: |
+            playwright-report/
+            test-results/
+          if-no-files-found: ignore

.github/workflows/release.yml

@@ -0,0 +1,97 @@
+name: Release
+
+# Publishes `dsh-better-sidebar` to npm via npm Trusted Publishing (OIDC) —
+# no NPM_TOKEN secret required, provenance is attached to the tarball.
+#
+# Trigger: a GitHub Release is published (tag vX.Y.Z). The tag MUST match
+# package.json `version`; the workflow verifies this before publishing.
+#
+# One-time npm-side setup (manual, on npmjs.com):
+#   1. package `dsh-better-sidebar` -> Settings -> Publishing access
+#      -> Trusted Publishers -> "Add Trusted Publisher".
+#   2. Provider: GitHub Actions
+#      Organization or user: omdsh-dev
+#      Repository:           DSH-better-sidebar
+#      Workflow filename:    release.yml
+#      Environment:          (blank)
+#   3. Save. Do NOT add an NPM_TOKEN secret — Trusted Publishing replaces it.
+# Canonical reference: https://docs.npmjs.com/trusted-publishers
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      dry_run:
+        description: Pack and verify everything, but do not publish
+        type: boolean
+        default: false
+
+permissions:
+  contents: read
+  id-token: write  # mint the OIDC token npm Trusted Publishing exchanges
+
+concurrency:
+  group: npm-release
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    name: build · verify · publish
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          # Tests run git log against this repository and need full history.
+          fetch-depth: 0
+
+      - uses: pnpm/action-setup@v6
+        with:
+          version: 11
+
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 22
+          registry-url: https://registry.npmjs.org
+          cache: pnpm
+
+      # The plugin's git revert/cherry-pick spawn git without an identity
+      # (see tests/smoke.spec.ts); the runner has none by default.
+      - name: Configure git identity for tests
+        run: |
+          git config --global user.name "dsh-better-sidebar-ci"
+          git config --global user.email "ci@dsh.invalid"
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Verify release tag matches package.json version
+        if: github.event_name == 'release'
+        env:
+          RELEASE_TAG: ${{ github.event.release.tag_name }}
+        run: |
+          expected="v$(node -p "require('./package.json').version")"
+          echo "package.json version: ${expected#v}"
+          echo "release tag:          ${RELEASE_TAG}"
+          if [ "${RELEASE_TAG}" != "${expected}" ]; then
+            echo "::error::Release tag ${RELEASE_TAG} does not match package.json version ${expected#v} (expected ${expected})."
+            exit 1
+          fi
+
+      - name: Build
+        run: pnpm build
+
+      - name: Typecheck
+        run: pnpm typecheck
+
+      - name: Test
+        run: pnpm test
+
+      - name: Dry-run publish (validation only)
+        if: github.event_name == 'workflow_dispatch' && github.event.inputs.dry_run == 'true'
+        run: pnpm publish --dry-run --no-git-checks
+
+      - name: Publish to npm
+        if: github.event_name == 'release' || github.event.inputs.dry_run != 'true'
+        run: pnpm publish --provenance --access public --no-git-checks

.gitignore

@@ -146,3 +146,11 @@ lib/
 # plugin-registry install staging (assembled by scripts/package-registry.mjs)
 registry/
 .npmrc
+
+# stray npm cache scratch dir
+.npm-cache-tmp/
+
+# Playwright headless-render lane (tests/e2e) artifacts
+playwright-report/
+test-results/
+

AGENTS.md

@@ -6,6 +6,34 @@ better-sidebar 从 v0.4.0 起暴露 `ctx.betterSidebar` 服务（Cordis context
 
 ---
 
+## 0. 仓库硬约束（所有本仓库插件必须遵守）
+
+- **禁止修改 DeepSeek Harness (DSH) 源码**：对官方源码 checkout（`~/.dsh/source/current`）零写入——不得改 harness 包、不得把 harness 改动提交到它的分支。
+- **代码改动必须走 PR**：功能 / 修复 / 测试等非文档改动一律在分支上开发（`feat/*` / `fix/*`），用 `gh pr create` 发起 PR，review 合并后才进 main；**仅纯文档类改动**（README / AGENTS.md / docs/ 等）允许直接推送到 main。
+- **挂载只走 `cordis.patch.yml` + profile 机制**（`~/.dsh/profiles/<profile>/`），插件永远作为独立包被 profile 引用，不反向侵入 DSH。
+- 需要 harness 没有的能力时，用 DSH **现成的只读/公开 API** 或插件自有路由实现（参考 §7 的 `jobs.output` 事件回放：读会话事件日志而非动注册表）；如果确实做不到，先向用户说明取舍，而不是直接改 DSH。
+
+### CI 挂载冒烟（`plugin-mount` job / `pnpm test:mount`）
+
+仓库的 CI 有一条「npm 打包 → 真实挂载 → 无头渲染」门禁（`.github/workflows/ci.yml` 的 `plugin-mount` job），证明**打包产物**在真实 DSH 上挂载后无头渲染不会 crash：
+
+1. `pnpm build && pnpm pack` 产出 tarball（与发布产物一致）。
+2. `scripts/e2e-mount.sh` 用官方 CLI 把它装进一个**全新 scratch profile**（`dsh plugin --profile web add file:<tarball>`，触发 `dsh.profile.bundles` 协调），然后启动真实 `dsh web`（keyless，`--port 0`）。
+3. `tests/e2e/mount.e2e.ts`（Playwright Chromium）加载页面，断言外壳与 `[data-dsh-better-sidebar]` 挂载、无 `dsh-better-sidebar:` 错误条、无 pageerror/插件 console 错误，显式展开面板（`openByDefault` 默认关）后通过「+ 菜单」逐个打开内置 tab（含终端懒加载 chunk）深扫，再经 Files 文件窗口的树打开 seed 文件强制加载 editor 懒加载 chunk（`client-editor.js`，独立模式：每个文件新开 tab，seed 的 home tab 保持资源管理器）——缺失的内置 tab 或 chunk 都会使门禁变红。
+
+本地跑：`pnpm build && pnpm pack && pnpm exec playwright install chromium && pnpm test:mount`（需 PATH 上有 `dsh` 或可经 npx 拉取）。DSH CLI 版本在 CI 钉住 `@deepseek-ai/dsh@0.1.1-rc.2`（挂载冒烟验证基线；peer 下限保持 `^0.1.0-rc.8`，rc.8 与 0.1.1-rc.x 双向兼容）。`tests/e2e` 的 spec 命名 `*.e2e.ts` + vitest `exclude` 双保险与 vitest 隔离；**改动 vitest `exclude` 时必须保留默认排除项**（`exclude` 会整体替换默认值）。
+
+### npm 发版（GitHub Release → npm publish）
+
+`.github/workflows/release.yml` 在 GitHub Release 发布（tag `vX.Y.Z`）时自动发版到 npm：
+
+1. **发版前置**：`package.json` 版本号 bump 到 `X.Y.Z`（manifest 一致性守卫会校验其它副本），CI 全绿后打 tag `vX.Y.Z` 并发布 GitHub Release。tag 必须与 package.json 版本一致——workflow 在发布前校验，不匹配直接失败、不发版。
+2. **流程**：workflow 依次执行 `pnpm build` / `pnpm typecheck` / `pnpm test`，校验 tag，然后 `pnpm publish --provenance --access public`（`prepublishOnly` 会重建产物；产物带 provenance 签名）。
+3. **认证**：走 npm **Trusted Publishing（OIDC）**，不需要也不应配置 `NPM_TOKEN` secret。一次性手动配置（在 npmjs.com 完成）：package `dsh-better-sidebar` → Settings → Publishing access → Trusted Publishers → Add Trusted Publisher，字段为 Provider `GitHub Actions`、Organization `omdsh-dev`、Repository `DSH-better-sidebar`、**Workflow filename `release.yml`**、Environment 留空。未配置前发布会失败（OIDC 交换报错），配置后无需改 workflow。
+4. **调试**：`workflow_dispatch` 手动触发 + `dry_run=true` 只打包验证、不发版。
+
+---
+
 ## 1. 服务定位
 
 - **服务名**：`betterSidebar`（即 `ctx.betterSidebar`）
@@ -25,7 +53,7 @@ better-sidebar 从 v0.4.0 起暴露 `ctx.betterSidebar` 服务（Cordis context
 {
   "name": "my-plugin",
   "peerDependencies": {
-    "cordis": "^4.0.0-rc.7",
+    "cordis": "^4.0.0-rc.8",
     "dsh-better-sidebar": "workspace:*"
   },
   "peerDependenciesMeta": {
@@ -78,7 +106,16 @@ export function apply(ctx: Context): void {
 import type { TabDescriptor, FileViewerDescriptor, BetterSidebarService } from 'dsh-better-sidebar'
 ```
 
-类型定义在 `lib/types/client/service.d.ts`，通过 `package.json` 的 `./client/service`（别名 `./client/api`）exports 子路径暴露。
+类型定义在 `lib/types/client/service.d.ts`，通过 `package.json` 的 `./client/service`（别名 `./client/api`）exports 子路径暴露。v0.12.0 起服务模块还 re-export 了完整的状态词汇表，消费者可以直接命名（不再只能靠推断）：
+
+```ts
+import type {
+  SidebarTab, SidebarState, SidebarStore, SidebarSnapshot, SidebarDiffRef, TabType,
+  SessionScope, SidebarPrefs, OpenTabSeed, SidebarSettingsRenderProps,
+} from 'dsh-better-sidebar/client/service'
+```
+
+> 💡 **类型合并触发路径**：`import type {} from 'dsh-better-sidebar/client/service'` 同样会加载 `Context` 的 augmentation（`declare module 'cordis'` 在 context-types.d.ts 中，service 声明会拉入它）——纯浏览器侧插件建议走 `client/service` 路径，避免拉进宿主半的 Node 类型图（主入口 `dsh-better-sidebar` 的声明面含宿主代码，宿主消费者本就处于 Node 环境）。client 可达声明图（`client/*` + context-types + html-route + prefs-shared）自 v0.12.0 起**零 Node 依赖**（`scripts/check-consumer-types.sh` 守护），无 `@types/node`、`skipLibCheck: false` 也能编译。
 
 ---
 
@@ -94,7 +131,7 @@ interface TabDescriptor {
   title: string | (() => string)
   /** 图标：ReactNode 或 (size: number) => ReactNode */
   icon?: ReactNode | ((size: number) => ReactNode)
-  /** + 菜单排序（升序）；默认 100。内置：explorer=10, git=20, subagent=30, terminal=40 */
+  /** + 菜单排序（升序）；默认 100。内置：editor=10, git=20, subagent=30, terminal=40, browser=50 */
   order?: number
   /** 从 + 菜单隐藏（editor/diff 用：由其他流程触发打开，不在菜单里） */
   hidden?: boolean
@@ -108,28 +145,117 @@ interface TabDescriptor {
   /**
    * 去重键：openTab 时若已存在 dedupeKey 相同的 tab，则聚焦而非新开。
    * 返回 undefined 表示不去重（每次都新开，但同 id 会被 id 安全网聚焦）。
-   * 内置策略：explorer/git/subagent 用 single: true；editor 用 tab => tab.path；diff 用 tab => tab.id。
+   * 内置策略：git/subagent 用 single: true；editor 用 tab => tab.path；diff 用 tab => tab.id。
    */
-  dedupeKey?: (tab: SidebarTab) => string | undefined
+  dedupeKey?: (tab: SidebarTab) => string | undefined  // 必须保持纯函数：每次 open 会求值两次，抛错会向外传播
   /**
    * 自定义 tab 创建（minting SidebarTab + 状态 patch）。
    * 返回 null 拒绝创建。terminal 用它生成 terminal:<n> id 并递增 nextTerminal。
    * 省略时用默认 { id, type, title } + seed 里的 path/diff。
    */
   createTab?: (state: SidebarState) => { tab: SidebarTab; patch?: Partial<SidebarState> } | null
+  /**
+   * 外链点击目标认领（v0.13.0+）：聊天/界面外链被接管（`browserInterceptLinks`
+   * 总闸 + URL 对应协议开关均开）时，第一个 `urlTarget(url)` 命中且未被设置
+   * 禁用的注册 tab 类型以 `openTab({ type, url, title: hostname })` 打开——
+   * URL 即全部载荷（tab 从 `tab.path` 读取）。注册顺序先到先得；谓词抛错被
+   * 吞掉（跳过该类型）。内置 browser 不声明 urlTarget，永远是隐式兜底，不会
+   * 遮蔽插件声明。要同时容纳多个 URL 需用 createTab 铸造 per-URL id（browser
+   * 同款模式）；否则同类型二次点击被 id 安全网聚焦，新 URL 不会覆写既有 path。
+   */
+  urlTarget?: (url: URL) => boolean
   /**
    * 声明式设置（v0.4.1+）：每个注册的 tab 都会在 Side card 设置页获得一行
-   * 开关（图标 + 标题 + 类型 id），`settings.toggles` 在其行下追加嵌套开关，
-   * 绑定 SidebarPrefs 字段。嵌套开关仅父级启用时显示。
+   * 开关（图标 + 标题 + 类型 id），`settings.toggles` 在其行下追加嵌套设置行，
+   * 绑定 SidebarPrefs 字段。嵌套设置仅父级启用时显示（v0.11.0 起行控件不限于
+   * 布尔开关：`type: 'switch' | 'text' | 'number' | 'select'`，缺省 'switch'；
+   * text/number 行 blur/Enter 提交，number 行按 min/max 钳制，unit 渲染单位后缀；
+   * select 行是下拉选择：options 声明 `{ value, title, desc?, icon? }`，任一
+   * 选项带 icon 时下拉渲染大图标选项卡、收起态同样显示图标，否则单行文本；
+   * `multi: true`（缺省 false）多选，存储值为选中 value 的数组，按 options
+   * 顺序提交）。
+   * v0.12.0 起增加两个插件自有扩展（详见 §5 声明式设置）：
+   * `pluginToggles`（插件自有 key，持久化在 pluginSettings[id]，无需宿主 schema 字段）
+   * 与 `render`（自定义设置面板，替代行列表）。
    */
   settings?: {
     toggles?: readonly {
-      /** SidebarPrefs 字段名（内置键：'autoOpenSubagent' / 'agentTerminalTools' / 'htmlViewerNoSandbox' / 'htmlViewerDefaultUnsafe' / 'browserNoSandbox' / 'browserInterceptLinks'） */
+      /** SidebarPrefs 字段名（内置键：'autoOpenSubagent' / 'agentTerminalTools' / 'terminalFontFamily' / 'editorExplorer' / 'htmlViewerNoSandbox' / 'htmlViewerDefaultUnsafe' / 'browserNoSandbox' / 'browserInterceptLinks' / 'browserInterceptHttp' / 'browserInterceptHttps'） */
       key: string
       title: string | (() => string)
       desc?: string | (() => string)
+      /** 行控件类型；缺省 'switch'（向后兼容）。 */
+      type?: 'switch' | 'text' | 'number' | 'select'
+      /** number 行的提交钳制下限。 */
+      min?: number
+      /** number 行的提交钳制上限。 */
+      max?: number
+      /** text 行的输入占位符。 */
+      placeholder?: string
+      /** 输入框后的单位后缀（如 'px'）。 */
+      unit?: string
+      /** select 行的选项（value 为提交值：string | number | boolean）。 */
+      options?: readonly {
+        value: string | number | boolean
+        title: string | (() => string)
+        desc?: string | (() => string)
+        icon?: ReactNode | ((size: number) => ReactNode)
+      }[]
+      /** select 行是否多选（缺省 false；存储值为 value 数组）。 */
+      multi?: boolean
     }[]
+    /** 插件自有设置行（v0.12.0+）：形状同 toggles，但 key 是插件局部的，
+     *  持久化在 `pluginSettings[<descriptor id>]`——不需要宿主 PrefsSchema 字段。 */
+    pluginToggles?: readonly {
+      key: string
+      title: string | (() => string)
+      desc?: string | (() => string)
+      type?: 'switch' | 'text' | 'number' | 'select'
+      min?: number
+      max?: number
+      placeholder?: string
+      unit?: string
+      options?: readonly {
+        value: string | number | boolean
+        title: string | (() => string)
+        desc?: string | (() => string)
+        icon?: ReactNode | ((size: number) => ReactNode)
+      }[]
+      multi?: boolean
+    }[]
+    /** 自定义设置面板（v0.12.0+）：给出时齿轮弹窗渲染它而非行列表。
+     *  props 含 store/service/prefs、本 descriptor 的 pluginSettings blob、
+     *  updatePluginSetting(key, value) 与 close()。抛错会被吞掉并显示内联错误。 */
+    render?: (props: {
+      store: SidebarStore
+      service: BetterSidebarService
+      prefs: SidebarPrefs
+      pluginSettings: Record<string, unknown>
+      updatePluginSetting: (key: string, value: unknown) => void
+      close: () => void
+    }) => ReactNode
   }
+  /**
+   * tab 角标（v0.12.0+）：tab 图标旁的小圆角 pill。number 渲染计数（99+ 封顶），
+   * string 原样文本，null/undefined 不显示。每次 tab 栏渲染都会调用——保持廉价；
+   * 抛错会被吞掉（不显示角标，不影响渲染）。
+   */
+  badge?: (ctx: Context, scope: SessionScope, state: SidebarState) => string | number | null | undefined
+  /**
+   * 生命周期回调（v0.12.0+），只由 SERVICE 路径触发：
+   * - onOpen：openTab 真正**新建** tab 后（dedupe/id 安全网聚焦**不算**打开）；
+   * - onActivate：tab 被聚焦时（dedupe 聚焦、id 安全网聚焦、tab 栏点击激活）；
+   * - onClose：closeTab 关闭 tab 后。
+   * 内置专属流程（diff 拆分放置、agent 终端 reconcile）直接改 state，不触发回调——
+   * 但它们只作用于内置类型（diff/terminal），外部插件的 tab 永远走 service 路径。
+   * 回调抛错只 console.error，绝不打断打开/关闭流程。openTab 的回调 scope
+   * 携带调用者传入的 { sessionId, cwd? }（+ 菜单路径带 cwd；无 scope 的自动
+   * 打开路径只有 sessionId）；closeTab/activateTab 的回调 scope 只在显式传入
+   * scope 参数时带 cwd。
+   */
+  onOpen?: (tab: SidebarTab, scope: SessionScope) => void
+  onActivate?: (tab: SidebarTab, scope: SessionScope) => void
+  onClose?: (tab: SidebarTab, scope: SessionScope) => void
   /** 渲染函数 */
   component: (props: TabComponentProps) => ReactNode
 }
@@ -145,7 +271,7 @@ interface TabComponentProps {
   tab: SidebarTab              // 当前 tab 实例（含 id/type/title/path?/diff?）
   visible: boolean             // 是否是当前激活 tab 且面板打开（不可见时暂停轮询等）
   // 以下由内置 tab 使用，外部 tab 可忽略：
-  expanded?: string[]          // explorer 的展开目录集
+  expanded?: string[]          // 文件树的展开目录集
   onToggleDir?: (path: string) => void
   onReferenceFile?: (path: string) => void
   onOpenFile?: (path: string) => void
@@ -194,21 +320,40 @@ ctx.effect(() =>
     title: 'Commits',
     icon: <CommitIcon />,
     order: 70,
-    available: (state) => hasGitRepo(state),  // 返回 false 时 + 菜单显示为 disabled
+    available: (ctx, scope, state) => hasGitRepo(state),  // 三参 (ctx, scope, state)；返回 false 时 + 菜单显示为 disabled
+    // 注意：available 只影响 + 菜单的 disabled 状态，不会拒绝 openTab（只有设置页的禁用开关会）。
     dedupeKey: () => 'my-plugin:commits',
     component: ({ scope }) => <CommitsView sessionId={scope.sessionId} />,
   })
 )
 ```
 
+**认领外链点击**（v0.13.0+，`features.includes('urlTarget')` gate）：聊天/界面里被拦截的 HTTP(S) 外链（协议开关开启时）路由到第一个 `urlTarget` 命中的 tab 类型，URL 作为 seed 预填 `tab.path`；内置浏览器是隐式兜底。多 URL 并存需用 `createTab` 铸造 per-URL id（browser 同款模式），否则同类型二次点击聚焦既有 tab、不覆写 path：
+```ts
+ctx.effect(() => {
+  if (!ctx.betterSidebar.features.includes('urlTarget')) return
+  return ctx.betterSidebar.registerTab({
+    id: 'my-plugin:web-docs',
+    title: () => 'Docs',
+    order: 80,
+    urlTarget: (url) => url.hostname === 'docs.my-site.com',  // 只有该域名被点击时认领
+    createTab: (state) => ({
+      tab: { id: `my-plugin:web-docs:${state.nextBrowser}`, type: 'my-plugin:web-docs', title: 'Docs' },
+      patch: { nextBrowser: state.nextBrowser + 1 },
+    }),
+    component: ({ tab, scope }) => <WebDocsView url={tab.path} sessionId={scope.sessionId} />,
+  })
+})
+```
+
 ### 3.4 内置 tab（不可重复注册）
 
 | id | order | single | hidden | 用途 |
 |---|---|---|---|---|
-| `editor` | -1 | 否（按 path 去重） | 是 | 文件编辑/预览（由 openSidebarFile 触发） |
-| `explorer` | 10 | 是 | 否 | 文件资源管理器 |
+| `editor` | 10 | 否（按 path 去重） | 否 | 唯一的「文件窗口」（文件编辑/预览 + 文件资源管理）：文件 tab（有 path）在两种 `editorExplorer` 模式下 chrome 恒为合并形态——头部路径输入框 + 文本编辑器预览/编辑/保存控件 + 可开关的内嵌文件树面板（含全局文件名搜索，走 host `fs.search` 路由；左缘拖拽调宽），状态存 `tab.meta.treeOpen` / `tab.meta.treeWidth`；pref 控制**打开行为与无路径窗口形态**：关（默认，独立）= 走 `openSidebarFile` 按 path 新开，**无路径窗口即独立资源管理器——只渲染文件树面板**（搜索 + FileTree 撑满全窗，无编辑器 chrome）；开（合并）= 树点击/输入框 Enter 原地切换当前 tab（`updateTab` 重写 path/title，id 与 meta 不变），无路径窗口 = 带 chrome 的空文件窗口（树默认展开）。树右键菜单提供「在新 Tab 中打开」「在侧边打开」（后者在当前 pane 右侧 split 出新 editor tab）。新会话在两种模式下都默认 seed 空文件窗口（`title: 'Files'`，无 path，树面板展开）；持久化的旧 `explorer` tab 经 `sanitizeState` 迁移为该 home tab |
 | `git` | 20 | 是 | 否 | Git 面板 |
 | `subagent` | 30 | 是 | 否 | 子代理拓扑 |
+| `sidechat` | 35 | 否（createTab 铸造 `sidechat:<uuid>`/按 `meta.threadId` 去重） | 否 | 侧边对话（Codex 风格，**每个对话一个独立 Tab**）：打开 Tab 即自动创建空线程（composer 拥有首条消息，host 侧包裹边界提示 + 创建时停泊的进行中快照，首条消息赢得真实标签并同步 Tab 标题）；线程 = 插件自建子会话（自定义种子继承父会话完整上下文，进行中回合以 `interrupted` 冻结诚实闭合；种子尾部带合法 `subagent/descriptor`——否则 cold 线程在宿主 subagents.list 里是 corrupt 诊断行——SubagentView/subagent-detect 按 `Side: ` 前缀过滤保持拓扑零噪音），`origin:'subagent'` 隐藏于主列表；生命周期走自有 `/sidebar/api/sidechat.*` 路由（`ctx.agents.create/resume` + `agent.followup/cancel` + `sidechat.info` 读 Agent 身份/状态）；头部菜单可切换/重开既有线程（`parkSidechatReopen` + `sidechat:<threadId>` 确定性 id），关闭 Tab 释放 live agent（历史保留）；重开 Tab 经 `collectOwnEvents` 大页回源到种子边界（cold 读会展开 chunk 压缩行，小窗口会丢早期 tool/call 行）；「保存为新会话」= `session.fork` 提升顶层会话（必须方法调用形态，`this` 敏感）。UI 对齐主对话区（用户气泡 `--dsw-specific-bubble`、assistant 通栏 markdown、胶囊 composer + 圆形发送/停止钮、运行扫光状态行）。见 [设计文档](docs/plans/2026-08-20-sidechat-tab-design.md) |
 | `terminal` | 40 | 否 | 否 | 终端（nextTerminal 自增） |
 | `browser` | 50 | 否（createTab 铸造 browser:`<n>`，nextBrowser 自增） | 否 | 内嵌网页浏览器（沙箱 iframe；可设置关闭沙箱） |
 | `diff` | -1 | 否（按 id 去重） | 是 | 差异查看（由 GitView 触发） |
@@ -237,8 +382,9 @@ interface FileViewerDescriptor {
   fetchStrategy: 'none' | 'fsRead' | 'mediaUrl' | 'custom' | 'binary-download'
   /** 内容嗅探（覆盖 exts）：head 字节可用时，第一个 detect 返回 true 的 viewer 命中 */
   detect?: (path: string, head: Uint8Array) => boolean
-  /** fetchStrategy='custom' 时的加载函数 */
-  load?: (path: string, scope: SessionScope) => Promise<unknown>
+  /** fetchStrategy='custom' 时的加载函数；v0.12.0+ 第三参 signal 在 viewer
+   *  卸载/重匹配时中止（忽略 signal 的 load 也照常工作） */
+  load?: (path: string, scope: SessionScope, signal?: AbortSignal) => Promise<unknown>
   /** 声明式设置（v0.4.1+）：形状同 TabDescriptor.settings */
   settings?: { toggles?: readonly { key: string; title: string | (() => string); desc?: string | (() => string) }[] }
   /** 渲染函数 */
@@ -260,6 +406,11 @@ interface FileViewerProps {
   truncated?: boolean     // fetchStrategy='fsRead' 时
   mediaUrl?: string       // fetchStrategy='mediaUrl' 时
   customData?: unknown    // fetchStrategy='custom' 时（load() 的返回值）
+  // 以下三个为内置文本编辑器与 EditorHost 的内部协作字段（合并模式把
+  // 预览/编辑/保存工具栏上移到路径输入框行）；外部 viewer 忽略即可：
+  toolbar?: 'self' | 'host'
+  onToolbarState?: (state: EditorToolbarState) => void
+  onToolbarControls?: (controls: EditorToolbarControls | null) => void
 }
 ```
 
@@ -269,7 +420,7 @@ interface FileViewerProps {
 |---|---|---|---|
 | `none` | 不需要字节 | （无） | 自渲染（如纯 UI） |
 | `fsRead` | `/sidebar/api` 的 `fs.read` | `content`, `truncated` | 文本类（CSV/JSON/XML） |
-| `mediaUrl` | `/sidebar/file` 媒体路由 URL | `mediaUrl` | 图片/PDF/Office（viewer 自己 fetch 字节） |
+| `mediaUrl` | `/sidebar/file` 媒体路由 URL | `mediaUrl` | 图片/PDF（viewer 自己 fetch 字节） |
 | `custom` | viewer 的 `load()` 函数 | `customData` | 自定义协议（如远程拉取） |
 | `binary-download` | 不预览，显示下载按钮 | （无） | 无客户端渲染器的二进制格式 |
 
@@ -284,7 +435,7 @@ interface FileViewerProps {
 
 > **head 字节从哪来**：第一次匹配（纯扩展名）没有 head。`fsRead` 策略读取后若文件为二进制，host 的 `fs.read` 响应会带 `head` 字段（base64，前 4KB），编辑器会用它对 `detect` viewer **重匹配一次**——所以 detect 型 viewer 的实际触发场景是"扩展名匹配落空/二进制文件"。文本文件的 detect 嗅探不在内置流程内（用 `exts` 或 `custom` 策略替代）。
 
-> **内置 viewer**（不可重复注册，全部 9 个）：image(0) / pdf(0) / docx(0) / xlsx(0) / pptx(0) / markdown(0, fsRead) / html(0, fsRead, 沙箱 iframe 预览) / code(-100, catch-all, fsRead) / binary-download(-50, exts doc/xls/ppt + NUL detect)。
+> **内置 viewer**（不可重复注册，全部 6 个）：image(0) / pdf(0) / markdown(0, fsRead) / html(0, fsRead, 沙箱 iframe 预览) / code(-100, catch-all, fsRead) / binary-download(-50, exts doc/xls/ppt + NUL detect)。Office 三件套预览（.docx/.xlsx/.pptx）**不再内置**——已迁至推荐插件（设置页「添加插件」→ 文件预览弹窗里的 Office 预览插件），该插件以相同 id 经 `ctx.betterSidebar.registerFileViewer` 注册。
 > code 是兜底 viewer：任何其他 viewer 未认领的文件都会落到 code（CodeMirror 文本编辑）；二进制文件经 head 重匹配被 binary-download 的 NUL detect 认领（下载按钮）。外部 viewer 注册同扩展名 + 更高 priority 即可覆盖。
 
 ### 4.5 注册示例
@@ -361,19 +512,64 @@ interface BetterSidebarService {
    * 打开一个 tab（+ 菜单和外部触发都用它；走 descriptor.dedupeKey 去重）。
    * title 可选：给出时优先于 descriptor.title（editor 显示文件名）；
    * 有 createTab 的 descriptor（terminal）会忽略 title/path/id。
-   * url 可选：落地后把 tab 的 path 预填为 URL（侧边栏浏览器导航种子，
-   * 通常配合 hostname title；对 createTab 铸造的 tab 同样生效）。
+   * url 可选：把**新建** tab 的 path 预填为 URL（侧边栏浏览器导航种子，
+   * 通常配合 hostname title；对 createTab 铸造的 tab 同样生效）。聚焦既有
+   * tab 时 url 不会覆写其 path。
    * 被设置禁用的类型是 no-op（console.warn 提示）。
+   * scope（v0.12.0+）定向到指定 session：给出且非当前 session 时，打开落在
+   * 该 session 的侧边栏状态里（没有则按 prefs 新建），不切换 UI 的激活 session；
+   * 定向打开**不自动展开**目标 session 的面板（用户看不见，展开无意义）；
+   * 缺省或指向当前 session 时行为与之前完全一致。注意：available 不拦截 openTab。
+   * 内容型打开（带 path/url seed）必须落在视野内：承载落点 pane 的面板
+   * 折叠时自动展开（右侧面板；落点 pane 在底部树则展开底部面板；窄视口
+   * 展开合并抽屉）；类型型打开（+ 菜单、agent 终端自动补 tab）不展开。
    */
-  openTab(seed: { type: string; title?: string; path?: string; diff?: SidebarTab['diff']; id?: string; url?: string }): void
-  /** 关闭一个 tab */
-  closeTab(tabId: string): void
+  openTab(seed: OpenTabSeed, scope?: SessionScope): void
+  /** 关闭一个 tab（未知 id 严格 no-op，无状态搅动）；scope（v0.12.0+）
+   *  随回调传递（含可选 cwd），缺省为 { sessionId: 当前 } */
+  closeTab(tabId: string, scope?: SessionScope): void
   /** 订阅注册表变化（register/dispose 时触发） */
   subscribe(listener: () => void): () => void
+  // ── v0.12.0+ ──────────────────────────────────────────────────────────
+  /** 插件版本（如 '0.12.0'；与 package.json 同步，测试守护） */
+  readonly version: string
+  /** 单调能力清单（只增不删）：'badge' | 'tabLifecycle' | 'updateTab' |
+   *  'openFile' | 'targetedOpen' | 'stateSubscription' | 'tabMeta' |
+   *  'pluginSettings' | 'urlTarget' | 'settingSelect'——消费插件用 `features.includes('xxx')` 按能力 gate。 */
+  readonly features: readonly string[]
+  /** 当前快照：激活 sessionId + 其状态（面板几何/打开的 tabs/展开集）+ prefs。
+   *  session 未激活时 state/sessionId 为 undefined。 */
+  getSnapshot(): SidebarSnapshot
+  /** 订阅快照变化（会话切换/状态变更/prefs 写入）；返回 disposer */
+  subscribeState(listener: () => void): () => void
+  /** 更新一个已打开 tab 的显示字段（title/path/meta）；tab 不存在时 no-op */
+  updateTab(tabId: string, patch: { title?: string; path?: string; meta?: unknown }): void
+  /** 激活一个已打开的 tab（tab 栏点击路径；触发 descriptor.onActivate；
+   *  未知 id 严格 no-op）；scope（v0.12.0+）随回调传递，同 closeTab */
+  activateTab(tabId: string, scope?: SessionScope): void
+  /** 在 scope.sessionId 的侧边栏编辑器打开一个文件（title 缺省为文件名；
+   *  id 按路径派生（`editor:` + path），与内置 open-path 拦截一致，不同文件
+   *  可并排打开。注意：path 派生 id 只对 openFile/openSidebarFile 的打开成立——
+   *  文件窗口的原地切换（editorExplorer 开）经 updateTab 重写 path/title，
+   *  tab id 保持稳定、不再与 path 对应） */
+  openFile(scope: SessionScope, path: string, title?: string): void
+}
+
+/** openTab 的 seed（v0.12.0 起导出命名类型） */
+interface OpenTabSeed {
+  type: string
+  title?: string
+  path?: string
+  diff?: SidebarTab['diff']
+  id?: string
+  url?: string
+  /** JSON 可序列化的自定义状态，随 tab 持久化（刷新后原样恢复）；
+   *  updateTab/seed 传 undefined 表示「不改」，传 null 可显式清除 */
+  meta?: unknown
 }
 ```
 
-> **声明式设置（v0.4.1+）**：每个注册的 tab/viewer 自动出现在 DSH 设置页「侧边卡片」分区的清单里——响应式网格中的**小卡片**（图标 + 标题 + 类型 id + **高亮 = 启用**，勾选徽标钉在卡片最右端，viewer 卡片还显示扩展名），开关持久化到 `SidebarPrefs.tabsEnabled / viewersEnabled`（开放 map，缺省 = 启用）。关闭语义：tab 从 `+` 菜单消失、`openTab` 拒绝新开、子代理自动展开 / agent 终端自动补 tab 等派生流程停止，**已打开的 tab 保留**；viewer 被 `matchFileViewer` 跳过，文件落到下一个匹配。`settings.toggles` 声明的相关设置（如子代理的 `autoOpenSubagent`）通过卡片右下角的齿轮按钮在**原生弹窗**中编辑（复选框行），父级卡片关闭时齿轮隐藏；**key 必须是宿主 PrefsSchema 的字段**（内置键：`autoOpenSubagent` / `agentTerminalTools` / `htmlViewerNoSandbox` / `htmlViewerDefaultUnsafe` / `browserNoSandbox` / `browserInterceptLinks`），外部插件的自定义键会被 settings seam 丢弃。
+> **声明式设置（v0.4.1+）**：每个注册的 tab/viewer 自动出现在 DSH 设置页「侧边卡片」分区的清单里——响应式网格中的**小卡片**（图标 + 标题 + 类型 id + **高亮 = 启用**，启用卡片最右端渲染紧凑品牌开关滑块，viewer 卡片还显示扩展名），开关持久化到 `SidebarPrefs.tabsEnabled / viewersEnabled`（开放 map，缺省 = 启用）。关闭语义：tab 从 `+` 菜单消失、`openTab` 拒绝新开、子代理自动展开 / agent 终端自动补 tab 等派生流程停止，**已打开的 tab 保留**；viewer 被 `matchFileViewer` 跳过，文件落到下一个匹配。`settings.toggles` 声明的相关设置（如子代理的 `autoOpenSubagent`、终端的 `terminalFontFamily`/`terminalFontSize`）通过卡片底部的「功能设置」设置条（齿轮图标 + 文字标签，hairline 分隔）在**原生弹窗**中编辑——`type: 'switch'` 行是复选框，`type: 'text'`/`'number'` 行是输入框（v0.11.0+），`type: 'select'` 行是下拉选择（options 带 icon 时为大图标选项卡，`multi: true` 多选存 value 数组）——父级卡片关闭时设置条隐藏；`settings.toggles` 的 **key 必须是宿主 PrefsSchema 的字段**（内置键：`autoOpenSubagent` / `agentTerminalTools` / `terminalFontFamily` / `terminalFontSize` / `editorExplorer` / `htmlViewerNoSandbox` / `htmlViewerDefaultUnsafe` / `browserNoSandbox` / `browserInterceptLinks` / `browserInterceptHttp` / `browserInterceptHttps`）。**v0.12.0 起设置 seam 已开放**：外部插件用 `settings.pluginToggles`（同款行控件，key 插件局部）或 `settings.render`（自定义面板）声明自己的设置，值持久化在 prefs 文档的 `pluginSettings[<descriptor id>]`（开放 map，宿主 schema 已有字段，无需注册）——设置弹窗对 tab 与 viewer 都可用（viewer 卡片 v0.12.0 起也有设置条）。
 
 ---
 
@@ -396,10 +592,40 @@ interface BetterSidebarService {
 | **host 半无此服务** | `ctx.betterSidebar` 只在 client 侧存在；host 半需要 better-sidebar 数据走 `/sidebar/api/*` HTTP 路由 |
 | **portal 限制** | 整面板 slot 由 ui-layout 独占，外部 tab 只能进入 better-sidebar 的 portal 内部，无法全屏替换 |
 | **id 冲突** | `registerTab` / `registerFileViewer` 对重复 id 抛错；建议用包前缀（`my-plugin:xxx`） |
+| **家族右面板互斥（v0.13.0+）** | 读取 `aionui-panel` 设置命名空间的 `rightPanel`：解析为 `'aionui-panel'` 时整个侧边栏不挂载（`settings.get` 路由返回 `externalDisable: true`，客户端挂载门 + 各类接管一并停用；`settings/document-updated` 推送实时生效，无 `remote` 服务的部署回退为启动时判定）。未安装 aionui 或提供方为其他值时不受影响 |
+| **i18n 跟随** | 侧边栏界面文案跟随 DSH 的 `ctx.locale`（`@deepseek-ai/dsh-client-locale`）：词典注册在 `betterSidebar` 命名空间，语言偏好（Host-backed `locale.preference`）与浏览器语言不一致时以 DSH 为准并实时切换；locale 服务缺失时回退浏览器语言。插件自身的 `t()`（`src/client/locales.ts`）由 `apply()` 挂接服务；消费插件**不要**依赖此内部函数——标题等字段传字符串或 `() => string` 即可（i18n 友好）。⚠️ 渲染 DSH 的 `MarkdownText` 时必须传 `codeLabels={{ copyLabel: t('copy'), copiedLabel: t('copied') }}`——该组件 cordis-free，漏传则代码块复制按钮回退硬编码中文 |
+| **懒加载 chunk** | 内置重依赖（xterm/CodeMirror）在独立 bundle（`lib/client-<name>.js`）中，经 `/sidebar/bundle` 路由按需下发；每个脚本把 factory 赋到插件自有全局注册表 `globalThis.__dshChunks__[<name>]`，由 `src/client/chunk-loader.ts` 用自定义 require（externals 经 `__DSH_MODULES__` seed 分支解析）物化——**不经过** `__ModuleLoader__` 注册；**核心 bundle 禁止静态 import `src/client/chunks/*`**（会把库拖回启动路径）；对消费插件透明——懒加载只作用于内置 descriptor，`component` 契约（`(props) => ReactNode` 纯渲染函数）不变 |
 
 ---
 
-## 8. 完整最小示例
+## 8. 皮肤兼容（令牌驱动）
+
+> 侧边栏的皮肤兼容是**令牌驱动**的：所有视觉值都消费 DSH 的 `--dsw-alias-*` / `--dsw-font-*` / `--ds-*` 令牌（无硬编码颜色），皮肤系统覆盖什么令牌我们就跟随什么——**不做任何每皮肤适配**。当前已与 dsh-web-ui 皮肤中心兼容：其 10 款皮肤全部覆盖 `--dsw-alias-*` 层，换肤后面板自动跟随（测试：`tests/e2e/mount.e2e.ts` 断言布局变量随面板挂载生效；`tests/theme.spec.ts` 守护令牌读取）。
+
+### 8.1 规则
+
+- **面板表面**：右/底面板背景 = `var(--dsw-alias-bg-layer-1)`（通用卡片表面）。**绝不消费 `--dsw-specific-sidebar-fill`**——那是宿主左侧导航列专属令牌，皮肤系统按左导航语义覆盖它（dsh-web-ui 皮肤把它做成半透明玻璃或主题色，Aqua 设成 `transparent`），面板消费它会失去填充或与标签令牌冲突。皮肤要整体换面板表面：覆写 `--dsw-alias-bg-layer-1` 即可（dsh-web-ui 10 款皮肤都已覆盖，无需任何额外工作）。
+- **终端/编辑器表面**：经 `effectiveTokenValue` 读取 `--dsw-alias-bg-base`——`transparent` 与 alpha < 0.9 的半透明玻璃值（dsh-web-ui 皮肤用 rgba 0.16–0.7）一律回退不透明底色，文字永不叠在皮肤背景画上滚动（issue #90）；≥ 0.9 的近不透明值（如皮肤作用域内 0.96 的瓷器玻璃）放行，皮肤仍能控制终端表面。
+- **根锚点**：宿主 div 带 `data-dsh-better-sidebar` 属性（append 到 `document.body`）。其内是**统一面板宿主层** `[data-dsh-panel-host]`（`position:fixed; inset:0; z-index:40; pointer-events:none`，v0.13.1+）：面板/开关簇在其内 **absolute** 定位（层 inset:0 即视口坐标），免疫桌面套壳中间层 transform 对 fixed 含块的劫持；页面级 transform（罕见）触发 `data-dsh-panel-host-degraded` 降级同步。皮肤若要做作用域覆盖（deep-whale 的做法），限定在 `[data-dsh-better-sidebar]` 内即可，避免全局改写影响宿主。
+- **布局变量**（写在 `<html>` 上，面板打开时有效）：`--dsh-sidebar-width` / `--dsh-sidebar-height`（面板几何；拖拽期间逐帧更新）。宿主推挤 = `#root` 的 `margin-right/width: calc(100% - var)`（v0.13.1+ 防桌面壳加性溢出）与 centerCol 的 `margin-bottom`；推挤锚点是**复合选择器**（同一元素双保险，禁止退回 `nth-child` 位置锚定）：`#root [data-dsh-frame] > [data-pane="conversation"]` **与** `#root :has(> [data-slot="conversation"])`（0.1.x 命名 / rc.8 时代命名，live 页面实测同元素；`drag-layout.e2e.ts` 断言两者同元素）。
+- **桌面信号与标题栏兼容**（v0.14.1+ 四选项模型，取代旧"win32 advanced 自动 32px"硬编码）：
+  - 壳信号（只读报告，不自动触发任何修改）：URL `dsh-desktop-mode` / `dsh-desktop-platform`（DSH Desktop 壳注入；preload 另暴露 `__DSH_DESKTOP_FILE_PATH__`）；可选契约参数 `dsh-desktop-titlebar-inset`（壳声明自己预留的顶栏像素，0–120，clamp；`parseDesktopEnv().titlebarInset`）。
+  - **strip 取值链**（`src/client/titlebar-strip.ts` 唯一决策点，纯函数）：⓪ `web` 方案强制 0（显式 DSH官方Web，连 WCO 也不适用）；① `navigator.windowControlsOverlay` 标准 API 真实几何（`src/client/wco.ts`，反应式订阅 `geometrychange`，最大化/还原实时更新——**即使为 0 也权威**，`visible=false` 的幽灵 API 视为缺失，覆盖 #257 的 32/36px 差异）；② URL `dsh-desktop-titlebar-inset`；③ 壳预设 `stripFor`（仅 `preset` 方案）；④ 手动 `titleBarStripPx`（仅 `custom` 方案）；⑤ 0（网页零修改）。结果驱动 `body[data-dsh-title-bar-compat]` + `--dsh-title-bar-strip`（语义与旧布尔一致）。
+  - **四选项设置**（`SidebarPrefs.titleBarScheme`，设置页主行**下拉**：`auto` 默认 / `web` / `preset` / `custom`）：`auto` = 只信标准信号（WCO），壳 stamp 不触发任何修改——**"为某壳做的兼容在另一个壳会再坏"，核心不做壳专属分支**；`web` = 显式「DSH官方Web」，任何情况强制 0；`preset` = 数据驱动的内置壳预设（`src/client/shell-presets.ts`，准入规则：issue/PR 中被提及且 GitHub ⭐>100；v1 仅 anywhere-labs DSH Desktop：darwin advanced 20px、win32 无 WCO 时 32px 兜底；下拉选项命中环境时带「已检测」后缀，仅提示、绝不自动启用）；`custom` = 用户自定义 CSS + 手动 strip px（下拉选中后出现齿轮按钮，弹窗含下移距离与 CSS 输入）。
+  - **旧文档迁移**：schema 中 `titleBarScheme` 无默认值（缺失才可迁移）；旧文档**已有值**（`titleBarCompat === true` 或 `titleBarStripPx` 非默认 40）→ 迁移到 `custom` 方案保留用户数值；干净文档 → `auto`。
+  - **用户空间 CSS**：预设 css（`<style data-dsh-preset-css>`）与自定义 css（`<style data-dsh-custom-css>`）经 `Sidebar.tsx` effect 注入到 `document.head` 末尾（后写胜出；覆盖 JS 内联变量需 `!important`），fiber 卸载/变更即移除。稳定寻址面（皮肤/预设/自定义 CSS 共用）：`[data-dsh-toggle-cluster]`、`[data-dsh-panel]`（右面板）、`[data-dsh-bottom-panel]`（底面板）。
+  - **拖拽区退出**：插件交互 chrome（`.toggleCluster` / `.toggleButton` / `.tabBar`）统一 `-webkit-app-region: no-drag`——无边框壳的顶部拖拽带会吞点击（#103/#111），该属性在普通浏览器与无拖拽区壳中惰性无害。
+  - `compatibility` 模式与无信号环境不避让。
+- **z-index**：面板宿主层 40、折叠按钮簇 45（角手柄在面板内层叠，z-index 2 仅面板内有效）——全部低于 DSH 浮层栈（100/1000+），任何浮层天然盖住侧边栏。
+
+### 8.2 注意事项
+
+- 类名是 CSS Modules 哈希（`[hash]_[local]`），**不是契约**——皮肤不要依赖类名寻址；需要精确命中单表面时，用 `[data-dsh-better-sidebar]` 属性选择器配合子串类名（如 `[class*='panel']`）或 DOM 结构。
+- 改动本契约（面板表面令牌、透明度阈值、z-index 层级）必须同步更新本文档、设计文档与 `tests/theme.spec.ts`。
+
+---
+
+## 9. 完整最小示例
 
 > 假设插件 `my-plugin` 要加一个"Database 浏览器" tab + `.csv` 文件预览器。
 
@@ -414,7 +640,7 @@ interface BetterSidebarService {
     "./client": { "types": "./lib/types/client/index.d.ts", "default": "./lib/client.js" }
   },
   "peerDependencies": {
-    "cordis": "^4.0.0-rc.7",
+    "cordis": "^4.0.0-rc.8",
     "dsh-better-sidebar": "workspace:*",
     "@deepseek-ai/dsh-client-runtime": "^0.0.1",
     "react": "^18.2.0"
@@ -471,19 +697,21 @@ function CsvGrid(props: { rows: string[][]; path: string }): React.ReactNode { /
 function parseCsv(text: string): string[][] { /* ... */ }
 ```
 
-**注册到 profile**：在 `~/.dsh/profiles/web/package.json` 的 `dependencies` 加 `"my-plugin": "link:<你的插件路径>"`，在 `cordis.patch.yml` 加挂载行，`pnpm install`，重启 `dsh web` + 浏览器硬刷新。
+**注册到 profile**：在 `~/.dsh/profiles/web/package.json` 的 `dependencies` 加 `"my-plugin": "link:<你的插件路径>"`，在 `cordis.patch.yml` 加挂载行，`pnpm install`，浏览器硬刷新即可（DSH 对 client 改动热加载，无需重启 `dsh web`；仅 host 半改动需要重启）。
 
 ---
 
-## 9. 参考实现
+## 10. 参考实现
 
 better-sidebar 自己的内置 tab 和 viewer 就是参考实现（"吃狗粮"）：
 
-- **`src/client/builtins/`**：7 个内置 tab（explorer/git/subagent/terminal/browser/editor/diff）+ 9 个内置 viewer（image/pdf/docx/xlsx/pptx/markdown/html/code/binary-download）的注册代码（tabs.tsx / viewers.tsx / index.ts）
+- **`src/client/builtins/`**：6 个内置 tab（editor/git/subagent/terminal/browser/diff）+ 6 个内置 viewer（image/pdf/markdown/html/code/binary-download）的注册代码（tabs.tsx / viewers.tsx / index.ts；Office 预览已迁至推荐插件，见 plugins-viewers.ts）
 - **`src/client/service.ts`**：`BetterSidebarService` 接口 + `createBetterSidebarService` 工厂实现
-- **`src/client/SideCardSection.tsx`**：声明式设置页（注册表驱动清单 + `settings.toggles` 嵌套开关 + 开关持久化）
+- **`src/client/SideCardSection.tsx`**：声明式设置页（注册表驱动清单 + `settings.toggles` 嵌套设置行：switch/text/number + 持久化）
 - **`tests/service.spec.ts`**：注册表生命周期 / 匹配算法 / dedupe / createTab / 启用态 gating 测试
-- **`tests/builtins.spec.ts`**：内置注册清单断言（7 tab + 9 viewer + 声明式元数据）
-- **`docs/plans/2026-08-11-service-registry-design.md`** / **`docs/plans/2026-08-11-declarative-sidebar-settings-design.md`**：设计文档（含实施偏差记录）
+- **`tests/builtins.spec.ts`**：内置注册清单断言（7 tab + 6 viewer + 声明式元数据）
+- **`src/client/plugins-tabs.ts`** / **`src/client/plugins-viewers.ts`**：推荐插件目录（名字/url/简介/安装脚本，分别对应 Tab 注册与文件预览注册），在设置页两个「添加插件」弹窗展示（共享类型在 `plugins-shared.ts`）；插件作者可按扩展点加一条数据（弹窗内「跳转」直达仓库、「复制」把安装命令写入剪贴板，粘贴到 DSH 所在环境的终端执行）——数据完整性由 `tests/plugin-list.spec.ts` 守护
+- **`src/client/FileTree.tsx`** / **`src/client/TreePanel.tsx`** / **`src/fs-search.ts`**：受控文件树组件（纯树体，文件行右键菜单含「在新 Tab 中打开」「在侧边打开」，仅宿主编排提供回调时渲染）/ 树面板（搜索框 + 刷新 + FileTree，文件窗口的内嵌 dock 使用）与 host 侧递归文件名搜索（`fs.search` 路由，预算兜底 + 跳过 `.git`/symlink 目录；测试 `tests/fs-search.spec.ts`、组件测试 `tests/editor-host.spec.tsx`）
+- **`docs/plans/2026-08-11-service-registry-design.md`** / **`docs/plans/2026-08-11-declarative-sidebar-settings-design.md`** / **`docs/plans/2026-08-14-add-plugins-modal-design.md`**：设计文档（含实施偏差记录）
 
 调试时直接读这些文件即可看到所有 API 的真实用法。

README.md

@@ -1,22 +1,410 @@
 # dsh-better-sidebar
 
-> DeepSeek Harness Web GUI 的 **VSCode 风格侧边栏**插件：文件管理、编辑预览、内嵌浏览器、真实终端、Git 面板、Subagent 页面——**右侧栏 + 底部面板双工作台**，一个插件全部搞定。
+<!-- Hero -->
+<div align="center">
+  <b style="font-size: 1.15em;">一个服务化的侧边栏框架，一套开箱即用的完整工作台</b><br /><br />
+  <a href="https://www.npmjs.com/package/dsh-better-sidebar"><img alt="npm version" src="https://img.shields.io/npm/v/dsh-better-sidebar" /></a>
+  <a href="https://www.npmjs.com/package/dsh-better-sidebar"><img alt="npm downloads" src="https://img.shields.io/npm/dm/dsh-better-sidebar" /></a>
+  <a href="https://github.com/omdsh-dev/DSH-better-sidebar/actions/workflows/ci.yml"><img alt="CI" src="https://github.com/omdsh-dev/DSH-better-sidebar/actions/workflows/ci.yml/badge.svg" /></a>
+  <a href="https://github.com/omdsh-dev/DSH-better-sidebar/stargazers"><img alt="GitHub stars" src="https://img.shields.io/github/stars/omdsh-dev/DSH-better-sidebar" /></a>
+  <a href="https://opensource.org/licenses/MIT"><img alt="License: MIT" src="https://img.shields.io/badge/License-MIT-yellow.svg" /></a>
+  <a href="https://dshfind.com/zh/plugins/omdsh-dev/DSH-better-sidebar?ref=badge"><img alt="dshfind" src="https://dshfind.com/api/badge/omdsh-dev/DSH-better-sidebar?lang=zh" /></a><br /><br />
+  <a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="支持的 DSH 版本：0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a>
+  <a href="https://github.com/topics/dsh-better-sidebar"><img alt="插件生态：GitHub topic dsh-better-sidebar" src="https://img.shields.io/badge/%E6%8F%92%E4%BB%B6%E7%94%9F%E6%80%81-topic%20dsh--better--sidebar-4d6bfe" /></a><br /><br />
+  <img alt="文件管理" src="https://img.shields.io/badge/-文件管理-4d6bfe" /> <img alt="编辑预览" src="https://img.shields.io/badge/-编辑预览-4d6bfe" /> <img alt="内嵌浏览器" src="https://img.shields.io/badge/-内嵌浏览器-4d6bfe" /> <img alt="真实终端" src="https://img.shields.io/badge/-真实终端-4d6bfe" /> <img alt="Git 面板" src="https://img.shields.io/badge/-Git%20面板-4d6bfe" /> <img alt="后台任务" src="https://img.shields.io/badge/-后台任务-4d6bfe" /> <img alt="侧边对话" src="https://img.shields.io/badge/-侧边对话-4d6bfe" /> <img alt="插件接入" src="https://img.shields.io/badge/-插件接入-4d6bfe" /><br /><br />
+  <b>右侧栏 + 底部面板双工作台</b>，并把 <code>ctx.betterSidebar</code> 服务开放给所有插件——<br />
+  通过 <code>registerTab</code> / <code>registerFileViewer</code> 注册新的侧边栏页面与文件预览器。
+</div>
 
-<img width="4632" height="2720" alt="image" src="https://github.com/user-attachments/assets/39d86636-7654-412f-86ea-c60a2d5f20f0" />
+<div align="center">
+  🌏 <a href="./README.md"><b>中文</b></a> · <a href="./README_EN.md">English</a>
+</div>
+
+<div align="center">
+  <img alt="dsh-better-sidebar 工作台截图" src="https://github.com/user-attachments/assets/dfdb875e-a1a8-4d4b-8340-353736b1708f" />
+  <video src="https://github.com/user-attachments/assets/23187822-047e-45cc-b480-fe997bd55b86" muted autoplay loop playsinline controls width="100%"></video>
+</div>
+
+## 📑 目录
+
+- [✨ 功能一览](#-功能一览)
+- [🚀 安装](#-安装)
+- [🖼️ 特性巡礼](#-特性巡礼)
+- [🌐 插件生态](#-插件生态)
+- [🆕 最近更新](#-最近更新)
+- [⌨️ 快捷键](#-快捷键)
+- [🔌 服务化扩展](#-服务化扩展)
+- [🛠️ 开发与构建](#-开发与构建)
+- [🔐 安全](#-安全) · [⚠️ 已知限制](#-已知限制) · [🖥️ 平台支持](#-平台支持)
+- [💬 社区](#-社区) · [🤝 参与贡献](#-参与贡献) · [⭐ Star History](#-star-history) · [🔗 友情链接](#-友情链接)
 
 ## ✨ 功能一览
 
-- **🗂️ 资源管理器**：懒加载目录树（根 = 会话 cwd）、点击在侧边栏打开、行尾 `@文件` 引用到输入框、右键复制路径
-- **📝 编辑与预览**：CodeMirror 6 多语言高亮 + Ctrl/Cmd+S 原子保存；图片 / Markdown（预览/编辑切换）/ HTML（沙箱 iframe 预览，相对资源可加载）/ PDF / Word / Excel / PPT 内联预览，切换 Tab 不丢草稿
-- **🌐 浏览器**：内嵌网页浏览 tab（多开），后退/前进/刷新 +「在浏览器中打开」；页面在**沙箱 iframe** 中运行（不透明源：无法访问界面数据与本地文件，拒绝 localhost 等本机地址），界面实时显示沙箱状态、可临时解锁（关闭时红色警示）；被站点拒绝嵌入（X-Frame-Options）时显示原因面板；聊天/界面里的 http(s) 外链默认在侧边栏打开
-- **💻 终端**：xterm.js + node-pty 真实 shell（每会话 3 个 UI 上限）、Tab 保活重连回放；可选为模型注入 8 个 `terminal_*` 工具
-- **🌿 Git 面板**：真 diff + VSCode 式 diff tab、懒加载历史、右键暂存/放弃/提交/还原/捡取
-- **🧩 Subagent 页面**：主会话完整 agent 拓扑、点击直达执行记录、实时工具调用轮询、新子代理自动展开
-- **🪟 底部面板**：独立的第二个工作台（与右侧栏同类的标签页），只挤占中间 Agent 输出区、不覆盖左右侧边栏；**首次展开自动开一个新终端**（终端卡片二级设置可关）；右上角 x 一键折叠
-- **🔧 分栏工作台**：拖 Tab 拆分/合并分栏（可**跨面板拖 Tab**）、分隔线调比例；右上角持久按钮簇（底栏 + 侧拉 glyph）折叠/展开两个面板；两面板共享拐角双向拖动调节尺寸，拖动 rAF 直写 DOM 保持流畅
-- **🔁 会话隔离**：布局/分栏/Tab/两面板状态按会话持久化（localStorage），陈旧状态自动净化；聊天「产出文件」改在侧边栏打开
-- **⚙️ 声明式设置**：设置页「侧边卡片」分区按注册表渲染功能清单（小卡片网格，高亮 = 启用），每项可独立开/关；二级设置（子代理自动展开、终端工具、底部面板首展自动开终端、沙箱开关等）经齿轮按钮在原生弹窗中编辑
-- **🔌 服务化**：暴露 `ctx.betterSidebar` 服务，其他插件可注册侧边栏 tab 与文件预览器（内置 7 tab + 9 viewer 也走同一服务，详见 [AGENTS.md](./AGENTS.md)）
+- **🗂️ 文件工作台**：资源管理器（懒加载目录树；软链接按目标类型展示——目录软链接可展开、失效链接标红）+ CodeMirror 编辑器；图片 / Markdown（含 Mermaid 图表，strict 安全渲染 + 点击放大）/ HTML / PDF
+- **🌐 内嵌浏览器**：多开网页 tab，后退 / 前进 / 刷新；内容运行在沙箱 iframe；外链默认按协议分流——HTTP 在侧边栏打开、HTTPS 走系统浏览器（设置页可分别调整）
+- **💻 真实终端**：xterm.js + node-pty 真实 shell，断线重连回放；可选为模型注入 `terminal_*` 工具
+- **🌿 Git 面板**：真 diff + VSCode 式 diff tab、历史、右键暂存 / 提交 / 还原
+- **🧩 后台任务页**：subagent 拓扑 + 后台任务（退出码 / 实时输出 / 强制终止）
+- **💬 侧边对话(beta)**：Codex 风格的侧边线程——继承主会话完整上下文（含进行中的回合与工具调用）独立运行，不进入主会话；线程内可持续追问，一键「保存为新会话」提升为顶层会话
+- **🪟 双工作台**：右侧栏 + 底部面板；拖 Tab 拆分 / 合并分栏（可跨面板），移动端自动合并全宽抽屉
+- **🔁 会话隔离**：布局 / Tab / 面板按会话持久化，陈旧状态自动净化
+- **⚙️ 声明式设置**：设置页「侧边卡片」逐项独立开关，二级设置经齿轮弹窗
+- **⚡ 按需加载**：启动只拉 ~325KB 核心，终端 / 编辑器 / Mermaid 图表等重依赖用到才按需拉取（[设计文档](docs/plans/2026-08-12-lazy-chunks-design.md)）
+- **🌏 多语言**：界面文案跟随 DSH 语言（zh / en）实时切换
+
+> 🔌 **核心理念**：服务优先——内置的 7 tab + 6 viewer 与第三方插件通过同一套 `ctx.betterSidebar` API 注册，能力完全对等；官方不再内置、可由生态提供的功能，交由生态插件实现（已有 **28+ 生态插件**，见下方「🌐 插件生态」）。接入文档见「🔌 服务化扩展」与 [外部插件接入指南](./docs/external-plugin-guide.md)。
+
+## 🚀 安装
+
+**前置**：已装好 DSH（`dsh web` 能正常运行），Node.js ≥ 20、pnpm ≥ 10。
+
+**支持的 DSH 版本**：
+<a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="支持的 DSH 版本：0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a>
+
+```sh
+dsh plugin --profile web add dsh-better-sidebar@latest   # 首次会因 pnpm 11 拦截 node-pty 构建脚本而失败（依赖已写入）
+cd ~/.dsh/profiles/web && pnpm approve-builds --all      # 放行构建脚本（自动重跑安装）
+dsh plugin --profile web add dsh-better-sidebar@latest   # 重跑即成功
+```
+
+装完**硬刷新浏览器**（Cmd/Ctrl+Shift+R）即可看到侧边栏（DSH 对 client 改动热加载，无需重启；仅 host 半更新时需要重启）。
+
+**方式二：让 DSH 自己装**——把下面这段提示词发给任意一个 DSH 会话：
+
+```text
+帮我安装 dsh-better-sidebar 插件（DSH 侧边栏工作台），步骤：
+1. 执行 dsh plugin --profile web add dsh-better-sidebar@latest（首次会被 pnpm 11 拦截 node-pty 构建脚本而失败，属正常）
+2. 在 ~/.dsh/profiles/web 下执行 pnpm approve-builds --all（放行构建脚本，会自动重跑安装）
+3. 再次执行 dsh plugin --profile web add dsh-better-sidebar@latest
+4. 完成后提醒我硬刷新浏览器（Cmd/Ctrl+Shift+R）
+遇到报错先查 https://github.com/omdsh-dev/DSH-better-sidebar README 的常见问题表。
+```
+
+<details>
+<summary><b>更新</b></summary>
+
+```sh
+dsh plugin --profile web add dsh-better-sidebar@latest
+```
+
+也可把 `~/.dsh/profiles/web/package.json` 里的版本号改高后 `pnpm install`。改完**硬刷新浏览器**（Cmd/Ctrl+Shift+R）即可（client 改动无需重启 DSH）。
+
+</details>
+
+<details>
+<summary><b>常见问题</b></summary>
+
+| 现象 | 原因与解决 |
+|---|---|
+| 报 `Ignored build scripts` | pnpm 11 拦截构建脚本。在 profile 目录（`~/.dsh/profiles/web`）跑 `pnpm approve-builds --all`。 |
+| 报 `minimum release age` / 版本不足 24h | 装的版本发布不足 24 小时。等 24h 或重跑一次（pnpm 会自动补 `minimumReleaseAgeExclude`）。 |
+| 报「找不到 profile 目录」 | 先跑一次 `dsh web`，让它初始化 `~/.dsh/profiles/web`。 |
+| 页面出现**两个侧边栏** | 双挂载。旧的手动挂载行：`~/.dsh/profiles/web/cordis.patch.yml` 还留着 `- insert: ... better-sidebar ...`，删掉那段（同 id 重复挂载 loader 会直接报 `duplicate loader entry id`）。聚合包（如 `@linxin666/dsh-web-ui-all`）以**不同 id** 挂载本包时，0.13.x 起插件自身 bundle patch 会自动退让（检测到已有启用中的同包名挂载就不挂自己），无需手动处理；若仍双挂载，先确认聚合包的 bundle 顺序在 `dsh-better-sidebar` 之前。 |
+| Windows 下终端无法使用 | `node-pty` 依赖预编译二进制；若当前 Node 版本没有对应产物，需装编译工具链（VS Build Tools）。主流 Node 版本一般已有预编译。 |
+| 终端提示「node-pty 加载失败」 | `node-pty` 安装缺失/损坏（如 pnpm 拦截了构建脚本）。终端横幅会给出修复命令：复制到 DSH 所在环境的终端/cmd 执行（在 `~/.dsh/profiles/web` 下 `pnpm approve-builds --all && pnpm rebuild node-pty`），完成后重启 DSH 并点重试。插件与 DSH 核心使用同一 `node-pty@^1.1.0`，修复后两者同步恢复。 |
+| 提示 `dsh: command not found` | 先安装 DSH；或直接用 `npx -y --package @deepseek-ai/dsh dsh plugin --profile web add dsh-better-sidebar@latest`。 |
+
+</details>
+
+<details>
+<summary><b>从源码安装 / 开发（可选，替代 npm 方式）</b></summary>
+
+调试本地改动或跟随开发分支时，把依赖指向本地克隆并自行构建：
+
+```text
+1. git clone https://github.com/omdsh-dev/DSH-better-sidebar.git ~/Code/DSH-better-sidebar
+   cd ~/Code/DSH-better-sidebar && pnpm install && pnpm build
+2. ~/.dsh/profiles/web/package.json 的 dependencies 写 "dsh-better-sidebar": "link:<克隆目录绝对路径>"
+3. ~/.dsh/profiles/web/cordis.patch.yml 追加挂载行（需要指定终端 shell 时，在行内加 `config.shell`；`config.shellArgs` 可带参启动，非空时替换默认的 `-l`。不填则自动解析 `$SHELL` / 登录 shell / powershell.exe）：
+   - insert:
+       - id: better-sidebar
+         name: 'dsh-better-sidebar'
+         config:
+           shell: /bin/zsh
+           shellArgs:
+             - --noprofile
+             - --no-rc
+4. 在 ~/.dsh/profiles/web 执行 pnpm install
+5. 硬刷新浏览器（Cmd/Ctrl+Shift+R）即可看到效果（client 改动无需重启 DSH；host 半改动才需重启）
+```
+
+更新：`git pull && pnpm install && pnpm build` → 硬刷新浏览器即可（client 改动热加载生效，无需重启 DSH；host 半改动才需重启）。切回 npm 通道时，把依赖改回 `"dsh-better-sidebar": "^0.15.0"` 再 `pnpm install`。
+
+</details>
+
+<details>
+<summary><b>通过 plugin-registry 安装（可选，与上述二选一）</b></summary>
+
+前置：DSH 已集成 [plugin-registry](https://github.com/dsh-external/plugin-registry)（`dsh registry` 可用）。**同时启用两个通道会双挂载**（Node 半挂两次、页面两个侧边栏）。
+
+```sh
+git clone https://github.com/omdsh-dev/DSH-better-sidebar.git && cd DSH-better-sidebar
+pnpm install && pnpm build
+node scripts/package-registry.mjs   # 组装 registry/ 暂存（含清单 + 产物 + README，不入库）
+dsh registry install ./registry     # 安装（默认禁用）
+dsh registry enable dsh-external/dsh-better-sidebar
+```
+
+更新：`git pull && pnpm install && pnpm build` → `node scripts/package-registry.mjs` → `dsh registry uninstall/install/enable`。切换通道前先移除另一通道的挂载。
+
+</details>
+
+## 🖼️ 特性巡礼
+
+> 以下均为真实界面实拍。
+
+### 🗂️ 文件工作台：资源管理器
+
+支持两种格式的资源管理器：内嵌在文件预览中 / 独立显示文件树。懒加载目录树、软链接按目标类型展示（目录软链接可展开、失效链接标红）、全局文件名搜索、上传文件/文件夹与拖放上传、右键菜单（在新 Tab 打开 / 在侧边打开 / 复制路径）、悬浮 `@文件` 一键引用进输入框。
+
+<div align="center"><img width="880" alt="文件资源管理器" src="https://github.com/user-attachments/assets/a410bfd2-a8ba-43e6-873e-22417756e94d" /></div>
+<div align="center"><img width="880" alt="CodeMirror 代码编辑器" src="https://github.com/user-attachments/assets/b44b488e-568c-4ee0-b96c-e9c906598a77" /></div>
+
+### 📝 Markdown · 图片 · PDF 内联预览
+
+Markdown 预览支持 **Mermaid 图表**（`securityLevel: 'strict'` 安全渲染 + 二次清洗；点击图表弹窗放大、滚轮缩放、拖拽平移）；图片 / PDF 走媒体路由内联展示；Office 三件套由生态插件补齐。
+
+<div align="center"><img width="880" alt="Markdown + Mermaid 预览" src="https://github.com/user-attachments/assets/fe0e5182-55bb-45cc-b98b-a2877c2bdd38" /></div>
+<div align="center"><img width="880" alt="图片内联预览" src="https://github.com/user-attachments/assets/f9a58c30-5b7a-48b5-9e22-37d7e071f593" /></div>
+
+### 💻 真实终端
+
+xterm.js + node-pty 真实 shell（不是模拟器）：断线重连 transcript 回放、shell / shellArgs 可配置（设置页或 `cordis.patch.yml`）、可选为模型注入 `terminal_*` 工具（agent 可直接开终端跑命令）。
+
+<div align="center"><img width="880" alt="真实终端" src="https://github.com/user-attachments/assets/0dad6ad3-ff3f-4b5a-86d2-f832ce65323e" /></div>
+
+### 🌿 Git 面板
+
+暂存 / 取消暂存 / 提交（`Ctrl+Enter`）/ 还原，历史列表；点击改动文件打开 **VSCode 式 diff tab**（红绿行级对比）。
+
+<div align="center"><img width="880" alt="Git 面板" src="https://github.com/user-attachments/assets/e7fc1220-305f-4bca-8583-e77ab4f4fa78" /></div>
+
+### 🌐 内嵌浏览器
+
+多开网页 tab：后退 / 前进 / 刷新 / 地址栏；内容运行在**不透明源沙箱 iframe**（界面实时显示沙箱状态，可按页面临时解锁）；聊天里的外链点击可被接管到侧边栏打开（按协议分流，可配）。
+
+<div align="center"><img width="880" alt="内嵌浏览器" src="https://github.com/user-attachments/assets/9bc6b65a-64fc-4942-a685-76e391e55606" /></div>
+
+### 🧩 任务页：子代理拓扑 + 后台任务
+
+子代理树实时拓扑（运行状态、批量实时预览）+ 后台任务清单（退出码 / 实时输出 / 强制终止）；新子代理 / 新任务可自动展开侧边栏（可关）。
+
+<div align="center"><img width="880" alt="任务页：子代理拓扑" src="https://github.com/user-attachments/assets/dcd8ed2f-59fa-405b-937b-2d250f5034dd" /></div>
+
+### 💬 侧边对话(beta)
+
+Codex 风格侧边线程：**每个对话一个独立 Tab**；线程继承主会话完整上下文（含进行中回合，以 interrupted 诚实冻结）独立运行，不污染主会话；可持续追问、重启冷恢复；一键「保存为新会话」提升为顶层会话。
+
+<div align="center"><img width="880" alt="侧边对话(beta)" src="https://github.com/user-attachments/assets/3a338c36-f5de-4000-95f3-4b1cd04f60fc" /></div>
+
+### 🪟 双工作台：右侧栏 + 底部面板 + 分栏
+
+右侧栏与底部面板可同时展开；拖 Tab 到分栏边缘**拆分**、拖到中间**合并**（可跨面板）；面板宽高左缘/上缘拖拽调节；移动端自动合并为全宽抽屉。
+
+<div align="center"><img width="880" alt="双工作台（右侧栏 + 底部面板）" src="https://github.com/user-attachments/assets/dfdb875e-a1a8-4d4b-8340-353736b1708f" /></div>
+
+### ⚙️ 声明式设置
+
+设置页「侧边卡片」分区：每个 tab / 预览器一张小卡片，独立开关（高亮启用态 + 品牌开关滑块）；二级设置经卡片底部「功能设置」条弹窗（开关 / 文本 / 数字 / 下拉）；插件自有设置持久化在 `pluginSettings`。
+
+<div align="center"><img width="880" alt="声明式设置：侧边卡片" src="https://github.com/user-attachments/assets/0800ca64-621e-48da-b7df-aecfddc3ec29" /></div>
+
+### 📱 移动端
+
+窄屏（<768px）自动切换为全宽抽屉：底栏 tab 一次性并入右侧栏，触屏拖拽可调。
+
+<div align="center"><img width="360" alt="移动端全宽抽屉" src="https://github.com/user-attachments/assets/a82ba78a-f4cf-4d85-80e8-050a05beb144" /></div>
+
+## 🌐 插件生态
+
+`ctx.betterSidebar` 服务向所有插件开放两个扩展点：**`registerTab`（注册侧边栏页面）** 与 **`registerFileViewer`（注册文件预览器）**。内置的 7 tab + 6 viewer 与第三方插件走同一套 API，能力完全对等。
+
+```ts
+import type {} from 'dsh-better-sidebar'  // 触发 ctx.betterSidebar 类型合并
+export const inject = ['betterSidebar']
+export function apply(ctx: Context) {
+  ctx.effect(() => ctx.betterSidebar.registerTab({
+    id: 'my-plugin:db', title: 'Database', component: ({ scope }) => <DbView sessionId={scope.sessionId} />,
+  }))
+  ctx.effect(() => ctx.betterSidebar.registerFileViewer({
+    id: 'my-plugin:csv', exts: ['csv'], fetchStrategy: 'custom',
+    load: async (path, scope) => parseCsv(await fetchText(scope, path)),
+    component: ({ customData }) => <CsvGrid rows={customData} />,
+  }))
+}
+```
+
+GitHub topic [`dsh-better-sidebar`](https://github.com/topics/dsh-better-sidebar) 下已有 **28+ 生态插件**（持续增长中）：
+
+<div align="center">
+  <a href="https://github.com/user-attachments/assets/d4385b7e-aab4-425d-a5c4-2da5da81a34e"><img width="66%" alt="设置页「添加插件」弹窗：推荐插件目录 + 一键复制安装命令" src="https://github.com/user-attachments/assets/d4385b7e-aab4-425d-a5c4-2da5da81a34e" /></a><br />
+  <i>设置页「侧边卡片」内置「添加插件」弹窗：推荐目录 + 一键复制安装命令 + 直达 GitHub topic</i>
+</div>
+
+### 📑 Tab 插件（注册侧边栏页面）
+
+<details>
+<summary><b>23 个插件（点击展开）</b></summary>
+
+| 插件 | ⭐ | 简介 |
+|---|---|---|
+| [ChenRuoT/dsh-sidebar-qa](https://github.com/ChenRuoT/dsh-sidebar-qa) | <img alt="stars" src="https://img.shields.io/github/stars/ChenRuoT/dsh-sidebar-qa?style=flat&color=4d6bfe" /> | 划选追问侧边页：类 Codex 侧边提问 / Claude Code `/btw` |
+| [fuhefei/dsh-sentinel](https://github.com/fuhefei/dsh-sentinel) | <img alt="stars" src="https://img.shields.io/github/stars/fuhefei/dsh-sentinel?style=flat&color=4d6bfe" /> | 条件驱动唤醒系统：文件 / 命令 / HTTP / 进程 / Webhook 监视，到点唤醒 agent；dock + 侧栏分支 + 全局仪表盘 |
+| [jiuge2467/dsh-studio](https://github.com/jiuge2467/dsh-studio) | <img alt="stars" src="https://img.shields.io/github/stars/jiuge2467/dsh-studio?style=flat&color=4d6bfe" /> | 全栈增强工作台：多源 MCP 可视化调试中枢、视觉思考引擎 |
+| [Iwctwbh/dsh-flowglass](https://github.com/Iwctwbh/dsh-flowglass) | <img alt="stars" src="https://img.shields.io/github/stars/Iwctwbh/dsh-flowglass?style=flat&color=4d6bfe" /> | 流镜 Flowglass：会话流程图实时可视化（消息 / 工具组 / 子代理分支） |
+| [FeatherHunter/dsh-mattpocock-skills-deck](https://github.com/FeatherHunter/dsh-mattpocock-skills-deck) | <img alt="stars" src="https://img.shields.io/github/stars/FeatherHunter/dsh-mattpocock-skills-deck?style=flat&color=4d6bfe" /> | mattpocock/skills 游戏化任务系统：地图拨迷雾、任务栏推进 |
+| [GULI-lab/DSH-element-source](https://github.com/GULI-lab/DSH-element-source) | <img alt="stars" src="https://img.shields.io/github/stars/GULI-lab/DSH-element-source?style=flat&color=4d6bfe" /> | 点击页面任意 UI 元素直达 Vue / React / Svelte / Angular 源码并送入会话 |
+| [Lzh3070/dsh-file-review-tab](https://github.com/Lzh3070/dsh-file-review-tab) | <img alt="stars" src="https://img.shields.io/github/stars/Lzh3070/dsh-file-review-tab?style=flat&color=4d6bfe" /> | 文件改动审查页：行级红绿 diff + 撤销 + chat 行深链 |
+| [yq04/dsh-git-remotes](https://github.com/yq04/dsh-git-remotes) | <img alt="stars" src="https://img.shields.io/github/stars/yq04/dsh-git-remotes?style=flat&color=4d6bfe" /> | Git 远程页：分支 / 上游 / ahead-behind，fetch 可 prune、ff-only pull、确认后 push |
+| [ztyhehe/dsh-better-sidebar-svn](https://github.com/ztyhehe/dsh-better-sidebar-svn) | <img alt="stars" src="https://img.shields.io/github/stars/ztyhehe/dsh-better-sidebar-svn?style=flat&color=4d6bfe" /> | SVN 源码管理页：status / diff / log / commit / update / revert / 冲突解决，与内置 Git 面板对称 |
+| [Melody-max114/dsh-excel-panel](https://github.com/Melody-max114/dsh-excel-panel) | <img alt="stars" src="https://img.shields.io/github/stars/Melody-max114/dsh-excel-panel?style=flat&color=4d6bfe" /> | Excel 编辑页：xlsx 预览 / 编辑、公式实时计算、合并单元格、保存回原文件 |
+| [v587d/dsh-anysearch-refs](https://github.com/v587d/dsh-anysearch-refs) | <img alt="stars" src="https://img.shields.io/github/stars/v587d/dsh-anysearch-refs?style=flat&color=4d6bfe" /> | AnySearch 搜索结果引用卡片：搜索词、来源摘要、关键词高亮 |
+| [mlosun/dsh-docs-panel](https://github.com/mlosun/dsh-docs-panel) | <img alt="stars" src="https://img.shields.io/github/stars/mlosun/dsh-docs-panel?style=flat&color=4d6bfe" /> | 全局文档面板：随身 Markdown 笔记，任何工作区随时可读 |
+| [lnyuqian/dsh-skill-sidebar](https://github.com/lnyuqian/dsh-skill-sidebar) | <img alt="stars" src="https://img.shields.io/github/stars/lnyuqian/dsh-skill-sidebar?style=flat&color=4d6bfe" /> | 技能面板：扫描本机技能目录，4-6 字功能短语 + 一键复制调用 + 置顶 |
+| [g-yixuan/dsh-sidechat](https://github.com/g-yixuan/dsh-sidechat) | <img alt="stars" src="https://img.shields.io/github/stars/g-yixuan/dsh-sidechat?style=flat&color=4d6bfe" /> | Codex 风格侧边对话 + 划选引用注释（轻量消费插件） |
+| [thirsty5034/dsh-ssh-tunnel](https://github.com/thirsty5034/dsh-ssh-tunnel) | <img alt="stars" src="https://img.shields.io/github/stars/thirsty5034/dsh-ssh-tunnel?style=flat&color=4d6bfe" /> | 多主机 SSH 隧道 + SSH 管理器页 |
+| [thirsty5034/dsh-git-forge](https://github.com/thirsty5034/dsh-git-forge) | <img alt="stars" src="https://img.shields.io/github/stars/thirsty5034/dsh-git-forge?style=flat&color=4d6bfe" /> | GitHub / Gitea 账号、项目授权与推送策略 |
+| [YesSanSan/dsh-conversation-outline](https://github.com/YesSanSan/dsh-conversation-outline) | <img alt="stars" src="https://img.shields.io/github/stars/YesSanSan/dsh-conversation-outline?style=flat&color=4d6bfe" /> | 对话大纲页：按轮次结构化展示、一键跳转、LLM 一句话标题 |
+| [Wulabalabo/dsh-sidebar-Explorer-Plus](https://github.com/Wulabalabo/dsh-sidebar-Explorer-Plus) | <img alt="stars" src="https://img.shields.io/github/stars/Wulabalabo/dsh-sidebar-Explorer-Plus?style=flat&color=4d6bfe" /> | 文件管理页：上传 / 移动 / 删除 / 重命名 / 新建文件夹（补全写操作） |
+| [yq04/dsh-turn-review](https://github.com/yq04/dsh-turn-review) | <img alt="stars" src="https://img.shields.io/github/stars/yq04/dsh-turn-review?style=flat&color=4d6bfe" /> | 本轮审查：逐回合审查 agent 改动 |
+| [Ghz114514/dsh-refpics](https://github.com/Ghz114514/dsh-refpics) | <img alt="stars" src="https://img.shields.io/github/stars/Ghz114514/dsh-refpics?style=flat&color=4d6bfe" /> | Pinterest 风格参考图搜索：瀑布流、侧栏画板、下载与 Eagle 收藏 |
+| [yzlin499/dsh-yzlin499-easy-plugins](https://github.com/yzlin499/dsh-yzlin499-easy-plugins) | <img alt="stars" src="https://img.shields.io/github/stars/yzlin499/dsh-yzlin499-easy-plugins?style=flat&color=4d6bfe" /> | 实用小工具集（毛坯房 DSH 友好） |
+| [dong-victor/dsh-better-sidebar-starter](https://github.com/dong-victor/dsh-better-sidebar-starter) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-starter?style=flat&color=4d6bfe" /> | 运行配置页：IDEA 式 Run/Debug 配置（npm / springboot / python / custom）——一键启动、历史保存、WebSocket 实时日志（ANSI 彩色）、多实例并行、进程树跨平台杀死 |
+| [baosfeng/my-dsh-plugins](https://github.com/baosfeng/my-dsh-plugins) | <img alt="stars" src="https://img.shields.io/github/stars/baosfeng/my-dsh-plugins?style=flat&color=4d6bfe" /> | 个人多插件合集（`dsh-file-activity`）：侧边栏文件活动页——记录文件读取 / 新增 / 修改历史与统计，按文件夹平铺，点击用原生预览打开 |
+
+</details>
+
+### 🖼️ 预览插件（注册文件预览器）
+
+<details>
+<summary><b>3 个插件（点击展开）</b></summary>
+
+| 插件 | ⭐ | 简介 |
+|---|---|---|
+| [HuanLinOTO/dsh-plugin-better-sidebar-plugin-office](https://github.com/HuanLinOTO/dsh-plugin-better-sidebar-plugin-office) | <img alt="stars" src="https://img.shields.io/github/stars/HuanLinOTO/dsh-plugin-better-sidebar-plugin-office?style=flat&color=4d6bfe" /> | Office 三件套预览（.docx / .xlsx / .pptx），独立 bundle 瘦身主体（官方推荐目录收录） |
+| [zemul/dsh-video-preview](https://github.com/zemul/dsh-video-preview) | <img alt="stars" src="https://img.shields.io/github/stars/zemul/dsh-video-preview?style=flat&color=4d6bfe" /> | 视频内联预览：.mp4 / .webm / .mov / .mkv / .avi，自带 /video 路由支持 HTTP Range 拖进度条 |
+| [dong-victor/dsh-better-sidebar-jupyter](https://github.com/dong-victor/dsh-better-sidebar-jupyter) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-jupyter?style=flat&color=4d6bfe" /> | `.ipynb` 可运行 Notebook 视图：懒启动 Python kernel、流式输出、保存回写 |
+
+</details>
+
+### 🧰 增强与工具
+
+<details>
+<summary><b>2 个插件（点击展开）</b></summary>
+
+| 插件 | ⭐ | 简介 |
+|---|---|---|
+| [dong-victor/dsh-better-sidebar-terminal-plus](https://github.com/dong-victor/dsh-better-sidebar-terminal-plus) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-terminal-plus?style=flat&color=4d6bfe" /> | 终端增强：内嵌 Nerd Font 图标字体、修复 xterm 图标渲染、稳定终端 cwd |
+| [Max-Null/dsh-sidebar-preview-select](https://github.com/Max-Null/dsh-sidebar-preview-select) | <img alt="stars" src="https://img.shields.io/github/stars/Max-Null/dsh-sidebar-preview-select?style=flat&color=4d6bfe" /> | 预览划选增强：侧边栏预览里划选文本 → 浮动「发送到会话」 |
+
+</details>
+
+> 📣 **上架你的插件**：给仓库打上 `dsh-better-sidebar` topic 即出现在 [topic 页](https://github.com/topics/dsh-better-sidebar)；再向 [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts) / [`src/client/plugins-viewers.ts`](./src/client/plugins-viewers.ts) 提一条 `PluginEntry` PR，即可进入设置页内置推荐目录（数据完整性由 `tests/plugin-list.spec.ts` 守护）。
+
+## 🆕 最近更新
+
+<div align="center">
+  <a href="https://github.com/user-attachments/assets/d2aea86b-a776-4f01-a6b8-b26b27314336"><img width="33%" alt="侧边栏" src="https://github.com/user-attachments/assets/d2aea86b-a776-4f01-a6b8-b26b27314336" /></a>
+  <a href="https://github.com/user-attachments/assets/946f7028-4967-461e-a750-d1b5056b62d0"><img width="33%" alt="服务化基座截图" src="https://github.com/user-attachments/assets/946f7028-4967-461e-a750-d1b5056b62d0" /></a>
+</div>
+
+**支持的 DSH 版本**：<a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="支持的 DSH 版本：0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a> · 完整发布历史见 [Releases](https://github.com/omdsh-dev/DSH-better-sidebar/releases)
+
+### v0.15.1
+
+自 v0.15.0 以来的全部更改：
+
+**✨ 新功能**
+
+- 💬 **侧边对话 Codex 风格转录重构**（[#314](https://github.com/omdsh-dev/DSH-better-sidebar/pull/314)）：转录改为**折叠行**——工具调用 / 思考 / 上下文注入统一为安静的单行 chrome（chevron + 标签 + 单行参数摘要，展开为 hairline 缩进正文，无卡片无填充），流式标签与创建 shimmer（shimmer = 生成中）、失败工具 danger、`prefers-reduced-motion` 停帧；**首条问题不再被边界提示吞掉**——上下文注入与首问拆分交付（边界 + 快照经 `agent.inject` 排队、问题唤醒驱动），转录把注入映射为可折叠注入行、真实用户消息（**含首问**）渲染为用户气泡，旧线程的首问同样拆分为独立气泡
+- 📖 **README 重写**：功能导览（逐特性实机截图）、用户视角 DSH 兼容徽章、简化安装流程（`add` → `approve-builds` → `add`、node-pty 安全构建、粘贴到 DSH 安装提示）、插件生态 28+ 与分类折叠展示
+
+**🐛 修复**
+
+- 🖥️ **终端跨会话切换保活**（[#323](https://github.com/omdsh-dev/DSH-better-sidebar/pull/323)）：切到其他会话不再被当作瞬时掉线——客户端卸载时发送 `park` 控制帧，主机跳过 30s 重连宽限倒计时；切回会话（`open()` 取消 parked）或显式关闭恢复正常生命周期；agent 终端保持无限期存活
+- 📂 **文件树上传遮罩不再拦截 Tab 拖拽**（[#317](https://github.com/omdsh-dev/DSH-better-sidebar/pull/317)）：拖拽 Tab（重排 / 跨 pane split）经过资源管理器时不再弹上传遮罩、不吞事件——统一按 `dataTransfer.types` 含 `Files` 门控（与面板宿主 shield 一致），Tab 正常落下；OS 文件拖拽行为不变
+- 💬 **子代理自动展开去抖**（[#314](https://github.com/omdsh-dev/DSH-better-sidebar/pull/314)）：Side Chat 线程创建不再误弹任务页——0→N 触发 500ms 重臂并对实时快照按原基线重评估，标题过滤器识别线程后才放行；真实子代理依然自动展开
+
+### v0.15.0
+
+自 v0.14.0 以来的全部更改：
+
+**✨ 新功能**
+
+- 💬 **侧边对话(beta) Tab**（[#286](https://github.com/omdsh-dev/DSH-better-sidebar/pull/286)）：Codex 风格的侧边线程，**每个对话一个独立 Tab**——子会话继承主会话完整上下文（已完成回合 + 未回答消息 + 进行中回合的 assistant 输出与工具调用，以「interrupted」冻结标记诚实继承）；同组合创建（同 preset / provider / model）复用前缀输入缓存；线程对主会话列表不可见、零子代理目录噪音；线程内可持续追问（重启后自动冷恢复）；一键「保存为新会话」提升为顶层会话（[设计文档](docs/plans/2026-08-20-sidechat-tab-design.md)）
+- 📤 **文件窗口上传**（[#239](https://github.com/omdsh-dev/DSH-better-sidebar/pull/239)）：头部「上传文件 / 上传文件夹」按钮 + 拖放上传（拖到树区 = 工作区根，目录行 = 进该目录，文件行 = 进其所在目录，对齐 VSCode）；上传时全屏模糊进度弹层（文件级进度 + 取消 / Esc）；上传中按钮禁用、成功后文件树自动刷新
+- 🧩 **桌面兼容四选项**（[#284](https://github.com/omdsh-dev/DSH-better-sidebar/pull/284)）：位置兼容模式改为**主行下拉**——**自动检测**（默认，保守：仅使用标准的 Window Controls Overlay 几何，32/36px 等各壳差异自动跟随、最大化/还原实时更新，网页环境零修改）/ **DSH官方Web**（显式零适配）/ **壳兼容方案**（内置预设，手动启用；只收录 issue/PR 中出现过且 100+ star 的壳，命中环境带「已检测」提示）/ **自定义方案**（自定义 CSS + 下移距离）。旧版本已有兼容配置的用户自动落到自定义方案；交互控件统一退出桌面拖拽区（`no-drag`）；底栏推挤锚点复合选择器双保险（`[data-pane]` 与 `:has(> [data-slot])`）
+- 🎛️ **设置页 UI/UX 现代化**（[#300](https://github.com/omdsh-dev/DSH-better-sidebar/pull/300)）：侧边卡片二级设置入口改为卡片底部「功能设置」设置条（替代右下角隐形齿轮，可发现性提升）；协调双色启用态（brand 激活强调 + success 绿勾选徽标）；全部颜色仍为 `--dsw-alias-*` 令牌派生，皮肤体系自动跟随
+- ➕ **推荐插件目录新增**：`dsh-docs-panel` 全局文档面板（[#230](https://github.com/omdsh-dev/DSH-better-sidebar/pull/230)）、`dsh-flowglass`（[#261](https://github.com/omdsh-dev/DSH-better-sidebar/pull/261)）、`dsh-git-forge` 与 `dsh-ssh-tunnel`（[#204](https://github.com/omdsh-dev/DSH-better-sidebar/pull/204)）、`dsh-turn-review`（[#102](https://github.com/omdsh-dev/DSH-better-sidebar/pull/102)）
+
+**🐛 修复**
+
+- ⚡ **子代理页实时预览批量接口**（[#298](https://github.com/omdsh-dev/DSH-better-sidebar/pull/298)）：旧实现每个 running 子代理独立轮询 `subagents.history`，host 侧每次触发全量子代理枚举形成 O(N²) 放大、多子代理并发时页面卡顿——改为单个批量接口 `subagents.live`（一次枚举整棵子代理树）+ 客户端单轮询、单在途请求；展示逻辑与文案不变
+- 🖱️ **拖拽中断 / 快速释放不再回滚**（[#249](https://github.com/omdsh-dev/DSH-better-sidebar/pull/249)，关闭 [#247](https://github.com/omdsh-dev/DSH-better-sidebar/issues/247) [#248](https://github.com/omdsh-dev/DSH-better-sidebar/issues/248)）：中断 / 快速释放提交最后已知位置；HMR 后中心列重定位兜底（修复热更新后底栏空白）
+- 📐 **推挤变量挂载期持续有效**（[#259](https://github.com/omdsh-dev/DSH-better-sidebar/pull/259)，修复 [#258](https://github.com/omdsh-dev/DSH-better-sidebar/issues/258)）：拖拽松手后底边栏不再闪全宽
+- 🔧 **适配 DSH 0.1.1-rc.1 / rc.2（@next）**（[#297](https://github.com/omdsh-dev/DSH-better-sidebar/pull/297) [#305](https://github.com/omdsh-dev/DSH-better-sidebar/pull/305)）：无代码逻辑改动
+- 🔒 **上传链路安全加固**（[#239](https://github.com/omdsh-dev/DSH-better-sidebar/pull/239)）：`relativePath` 空段 / 绝对路径显式拒绝；临时文件唯一命名（并发上传互不干扰、崩溃不阻塞）；写流错误监听（磁盘失败不崩溃进程）；客户端错误码与服务端统一、413 本地化
+
+<details>
+<summary><b>历史版本（v0.12.0 – v0.14.0）</b></summary>
+
+### v0.14.0
+
+> ⚠️ 本版起需要 DSH ≥ 0.1.0-rc.8。自 v0.13.1 以来的全部更改：
+
+**✨ 新功能**
+
+- 🖼️ **统一面板宿主注入重构**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：面板/开关簇迁入 `[data-dsh-panel-host]` 固定含块层（`fixed inset-0 z-40`），免疫桌面套壳中间层 transform 对 fixed 含块的劫持；挂载自检（页面级 transform → `data-dsh-panel-host-degraded` 降级同步，按未修正几何判定、祖先变换消失才退出）；推挤锚点改 `#root [data-dsh-frame] > [data-pane="conversation"]` + `#root` calc 宽度防桌面壳加性溢出；chunk 激活重验证（HEAD+ETag 保留未变 chunk，5s 超时兜底 fail-open）；`visualViewport` 键盘 inset + `env(safe-area-inset-*)` 移动端适配
+- 📂 **文件打开方式默认独立**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：`editorExplorer` 默认从「合并」改为「独立」——新会话树点击 / 打开文件按路径**新开**文件 tab，无路径窗口即纯资源管理器；合并模式保留为可选手动开启
+- 🖥️ **终端 shell / shellArgs 设置页可配**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：终端卡齿轮二级页面新增「Shell 路径」「Shell 参数」两行配置（此前只能通过 `cordis.patch.yml` 配置）——设置页写入后对**之后打开的** UI 终端与模型终端（`terminal_create`）即时生效；留空保持 yaml → `$SHELL` / 登录 shell / `powershell.exe` 的既有解析顺序
+- 🏷️ **设置页版本徽标**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：侧边卡片设置页顶部新增 `DSH-better-sidebar v0.14.0` 身份徽标（版本与服务实例同步，由测试守护）
+- 🔍 **添加插件目录搜索 / 分组 / 独立滚动**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：为插件生态增长做准备——目录列表顶部加实时搜索（按名称 / id / 描述过滤），条目支持可选 `category` 分组渲染，列表独立滚动（弹窗不再随条目数无限增长）
+
+**🐛 修复**
+
+- 🧩 **rc.8 模块系统迁移**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：rc.8 不再暴露 `window.__DSH_MODULES__` 页面全局（改由 `ctx.modules` 服务提供），懒加载 chunk 的外部依赖解析全面失效——client 注入 `modules` 服务 + 插件自有全局共享给 chunk 副本（终端 / 编辑器 / Mermaid 恢复正常按需加载）
+- 🧩 **chunk 重验证屏障健壮性**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：HEAD 重验证加 5s 超时兜底（路由挂起时 fail-open 重取，屏障不再可能无限期阻塞懒加载）；`resetChunks` 清挂起的重验证屏障
+- 🖱️ **拖拽健壮性**（[#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)）：快速释放（浏览器合并 / 丢失 pointermove 突发）时提交最后已知拖动位置而非回退；`pointercancel` / 捕获丢失中断同样保留拖动结果；提交后立即重测中心列（消除底栏宽度中间帧抖动）；HMR 重激活后中心列重定位兜底（`<html>` 样式观察 + 底栏打开重测），修复热更新后底栏空白 / 输入框位移
+
+### v0.13.1
+
+**✨ 新功能**
+
+- 📊 **Markdown 预览安全渲染 Mermaid 图表**（[#164](https://github.com/omdsh-dev/DSH-better-sidebar/pull/164)）：预览的 md 含 mermaid fence 时按需下发 `client-mermaid.js` chunk（~7MB，无 mermaid 文件零加载）；纵深防御渲染——`securityLevel: 'strict'` + `htmlLabels: false`（节点文字走真实 SVG `<text>`）+ SVG 注入前二次清洗（删 `foreignObject`/`script`/外来 HTML 元素、剥 `@*`/`on*`/`href` 属性）；点击图表在弹窗中放大（滚轮以鼠标为中心缩放、拖拽平移、工具栏与快捷键），深浅色跟随重渲、解析失败回退原码
+- 🖥️ **终端 shell 与 shellArgs 可配置**（[#125](https://github.com/omdsh-dev/DSH-better-sidebar/pull/125)）：`cordis.patch.yml` 的 `better-sidebar.config` 可指定 `shell` / `shellArgs`（`shellArgs` 非空时完全替换默认参数；未配置维持自动解析 `$SHELL` / 登录 shell / `powershell.exe` 原行为），UI 终端与 agent 终端（`terminal_create`）同时生效；终端 tab 标题改用 shell 名（bash / zsh / powershell），内部标识改 UUID，同 shell 可开多个终端
+
+**🐛 修复**
+
+- 🔗 **聚合双挂载自动退让**（[#200](https://github.com/omdsh-dev/DSH-better-sidebar/pull/200)）：聚合包（如 dsh-web-ui-all）以独立条目 id 挂载同包时，`cordis.patch.yml` 的守卫表达式自动禁用自身 `better-sidebar` 行，不再重复注册 `/sidebar/api` 导致 `duplicate prefix route` 整个插件树启动失败（`dsh web` 崩溃）；独立安装行为不变
+- 🔧 **适配 DSH 0.1.0-rc.7**（[#207](https://github.com/omdsh-dev/DSH-better-sidebar/pull/207)，修复 [#206](https://github.com/omdsh-dev/DSH-better-sidebar/issues/206)）：修复 DSH 主框架升至 rc.7 后选模型 / 发消息报 `agent-presets: refusing to compose an unscoped context` 的问题
+
+### v0.13.0
+
+**✨ 新功能**
+
+- 📁 **文件窗口与资源管理器二合一**（[#151](https://github.com/omdsh-dev/DSH-better-sidebar/pull/151)）：新 `editorExplorer` 设置（编辑器卡齿轮）——文件 tab 增加路径输入框头部 + 可开关的右侧停靠文件树（每 tab 记忆展开/宽度，左缘拖拽调宽 160~480px，全局文件名搜索走 host `fs.search` 路由，预算封顶并跳过 `.git` / 符号链接目录）；独立模式（默认）树点击 / 输入框 Enter **按路径新开**文件 tab，合并模式**原地切换**当前 tab；新会话默认 seed 空文件窗口（`Files`）替代 explorer tab，无路径窗口在独立模式为纯资源管理器、合并模式为带 chrome 的空文件窗口；树右键提供「在新 Tab 中打开」「在侧边打开」（split）
+- 🎛️ **声明式设置 select 行**（[#151](https://github.com/omdsh-dev/DSH-better-sidebar/pull/151)）：设置项新增 `type: 'select'`（`options` 支持 value/title/desc/icon，`multi` 多选存数组）；带图标的选项渲染大图标选项卡、收起态同样显示图标；`editorExplorer` 改为图标化下拉（合并 / 独立）；能力清单新增 `settingSelect`
+- 🔀 **与 dsh-web-ui 家族右侧面板互斥**（[#181](https://github.com/omdsh-dev/DSH-better-sidebar/pull/181)）：读取 `aionui-panel` 设置命名空间的提供方选择——当选择「使用 aionui-panel」时，整个 better-sidebar（右侧栏 / 底部面板 / 浮动入口 / 各类接管）不再挂载；选择 DSH-better-sidebar（或未安装 aionui）时正常。设置页保存后实时生效（settings-document 推送），无需刷新
+
+### v0.12.3
+
+**✨ 新功能**
+
+- 🎨 **皮肤兼容（令牌驱动）**：全面消费 DSH 设计令牌，与 dsh-web-ui 皮肤中心 10 款皮肤兼容，换肤自动跟随；终端/编辑器表面在透明/半透明玻璃值下回退不透明底色，文字不叠在皮肤背景上（[#110](https://github.com/omdsh-dev/DSH-better-sidebar/pull/110)，修复 #106 #105 #90 #60，附带 #52 #57 #92）
+- 🗂️ **统一路径处理**：UNC 路径 / 软链接分类（目录软链接可展开、失效链接标红）、HTML 路由平台守卫（[#134](https://github.com/omdsh-dev/DSH-better-sidebar/pull/134)，#65 #67 #43 #79 #115）
+- 🖥️ **终端 shell 可配置**：设置项自定义 shell，Windows 自动探测 pwsh（[#95](https://github.com/omdsh-dev/DSH-better-sidebar/pull/95)）
+- 📝 **编辑器新增语言**：C# / Kotlin / Swift 语法高亮（[#120](https://github.com/omdsh-dev/DSH-better-sidebar/pull/120)）
+- 🧭 **设置页导航图标**：设置页导航图标与布局优化（[#114](https://github.com/omdsh-dev/DSH-better-sidebar/pull/114)）
+- ➕ **推荐插件目录新增**：`dsh-git-remotes`——Git 远程 Tab（分支/上游/ahead-behind、fetch 可 prune、ff-only pull、确认后才 push，不替换内置暂存/提交）（[#91](https://github.com/omdsh-dev/DSH-better-sidebar/pull/91)）；`dsh-video-preview`——视频内联预览（.mp4/.webm/.mov/.mkv/.avi 等，自带 /video 宿主路由支持 HTTP Range 206 拖进度条，不受 20MB mediaLimit 限制）（[#126](https://github.com/omdsh-dev/DSH-better-sidebar/pull/126)）
+
+**🐛 修复**
+
+- 🔧 **xterm 依赖迁移**：弃用的 xterm 迁移至 `@xterm/xterm`（Closes [#122](https://github.com/omdsh-dev/DSH-better-sidebar/issues/122)，[#128](https://github.com/omdsh-dev/DSH-better-sidebar/pull/128)）
+- 📝 **Markdown 编辑器**：选区转对话弹窗恢复可用（[#24](https://github.com/omdsh-dev/DSH-better-sidebar/pull/24)）
+- 🐛 **node-pty 加载失败不再拖垮 server**（[#140](https://github.com/omdsh-dev/DSH-better-sidebar/issues/140)）：宿主半改为懒加载 node-pty，缺失时插件照常挂载，终端以修复提示横幅（可复制命令 + 重试按钮）呈现，agent 终端工具自动跳过
+- 🧪 测试工程：单元测试拆分（#141）+ smoke 偶发失败修复
+
+</details>
 
 ## ⌨️ 快捷键
 
@@ -29,73 +417,24 @@
 | 引用文件到输入框 | 悬浮行尾 `@文件` 按钮 |
 | 复制文件路径 | 右键行 → 复制相对/绝对地址 |
 
-## 🚀 安装
+## 🔌 服务化扩展
 
-前置：已安装 DSH（`dsh web` 可运行），Node.js ≥ 20、pnpm ≥ 10。把下面提示词**整段**发给 DSH 即可自动完成克隆、构建、注册与安装：
+从 v0.4.0 起暴露 `ctx.betterSidebar` 服务，其他插件可注册侧边栏页面与文件预览器（内置 7 tab + 6 viewer 亦通过同一服务注册）。v0.12.1 补齐基座能力（完整类型导出、能力探测、状态订阅、tab 角标、生命周期回调、定向打开、插件自有设置等）。
 
-```text
-请帮我把 dsh-better-sidebar 插件安装到我的 web profile（插件 = VSCode 风格右侧侧边栏，仓库 https://github.com/dsh-external/DSH-better-sidebar）：
+完整接入文档：
+- **[`AGENTS.md`](./AGENTS.md)**——仓库内维护的接入文档（全字段、匹配算法、HMR 陷阱、声明式设置、版本探测）；
+- **[`docs/external-plugin-guide.md`](./docs/external-plugin-guide.md)**——面向外部插件开发者的接入指南（含完整最小示例）。
 
-1. 克隆并构建：
-   git clone https://github.com/dsh-external/DSH-better-sidebar.git ~/Code/DSH-better-sidebar
-   cd ~/Code/DSH-better-sidebar && pnpm install && pnpm build
-   （@deepseek-ai/* 从 npm 解析（0.0.1-rc.? 预发布版）；若 401/404，用安装者自己的只读令牌配置 ~/.npmrc，或把 devDependencies 改回指向自己 ~/.dsh/source/current 的 link:，不要继续）
-2. 注册到 web profile：
-   a. ~/.dsh/profiles/web/package.json 的 dependencies 加 "dsh-better-sidebar": "link:<第 1 步克隆目录的绝对路径>"
-   b. ~/.dsh/profiles/web/cordis.patch.yml 追加：
-      - insert:
-          - id: better-sidebar
-            name: 'dsh-better-sidebar'
-3. 在 ~/.dsh/profiles/web 执行 pnpm install
-4. 重启 DSH 并硬刷新（Cmd/Ctrl+Shift+R）验证
-```
+### ➕ 添加插件（推荐插件目录）
 
-> 安装 = 依赖登记（等价 `dsh plugin --profile web add link:<路径>`）+ 一行挂载行。**DSH 以 npm 包启动（如 `npx -p @deepseek-ai/dsh@0.0.1-rc.1 dsh web`）同样可用**（v0.4.3 起实测验证）。
+设置页「侧边卡片」两个网格末尾的**虚线卡片**分别打开 Tab / 预览插件弹窗：声明扩展点、「**在 GitHub 上浏览更多插件**」按钮（[GitHub topic `dsh-better-sidebar`](https://github.com/topics/dsh-better-sidebar)）、推荐插件目录（名字 / 仓库 / 简介 / 安装脚本），每个条目「**跳转**」直达仓库、「**复制**」把安装命令写入剪贴板。
 
-### 更新
-
-```text
-1. cd ~/Code/DSH-better-sidebar && git pull && pnpm install && pnpm build（401/404 处理同上）
-2. 核对注册仍有效（缺失才补）：profile package.json 的 link: 依赖 + cordis.patch.yml 挂载行
-3. 仅 client（src/client/*）→ 硬刷新即可；含 host（src/index.ts、src/config.ts 等）→ 重启 DSH + 硬刷新
-```
-
-### 通过 plugin-registry 安装（可选，与上述二选一）
-
-前置：DSH 已集成 [plugin-registry](https://github.com/dsh-external/plugin-registry)（`dsh registry` 可用）。**同时启用两个通道会双挂载**（Node 半挂两次、页面两个侧边栏）。
-
-```sh
-git clone https://github.com/dsh-external/DSH-better-sidebar.git && cd DSH-better-sidebar
-pnpm install && pnpm build
-node scripts/package-registry.mjs   # 组装 registry/ 暂存（含清单 + 产物 + README，不入库）
-dsh registry install ./registry     # 安装（默认禁用）
-dsh registry enable dsh-external/dsh-better-sidebar
-```
-
-更新：`git pull && pnpm install && pnpm build` → `node scripts/package-registry.mjs` → `dsh registry uninstall/install/enable`。切换通道前先移除另一通道的挂载。
-
-## 🔌 服务化：注册 tab 与文件预览器
-
-从 v0.4.0 起暴露 `ctx.betterSidebar` 服务，其他插件可注册侧边栏页面与文件预览器（内置 7 tab + 9 viewer 也走同一服务，吃自己的狗粮）：
-
-```ts
-import type {} from 'dsh-better-sidebar'  // 触发 ctx.betterSidebar 类型合并
-export const inject = ['betterSidebar']
-export function apply(ctx: Context) {
-  ctx.effect(() => ctx.betterSidebar.registerTab({
-    id: 'my-plugin:db', title: 'Database', component: ({ scope }) => <DbView sessionId={scope.sessionId} />,
-  }))
-}
-```
-
-完整接入文档（`TabDescriptor` / `FileViewerDescriptor` 全字段、匹配算法、HMR 陷阱、声明式设置）：见 [`AGENTS.md`](./AGENTS.md)。
+**收录新插件**：向 [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts)（Tab 注册）或 [`src/client/plugins-viewers.ts`](./src/client/plugins-viewers.ts)（文件预览注册）追加一条 `PluginEntry`，并把仓库打上 `dsh-better-sidebar` topic；数据完整性由 `tests/plugin-list.spec.ts` 守护。
 
 ## 🛠️ 开发与构建
 
 ```sh
-pnpm install      # @deepseek-ai/* 从 npm 解析（^0.0.1-rc.1），需安装者自己的只读令牌：
-                  # ~/.npmrc 配 //registry.npmjs.org/:_authToken=<自己的令牌>（勿写进仓库），
-                  # 或改 devDependencies 为 link: 指向自己的 ~/.dsh/source/current
+pnpm install      # @deepseek-ai/* devDependencies 已发布 0.1.1-rc.1，直接解析、无需令牌
 pnpm typecheck    # tsc --noEmit
 pnpm build        # → lib/index.js + lib/invariant.js + lib/client.js + lib/client-registry.js + lib/types
 pnpm test         # vitest（含 manifest 一致性守卫，需先 build）
@@ -114,10 +453,61 @@ pnpm watch        # tsdown --watch
 
 - Git 无 push/pull/fetch；无文件 watcher（手动刷新）；工具行内文件打开按钮不可拦截
 - 终端 Tab 拖到另一分栏会重挂载（shell 重开）
-- `.xlsx` 预览不保留单元格样式（SheetJS 社区版限制）；Office/PPTX 预览内联进 client bundle（约 23MB），首次加载较慢
+- Office 三件套预览（.docx/.xlsx/.pptx）已移至「推荐插件」（Office 预览插件，见设置页「添加插件」弹窗）；未安装时此类文件走代码/下载查看兜底
 - 浏览器沙箱无登录态/第三方 Cookie 受限，部分站点登录需走弹窗；被 `X-Frame-Options`/`frame-ancestors` 拒绝嵌入的站点（如 arxiv.org）显示原因面板（含「在浏览器中打开」）；iframe 内部跳转不进后退栈
 - HTML 预览渲染的是已保存文件（不反映未保存草稿）
+- 移动端（<768px）无底部面板：进入窄屏时其标签页一次性并入右侧栏（迁移后回桌面仍保留在右侧栏），桌面端的底部面板只在宽视口下可用；移动端底部首展自动开终端不触发
 
 ## 🖥️ 平台支持
 
 Windows / Linux / macOS 三平台适配（macOS 日常验证；其余经单元测试覆盖）；`node-pty` 优先预编译二进制，失败需编译工具链（Windows VS Build Tools / Linux make+g+++python3 / macOS Xcode CLT）。
+
+## 💬 社区
+
+微信 / QQ 交流群二维码将在此处展示。上传二维码图片（拖入任意 issue / comment 即可获得 `user-attachments` 链接）后，替换下方 `src` 并取消注释：
+
+<div align="center">
+  <!-- 微信群二维码
+  <img width="220" alt="微信群二维码" src="https://github.com/user-attachments/assets/REPLACE_ME" />
+  -->
+  <!-- QQ 群二维码
+  <img width="220" alt="QQ群二维码" src="https://github.com/user-attachments/assets/REPLACE_ME" />
+  -->
+</div>
+
+## 🤝 参与贡献
+
+- **代码改动走 PR**：`feat/*` / `fix/*` 分支开发 → `gh pr create`；纯文档改动可直接推 main
+- **收录生态插件**：给仓库打 `dsh-better-sidebar` topic + 向 [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts) / [`plugins-viewers.ts`](./src/client/plugins-viewers.ts) 提 PR
+- **提交前自检**：`pnpm typecheck && pnpm build && pnpm test`（CI 另有 npm 打包 → 真实挂载 → 无头渲染门禁 `pnpm test:mount`）
+- 仓库工作规范见 [`AGENTS.md`](./AGENTS.md)（含仓库硬约束与 CI 说明）
+
+## ⭐ Star History
+
+<a href="https://star-history.com/#omdsh-dev/DSH-better-sidebar&Date">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=omdsh-dev/DSH-better-sidebar&type=Date&theme=dark" />
+    <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=omdsh-dev/DSH-better-sidebar&type=Date" />
+  </picture>
+</a>
+
+## 👥 贡献者
+
+感谢每一位贡献者：
+
+<a href="https://github.com/omdsh-dev/DSH-better-sidebar/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=omdsh-dev/DSH-better-sidebar" alt="贡献者" />
+</a>
+
+## 🔗 友情链接
+
+- [dsh-tianshu-tui](https://github.com/huiliyi37/dsh-tianshu-tui)：DeepSeek Harness 交互式终端 UI 插件（渲染核心由自研 harness agent Tianshu-Tui 演进而来），在官方基础上增加 TDD 与证据门等工作流
+- [dsh-TUI](https://github.com/ccch1mneyyy/dsh-TUI)：Claude Code 风格全屏交互终端插件——像素鲸鱼顶栏、实时工作状态行、思考流式展开、双击 Esc 回滚、上下文进度条 + TPS 仪表，npm 一键安装
+- [dshfind 插件超市](https://dshfind.com/zh/plugins)：三方插件市场——GitHub topic `dsh-plugin` 下的公开仓库清单，每日同步 star、贡献者与增长数据
+- [DeepSeek Harness Desktop](https://github.com/anywhere-labs/deepseek-harness-desktop)：为 DeepSeek Harness 生态打造的现代化桌面端——无需配置 Node.js 或执行命令即可启动和管理本地 Harness 服务；[官网](https://www.dshdesktop.cn)
+
+---
+
+<div align="center">
+  <sub>MIT License · Built for the <a href="https://github.com/deepseek-ai/deepseek-harness">DeepSeek Harness</a> ecosystem · 在 <a href="https://github.com/topics/dsh-better-sidebar">topic dsh-better-sidebar</a> 发现更多生态插件</sub>
+</div>

README_EN.md

@@ -0,0 +1,513 @@
+# dsh-better-sidebar
+
+<!-- Hero -->
+<div align="center">
+  <b style="font-size: 1.15em;">A service-oriented sidebar framework, and a complete workbench out of the box</b><br /><br />
+  <a href="https://www.npmjs.com/package/dsh-better-sidebar"><img alt="npm version" src="https://img.shields.io/npm/v/dsh-better-sidebar" /></a>
+  <a href="https://www.npmjs.com/package/dsh-better-sidebar"><img alt="npm downloads" src="https://img.shields.io/npm/dm/dsh-better-sidebar" /></a>
+  <a href="https://github.com/omdsh-dev/DSH-better-sidebar/actions/workflows/ci.yml"><img alt="CI" src="https://github.com/omdsh-dev/DSH-better-sidebar/actions/workflows/ci.yml/badge.svg" /></a>
+  <a href="https://github.com/omdsh-dev/DSH-better-sidebar/stargazers"><img alt="GitHub stars" src="https://img.shields.io/github/stars/omdsh-dev/DSH-better-sidebar" /></a>
+  <a href="https://opensource.org/licenses/MIT"><img alt="License: MIT" src="https://img.shields.io/badge/License-MIT-yellow.svg" /></a>
+  <a href="https://dshfind.com/en/plugins/omdsh-dev/DSH-better-sidebar?ref=badge"><img alt="dshfind" src="https://dshfind.com/api/badge/omdsh-dev/DSH-better-sidebar?lang=en" /></a><br /><br />
+  <a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="Supported DSH versions: 0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a>
+  <a href="https://github.com/topics/dsh-better-sidebar"><img alt="Plugin ecosystem: GitHub topic dsh-better-sidebar" src="https://img.shields.io/badge/plugin%20ecosystem-topic%20dsh--better--sidebar-4d6bfe" /></a><br /><br />
+  <img alt="File management" src="https://img.shields.io/badge/-File%20management-4d6bfe" /> <img alt="Edit &amp; preview" src="https://img.shields.io/badge/-Edit%20%26%20preview-4d6bfe" /> <img alt="Embedded browser" src="https://img.shields.io/badge/-Embedded%20browser-4d6bfe" /> <img alt="Real terminal" src="https://img.shields.io/badge/-Real%20terminal-4d6bfe" /> <img alt="Git panel" src="https://img.shields.io/badge/-Git%20panel-4d6bfe" /> <img alt="Background tasks" src="https://img.shields.io/badge/-Background%20tasks-4d6bfe" /> <img alt="Side Chat" src="https://img.shields.io/badge/-Side%20Chat-4d6bfe" /> <img alt="Plugin integration" src="https://img.shields.io/badge/-Plugin%20integration-4d6bfe" /><br /><br />
+  <b>A dual workbench (right sidebar + bottom panel)</b> that opens its <code>ctx.betterSidebar</code> service to every plugin —<br />
+  register new sidebar pages and file viewers via <code>registerTab</code> / <code>registerFileViewer</code>.
+</div>
+
+<div align="center">
+  🌏 <a href="./README.md">中文</a> · <a href="./README_EN.md"><b>English</b></a>
+</div>
+
+<div align="center">
+  <video src="https://github.com/user-attachments/assets/23187822-047e-45cc-b480-fe997bd55b86" muted autoplay loop playsinline controls width="100%"></video>
+  <img alt="dsh-better-sidebar workbench" src="https://github.com/user-attachments/assets/dfdb875e-a1a8-4d4b-8340-353736b1708f" />
+</div>
+
+## 📑 Contents
+
+- [✨ Features](#-features)
+- [🚀 Installation](#-installation)
+- [🖼️ Feature Tour](#-feature-tour)
+- [🌐 Plugin Ecosystem](#-plugin-ecosystem)
+- [🆕 Recent Updates](#-recent-updates)
+- [⌨️ Keyboard Shortcuts](#-keyboard-shortcuts)
+- [🔌 Service API](#-service-api)
+- [🛠️ Development & Build](#-development--build)
+- [🔐 Security](#-security) · [⚠️ Known Limitations](#-known-limitations) · [🖥️ Platform Support](#-platform-support)
+- [💬 Community](#-community) · [🤝 Contributing](#-contributing) · [⭐ Star History](#-star-history) · [🔗 Friends](#-friends)
+
+## ✨ Features
+
+- **🗂️ File Workbench**: file explorer (lazy-loading tree; symlinks show their target kind — directory links expand, dangling links flagged) + CodeMirror editor; inline preview for images / Markdown (incl. Mermaid diagrams, strict-mode safe rendering + click-to-zoom) / HTML / PDF
+- **🌐 Embedded Browser**: multiple web tabs with back / forward / refresh; content runs in a sandboxed iframe; external links are routed by protocol by default — HTTP opens in the sidebar, HTTPS goes to the system browser (both adjustable in settings)
+- **💻 Real Terminal**: xterm.js + node-pty real shell, reconnect with transcript replay; optionally injects `terminal_*` tools for the model
+- **🌿 Git Panel**: real diff + VSCode-style diff tabs, history, right-click to stage / commit / revert
+- **🧩 Background Tasks**: agent topology + background tasks (exit codes / live output / force-kill)
+- **💬 Side Chat (beta)**: Codex-style side threads — the child inherits the parent's FULL context (completed turns + the pending question + the in-progress turn's assistant output and tool activity, honestly frozen as "interrupted") and runs independently without entering the main conversation; threads support continuous follow-ups (auto-resumed after a DSH restart) and one-click "Save as new session" promotion to a top-level session
+- **🪟 Dual Workbench**: right sidebar + bottom panel; drag tabs to split / merge panes (cross-panel), mobile auto-merges into a full-width drawer
+- **🔁 Session Isolation**: layout / tabs / panels persisted per session, stale state auto-purged
+- **⚙️ Declarative Settings**: per-item toggles in the "Side Cards" settings section, secondary settings via the gear dialog
+- **⚡ On-demand Loading**: only ~325KB core at startup; heavy deps (terminal / editor / mermaid diagrams) load on demand ([design](docs/plans/2026-08-12-lazy-chunks-design.md))
+- **🌏 i18n**: UI text follows DSH's language (zh / en) with live switching
+
+> 🔌 **Core principle**: service-first — the 7 built-in tabs + 6 viewers register through the same `ctx.betterSidebar` API as third-party plugins, with fully equal capabilities; anything the ecosystem can provide better is delegated to ecosystem plugins (**28+ ecosystem plugins** already — see "🌐 Plugin Ecosystem" below). See "🔌 Service API" and the [external plugin guide](./docs/external-plugin-guide.md).
+
+## 🚀 Installation
+
+**Prerequisites**: DSH installed (`dsh web` boots), Node.js ≥ 20, pnpm ≥ 10.
+
+**Supported DSH versions**:
+<a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="Supported DSH versions: 0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a>
+
+```sh
+dsh plugin --profile web add dsh-better-sidebar@latest   # first run fails: pnpm 11 blocks node-pty build scripts (the dependency is still written)
+cd ~/.dsh/profiles/web && pnpm approve-builds --all      # allow the build scripts (re-runs the install automatically)
+dsh plugin --profile web add dsh-better-sidebar@latest   # re-run succeeds
+```
+
+Then **hard-refresh the browser** (Cmd/Ctrl+Shift+R) to see the sidebar (DSH hot-reloads client changes; only host-half updates need a restart).
+
+**Or let DSH install it for you** — paste this prompt into any DSH session:
+
+```text
+Install the dsh-better-sidebar plugin (a sidebar workbench for DSH):
+1. Run: dsh plugin --profile web add dsh-better-sidebar@latest (the first run fails because pnpm 11 blocks node-pty build scripts — that's expected)
+2. In ~/.dsh/profiles/web run: pnpm approve-builds --all (allows the build scripts and re-runs the install)
+3. Run the add command again: dsh plugin --profile web add dsh-better-sidebar@latest
+4. When done, remind me to hard-refresh the browser (Cmd/Ctrl+Shift+R)
+If anything fails, check the troubleshooting table in the README at https://github.com/omdsh-dev/DSH-better-sidebar
+```
+
+<details>
+<summary><b>Updating</b></summary>
+
+```sh
+dsh plugin --profile web add dsh-better-sidebar@latest
+```
+
+or bump the version in `~/.dsh/profiles/web/package.json` (e.g. `"^0.15.0"`) and run `pnpm install`. Then hard-refresh the browser (Cmd/Ctrl+Shift+R) — client changes do not need a DSH restart.
+
+</details>
+
+<details>
+<summary><b>Troubleshooting</b></summary>
+
+| Symptom | Cause & fix |
+|---|---|
+| `Ignored build scripts` | pnpm 11 blocked build scripts. Run `pnpm approve-builds --all` in the profile directory (`~/.dsh/profiles/web`). |
+| `minimum release age` / version `< 24h` | The release is younger than 24 hours. Wait, or re-run once (pnpm auto-adds `minimumReleaseAgeExclude`). |
+| "profile directory not found" | Run `dsh web` once so it initializes `~/.dsh/profiles/web`. |
+| Two sidebars on the page | Double-mount. Old hand-written line: `~/.dsh/profiles/web/cordis.patch.yml` still has `- insert: ... better-sidebar ...` — delete it (a same-id duplicate mount makes the loader fail loudly with `duplicate loader entry id`). When an aggregate bundle (e.g. `@linxin666/dsh-web-ui-all`) mounts this package under a **different** id, the plugin's own bundle patch backs off automatically since 0.13.x (it detects an already-enabled mount of the same package name and does not mount itself) — no manual fix needed; if it still double-mounts, make sure the aggregate bundle precedes `dsh-better-sidebar` in `dsh.profile.bundles`. |
+| Terminal fails on Windows | `node-pty` relies on prebuilt binaries; if none match your Node version, install a build toolchain (VS Build Tools). Mainstream Node versions are usually covered. |
+| Terminal shows "node-pty failed to load" | The `node-pty` install is missing or broken (e.g. pnpm skipped its build script). The terminal banner shows a repair command — copy it into a terminal/cmd on the DSH machine and run it (in `~/.dsh/profiles/web`: `pnpm approve-builds --all && pnpm rebuild node-pty`), then restart DSH and click Retry. The plugin and DSH core share the same `node-pty@^1.1.0`, so the repair restores both. |
+| `dsh: command not found` | Install DSH first, or run `npx -y --package @deepseek-ai/dsh dsh plugin --profile web add dsh-better-sidebar@latest`. |
+
+</details>
+
+<details>
+<summary><b>Install from source / develop (optional — alternative to the npm flow)</b></summary>
+
+To debug local changes or track the dev branch, point the dependency at a local clone and build it yourself:
+
+```text
+1. git clone https://github.com/omdsh-dev/DSH-better-sidebar.git ~/Code/DSH-better-sidebar
+   cd ~/Code/DSH-better-sidebar && pnpm install && pnpm build
+2. In ~/.dsh/profiles/web/package.json dependencies write "dsh-better-sidebar": "link:<absolute path of the clone>"
+3. Append this mount line to ~/.dsh/profiles/web/cordis.patch.yml (to pick the terminal shell, add `config.shell`; `config.shellArgs` starts it with explicit args — when non-empty they replace the default `-l`. When omitted the host resolves `$SHELL` / the login shell / powershell.exe):
+   - insert:
+       - id: better-sidebar
+         name: 'dsh-better-sidebar'
+         config:
+           shell: /bin/zsh
+           shellArgs:
+             - --noprofile
+             - --no-rc
+4. Run pnpm install in ~/.dsh/profiles/web
+5. Restart DSH and hard-refresh
+```
+
+Update: `git pull && pnpm install && pnpm build` → just hard-refresh the browser (client changes hot-reload; only host-half changes need a DSH restart). To switch back to the npm channel, restore `"dsh-better-sidebar": "^0.15.0"` and re-run `pnpm install`.
+
+</details>
+
+<details>
+<summary><b>Install via plugin-registry (optional — use either this or the main flow)</b></summary>
+
+Prerequisite: DSH with [plugin-registry](https://github.com/dsh-external/plugin-registry) integrated (`dsh registry` available). **Enabling both channels double-mounts** (the Node half loads twice, the page gets two sidebars).
+
+```sh
+git clone https://github.com/omdsh-dev/DSH-better-sidebar.git && cd DSH-better-sidebar
+pnpm install && pnpm build
+node scripts/package-registry.mjs   # assemble the registry/ staging (manifest + artifacts + README, not committed)
+dsh registry install ./registry     # install (disabled by default)
+dsh registry enable dsh-external/dsh-better-sidebar
+```
+
+Update: `git pull && pnpm install && pnpm build` → `node scripts/package-registry.mjs` → `dsh registry uninstall/install/enable`. Remove the other channel's mount before switching.
+
+</details>
+
+## 🖼️ Feature Tour
+
+> Below are real UI screenshots.
+
+### 🗂️ File Workbench: Explorer
+
+Two explorer modes: embedded in the file preview / standalone file tree. Lazy-loading directory tree, symlinks classified by target kind (directory links expand, dangling links flagged), global filename search, file/folder upload buttons plus drag-drop upload, context menu (open in new tab / open to the side / copy paths), and a hover `@file` button that references a file straight into the composer.
+
+<div align="center"><img width="880" alt="File explorer" src="https://github.com/user-attachments/assets/a410bfd2-a8ba-43e6-873e-22417756e94d" /></div>
+<div align="center"><img width="880" alt="CodeMirror editor" src="https://github.com/user-attachments/assets/b44b488e-568c-4ee0-b96c-e9c906598a77" /></div>
+
+### 📝 Inline Preview: Markdown · Images · PDF
+
+The Markdown preview renders **Mermaid diagrams** (strict-mode safe rendering + a second sanitize pass; click a diagram for a zoom modal with wheel-zoom and drag-pan); images / PDFs display inline via the media route; the Office suite is covered by an ecosystem plugin.
+
+<div align="center"><img width="880" alt="Markdown + Mermaid preview" src="https://github.com/user-attachments/assets/fe0e5182-55bb-45cc-b98b-a2877c2bdd38" /></div>
+<div align="center"><img width="880" alt="Inline image preview" src="https://github.com/user-attachments/assets/f9a58c30-5b7a-48b5-9e22-37d7e071f593" /></div>
+
+### 💻 Real Terminal
+
+xterm.js + node-pty real shell (not an emulator): transcript replay on reconnect, configurable shell / shellArgs (settings page or `cordis.patch.yml`), and optional `terminal_*` model tools so the agent can open terminals and run commands itself.
+
+<div align="center"><img width="880" alt="Real terminal" src="https://github.com/user-attachments/assets/0dad6ad3-ff3f-4b5a-86d2-f832ce65323e" /></div>
+
+### 🌿 Git Panel
+
+Stage / unstage / commit (`Ctrl+Enter`) / revert, plus a history list; clicking a changed file opens a **VSCode-style diff tab** (line-level red/green).
+
+<div align="center"><img width="880" alt="Git panel" src="https://github.com/user-attachments/assets/e7fc1220-305f-4bca-8583-e77ab4f4fa78" /></div>
+
+### 🌐 Embedded Browser
+
+Multiple web tabs with back / forward / reload / address bar; content runs in an **opaque-origin sandboxed iframe** (live sandbox status in the UI, per-page temporary unlock available); external-link clicks in the chat can be taken over into the sidebar (protocol-based routing, configurable).
+
+<div align="center"><img width="880" alt="Embedded browser" src="https://github.com/user-attachments/assets/9bc6b65a-64fc-4942-a685-76e391e55606" /></div>
+
+### 🧩 Tasks: Agent Topology + Background Jobs
+
+Live subagent-tree topology (run states, batched live previews) plus the background-jobs list (exit codes / live output / force-kill); new subagents / jobs can auto-expand the sidebar (configurable).
+
+<div align="center"><img width="880" alt="Tasks: subagent topology" src="https://github.com/user-attachments/assets/dcd8ed2f-59fa-405b-937b-2d250f5034dd" /></div>
+
+### 💬 Side Chat (beta)
+
+Codex-style side threads: **one independent tab per conversation**; the thread inherits the parent's full context (including the in-progress turn, honestly frozen as "interrupted") and runs independently without polluting the main session; follow-ups survive restarts; one click promotes the thread to a top-level session.
+
+<div align="center"><img width="880" alt="Side Chat (beta)" src="https://github.com/user-attachments/assets/3a338c36-f5de-4000-95f3-4b1cd04f60fc" /></div>
+
+### 🪟 Dual Workbench: Sidebar + Bottom Panel + Split Panes
+
+The right sidebar and the bottom panel can stay open together; drag a tab to a pane edge to **split**, to the middle to **merge** (works across panels); panel width/height drag from the left/top edge; on mobile everything merges into a full-width drawer.
+
+<div align="center"><img width="880" alt="Dual workbench (right sidebar + bottom panel)" src="https://github.com/user-attachments/assets/dfdb875e-a1a8-4d4b-8340-353736b1708f" /></div>
+
+### ⚙️ Declarative Settings
+
+The "Side card" section in DSH settings: one small card per tab / viewer with an independent toggle (highlighted enabled state + brand switch); secondary settings open from the "Feature settings" strip at the card bottom (switch / text / number / select rows); plugin-owned settings persist under `pluginSettings`.
+
+<div align="center"><img width="880" alt="Declarative settings: side cards" src="https://github.com/user-attachments/assets/0800ca64-621e-48da-b7df-aecfddc3ec29" /></div>
+
+### 📱 Mobile
+
+On narrow screens (<768px) the panels become a full-width drawer: bottom-panel tabs merge into the sidebar once, with touch-friendly dragging.
+
+<div align="center"><img width="360" alt="Mobile full-width drawer" src="https://github.com/user-attachments/assets/a82ba78a-f4cf-4d85-80e8-050a05beb144" /></div>
+
+## 🌐 Plugin Ecosystem
+
+The `ctx.betterSidebar` service opens two extension points to every plugin: **`registerTab` (sidebar pages)** and **`registerFileViewer` (file previewers)**. The 7 built-in tabs + 6 viewers register through the exact same API — fully equal capabilities.
+
+```ts
+import type {} from 'dsh-better-sidebar'  // triggers the ctx.betterSidebar type merge
+export const inject = ['betterSidebar']
+export function apply(ctx: Context) {
+  ctx.effect(() => ctx.betterSidebar.registerTab({
+    id: 'my-plugin:db', title: 'Database', component: ({ scope }) => <DbView sessionId={scope.sessionId} />,
+  }))
+  ctx.effect(() => ctx.betterSidebar.registerFileViewer({
+    id: 'my-plugin:csv', exts: ['csv'], fetchStrategy: 'custom',
+    load: async (path, scope) => parseCsv(await fetchText(scope, path)),
+    component: ({ customData }) => <CsvGrid rows={customData} />,
+  }))
+}
+```
+
+The GitHub topic [`dsh-better-sidebar`](https://github.com/topics/dsh-better-sidebar) already hosts **28+ ecosystem plugins** (and growing):
+
+<div align="center">
+  <a href="https://github.com/user-attachments/assets/d4385b7e-aab4-425d-a5c4-2da5da81a34e"><img width="66%" alt="The built-in Add Plugins modal: recommended catalog + one-click install command" src="https://github.com/user-attachments/assets/d4385b7e-aab4-425d-a5c4-2da5da81a34e" /></a><br />
+  <i>The built-in "Add plugins" modal in settings: recommended catalog + one-click install command + a direct link to the GitHub topic</i>
+</div>
+
+### 📑 Tab Plugins (sidebar pages)
+
+<details>
+<summary><b>23 plugins (click to expand)</b></summary>
+
+| Plugin | ⭐ | Description |
+|---|---|---|
+| [ChenRuoT/dsh-sidebar-qa](https://github.com/ChenRuoT/dsh-sidebar-qa) | <img alt="stars" src="https://img.shields.io/github/stars/ChenRuoT/dsh-sidebar-qa?style=flat&color=4d6bfe" /> | Selection-based side Q&A — Codex-style side questions / Claude Code `/btw` |
+| [fuhefei/dsh-sentinel](https://github.com/fuhefei/dsh-sentinel) | <img alt="stars" src="https://img.shields.io/github/stars/fuhefei/dsh-sentinel?style=flat&color=4d6bfe" /> | Condition-driven wakeup: file / command / HTTP / process / webhook watches that wake the agent; dock + sidebar branch + global dashboard |
+| [jiuge2467/dsh-studio](https://github.com/jiuge2467/dsh-studio) | <img alt="stars" src="https://img.shields.io/github/stars/jiuge2467/dsh-studio?style=flat&color=4d6bfe" /> | Full-stack enhancement workbench: multi-source MCP visual debugging hub, visual thinking engine |
+| [Iwctwbh/dsh-flowglass](https://github.com/Iwctwbh/dsh-flowglass) | <img alt="stars" src="https://img.shields.io/github/stars/Iwctwbh/dsh-flowglass?style=flat&color=4d6bfe" /> | Flowglass: live session flowgraph (messages / tool groups / subagent branches) |
+| [FeatherHunter/dsh-mattpocock-skills-deck](https://github.com/FeatherHunter/dsh-mattpocock-skills-deck) | <img alt="stars" src="https://img.shields.io/github/stars/FeatherHunter/dsh-mattpocock-skills-deck?style=flat&color=4d6bfe" /> | Game-like mission system for mattpocock/skills: fog-of-war map + task bar |
+| [GULI-lab/DSH-element-source](https://github.com/GULI-lab/DSH-element-source) | <img alt="stars" src="https://img.shields.io/github/stars/GULI-lab/DSH-element-source?style=flat&color=4d6bfe" /> | Click any UI element on your dev page to jump to its Vue / React / Svelte / Angular source, straight into the chat |
+| [Lzh3070/dsh-file-review-tab](https://github.com/Lzh3070/dsh-file-review-tab) | <img alt="stars" src="https://img.shields.io/github/stars/Lzh3070/dsh-file-review-tab?style=flat&color=4d6bfe" /> | File-change review tab: line-level red/green diffs + undo + chat-line deep links |
+| [yq04/dsh-git-remotes](https://github.com/yq04/dsh-git-remotes) | <img alt="stars" src="https://img.shields.io/github/stars/yq04/dsh-git-remotes?style=flat&color=4d6bfe" /> | Git remotes tab: branches / upstream / ahead-behind, fetch with prune, ff-only pull, confirm-before-push |
+| [ztyhehe/dsh-better-sidebar-svn](https://github.com/ztyhehe/dsh-better-sidebar-svn) | <img alt="stars" src="https://img.shields.io/github/stars/ztyhehe/dsh-better-sidebar-svn?style=flat&color=4d6bfe" /> | SVN source-control tab: status / diff / log / commit / update / revert / conflict resolution — symmetric to the built-in Git panel |
+| [Melody-max114/dsh-excel-panel](https://github.com/Melody-max114/dsh-excel-panel) | <img alt="stars" src="https://img.shields.io/github/stars/Melody-max114/dsh-excel-panel?style=flat&color=4d6bfe" /> | Excel editing: xlsx preview/edit, live formula evaluation, merged cells, save back to the original file |
+| [v587d/dsh-anysearch-refs](https://github.com/v587d/dsh-anysearch-refs) | <img alt="stars" src="https://img.shields.io/github/stars/v587d/dsh-anysearch-refs?style=flat&color=4d6bfe" /> | AnySearch results as sidebar cards: query, source snippets, highlighted keywords |
+| [mlosun/dsh-docs-panel](https://github.com/mlosun/dsh-docs-panel) | <img alt="stars" src="https://img.shields.io/github/stars/mlosun/dsh-docs-panel?style=flat&color=4d6bfe" /> | Global docs panel: portable Markdown notes, readable from any workspace |
+| [lnyuqian/dsh-skill-sidebar](https://github.com/lnyuqian/dsh-skill-sidebar) | <img alt="stars" src="https://img.shields.io/github/stars/lnyuqian/dsh-skill-sidebar?style=flat&color=4d6bfe" /> | Skills panel: scans local skill directories, one-click invocation copy, pinning |
+| [g-yixuan/dsh-sidechat](https://github.com/g-yixuan/dsh-sidechat) | <img alt="stars" src="https://img.shields.io/github/stars/g-yixuan/dsh-sidechat?style=flat&color=4d6bfe" /> | Codex-style side chat + selection annotations (a thin consumer plugin) |
+| [thirsty5034/dsh-ssh-tunnel](https://github.com/thirsty5034/dsh-ssh-tunnel) | <img alt="stars" src="https://img.shields.io/github/stars/thirsty5034/dsh-ssh-tunnel?style=flat&color=4d6bfe" /> | Multi-host SSH tunnels + SSH manager tab |
+| [thirsty5034/dsh-git-forge](https://github.com/thirsty5034/dsh-git-forge) | <img alt="stars" src="https://img.shields.io/github/stars/thirsty5034/dsh-git-forge?style=flat&color=4d6bfe" /> | GitHub / Gitea accounts, project grants and push policy |
+| [YesSanSan/dsh-conversation-outline](https://github.com/YesSanSan/dsh-conversation-outline) | <img alt="stars" src="https://img.shields.io/github/stars/YesSanSan/dsh-conversation-outline?style=flat&color=4d6bfe" /> | Conversation outline tab: per-turn structure, quick jump, one-line LLM titles |
+| [Wulabalabo/dsh-sidebar-Explorer-Plus](https://github.com/Wulabalabo/dsh-sidebar-Explorer-Plus) | <img alt="stars" src="https://img.shields.io/github/stars/Wulabalabo/dsh-sidebar-Explorer-Plus?style=flat&color=4d6bfe" /> | File-manager tab: upload / move / delete / rename / new folder (write operations) |
+| [yq04/dsh-turn-review](https://github.com/yq04/dsh-turn-review) | <img alt="stars" src="https://img.shields.io/github/stars/yq04/dsh-turn-review?style=flat&color=4d6bfe" /> | Turn review: review agent changes turn by turn |
+| [Ghz114514/dsh-refpics](https://github.com/Ghz114514/dsh-refpics) | <img alt="stars" src="https://img.shields.io/github/stars/Ghz114514/dsh-refpics?style=flat&color=4d6bfe" /> | Pinterest-style reference-image search: masonry wall, sidebar board, downloads, save-to-Eagle |
+| [yzlin499/dsh-yzlin499-easy-plugins](https://github.com/yzlin499/dsh-yzlin499-easy-plugins) | <img alt="stars" src="https://img.shields.io/github/stars/yzlin499/dsh-yzlin499-easy-plugins?style=flat&color=4d6bfe" /> | A handy utility bundle for a bare-bones DSH |
+| [dong-victor/dsh-better-sidebar-starter](https://github.com/dong-victor/dsh-better-sidebar-starter) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-starter?style=flat&color=4d6bfe" /> | Run-configurations tab: IDEA-style Run/Debug configs (npm / springboot / python / custom) — one-click launch, history, WebSocket live logs (ANSI colors), parallel instances, cross-platform process-tree kill |
+| [baosfeng/my-dsh-plugins](https://github.com/baosfeng/my-dsh-plugins) | <img alt="stars" src="https://img.shields.io/github/stars/baosfeng/my-dsh-plugins?style=flat&color=4d6bfe" /> | Personal multi-plugin collection (`dsh-file-activity`): a sidebar file-activity tab recording read / added / modified history and stats, flat-browsed by folder, opened with the native preview |
+
+</details>
+
+### 🖼️ Viewer Plugins (file previewers)
+
+<details>
+<summary><b>3 plugins (click to expand)</b></summary>
+
+| Plugin | ⭐ | Description |
+|---|---|---|
+| [HuanLinOTO/dsh-plugin-better-sidebar-plugin-office](https://github.com/HuanLinOTO/dsh-plugin-better-sidebar-plugin-office) | <img alt="stars" src="https://img.shields.io/github/stars/HuanLinOTO/dsh-plugin-better-sidebar-plugin-office?style=flat&color=4d6bfe" /> | Office-suite preview (.docx / .xlsx / .pptx) as a separate bundle to slim the core (in the official recommended catalog) |
+| [zemul/dsh-video-preview](https://github.com/zemul/dsh-video-preview) | <img alt="stars" src="https://img.shields.io/github/stars/zemul/dsh-video-preview?style=flat&color=4d6bfe" /> | Inline video preview: .mp4 / .webm / .mov / .mkv / .avi with a /video host route supporting HTTP Range scrubbing |
+| [dong-victor/dsh-better-sidebar-jupyter](https://github.com/dong-victor/dsh-better-sidebar-jupyter) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-jupyter?style=flat&color=4d6bfe" /> | Runnable `.ipynb` notebook view: lazy-start Python kernel, streaming outputs, save-back |
+
+</details>
+
+### 🧰 Enhancements & Tools
+
+<details>
+<summary><b>2 plugins (click to expand)</b></summary>
+
+| Plugin | ⭐ | Description |
+|---|---|---|
+| [dong-victor/dsh-better-sidebar-terminal-plus](https://github.com/dong-victor/dsh-better-sidebar-terminal-plus) | <img alt="stars" src="https://img.shields.io/github/stars/dong-victor/dsh-better-sidebar-terminal-plus?style=flat&color=4d6bfe" /> | Terminal enhancement: bundled Nerd Font icons, xterm glyph fixes, stable terminal cwd |
+| [Max-Null/dsh-sidebar-preview-select](https://github.com/Max-Null/dsh-sidebar-preview-select) | <img alt="stars" src="https://img.shields.io/github/stars/Max-Null/dsh-sidebar-preview-select?style=flat&color=4d6bfe" /> | Preview selection boost: select text in any sidebar preview → floating "send to session" |
+
+</details>
+
+> 📣 **List your plugin**: tag your repo with the `dsh-better-sidebar` topic to appear on the [topic page](https://github.com/topics/dsh-better-sidebar); then PR one `PluginEntry` into [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts) / [`src/client/plugins-viewers.ts`](./src/client/plugins-viewers.ts) to join the built-in recommended catalog (data integrity is guarded by `tests/plugin-list.spec.ts`).
+
+## 🆕 Recent Updates
+
+<div align="center">
+  <a href="https://github.com/user-attachments/assets/d2aea86b-a776-4f01-a6b8-b26b27314336"><img width="33%" alt="Sidebar" src="https://github.com/user-attachments/assets/d2aea86b-a776-4f01-a6b8-b26b27314336" /></a>
+  <a href="https://github.com/user-attachments/assets/946f7028-4967-461e-a750-d1b5056b62d0"><img width="33%" alt="Service API base screenshot" src="https://github.com/user-attachments/assets/946f7028-4967-461e-a750-d1b5056b62d0" /></a>
+</div>
+
+**Supported DSH versions**: <a href="https://www.npmjs.com/package/@deepseek-ai/dsh?activeTab=versions"><img alt="Supported DSH versions: 0.1.0-rc.8 · 0.1.1-rc.1 · 0.1.1-rc.2" src="https://img.shields.io/badge/DSH-0.1.0--rc.8_%C2%B7_0.1.1--rc.1_%C2%B7_0.1.1--rc.2-4d6bfe" /></a> · full release history on the [Releases](https://github.com/omdsh-dev/DSH-better-sidebar/releases) page
+
+### v0.15.1
+
+All changes since v0.15.0:
+
+**✨ New features**
+
+- 💬 **Codex-style transcript rework for Side Chat** ([#314](https://github.com/omdsh-dev/DSH-better-sidebar/pull/314)): transcript rows became **collapsible** — tool calls, thinking and context injections share one quiet single-line chrome (chevron + label + one-line argument summary) that expands into an indented body on a hairline thread, no cards or fills; streaming labels and a creating hero shimmer (shimmer = generating), failed tools go danger, `prefers-reduced-motion` stills every loop; **the first question is no longer swallowed by the boundary prompt** — context injection and first contact are delivered as separate events (boundary + parked snapshot ride `agent.inject`, the question wakes the driver), so the transcript maps injections onto a collapsible injection row while genuine user messages — the first one included — render as user bubbles; legacy threads' first message is split out into its own bubble too
+- 📖 **README rewrite**: feature tour (real UI screenshots per feature), user-facing DSH compatibility badges, simplified install (`add` → `approve-builds` → `add`, node-pty-safe build, paste-to-DSH install prompt), 28+ plugin ecosystem with per-category collapsed listings
+
+**🐛 Fixes**
+
+- 🖥️ **Terminal pty stays alive across conversation switches** ([#323](https://github.com/omdsh-dev/DSH-better-sidebar/pull/323)): switching sessions is no longer treated as a transient drop — the client sends a `park` control frame on unmount and the host skips the 30s reconnect-grace countdown; switching back (`open()` cancels parked) or explicitly closing the tab resumes the normal lifecycle; agent terminals keep their indefinite lifetime
+- 📂 **File-tree upload overlay no longer intercepts Tab drags** ([#317](https://github.com/omdsh-dev/DSH-better-sidebar/pull/317)): dragging tabs (reorder / cross-pane split) across the explorer no longer shows the upload overlay or swallows the event — gated on `dataTransfer.types` containing `Files` (consistent with the panel-host shield), so tabs land normally; OS file drags behave as before
+- 💬 **Subagent auto-open debounced** ([#314](https://github.com/omdsh-dev/DSH-better-sidebar/pull/314)): Side Chat thread creation no longer pops the task page — the 0→N trigger rearms for 500ms and re-evaluates the original baseline against the live snapshot, by which time the title filter recognizes the thread; genuine subagents still auto-open
+
+### v0.15.0
+
+All changes since v0.14.0:
+
+**✨ New features**
+
+- 💬 **Side Chat (beta) tab** ([#286](https://github.com/omdsh-dev/DSH-better-sidebar/pull/286)): Codex-style side threads, **one independent tab per conversation** — the child inherits the parent's full context (completed turns + pending messages + the in-progress turn's assistant output and tool activity, honestly frozen with an "interrupted" marker); created with an identical composition (same preset / provider / model) so the first request reuses the parent's input prefix cache; threads stay invisible in the main session list with zero subagent-catalog noise; follow-ups survive DSH restarts (auto cold-resume); one-click "Save as new session" promotes the thread to a top-level session ([design](docs/plans/2026-08-20-sidechat-tab-design.md))
+- 📤 **Upload into the files window** ([#239](https://github.com/omdsh-dev/DSH-better-sidebar/pull/239)): header "upload file / upload folder" buttons plus drag-drop (drop on the tree body = workspace root, on a directory row = that directory, on a file row = its parent directory, VSCode semantics); full-window blurred progress overlay while uploading (per-file progress + cancel / Esc); buttons disabled while busy, tree refreshes after the upload settles
+- 🧩 **Desktop compatibility in four options** ([#284](https://github.com/omdsh-dev/DSH-better-sidebar/pull/284)): "Position compatibility mode" is now a main-row dropdown — **Auto-detect** (default, conservative: only the standard Window Controls Overlay geometry contributes; real 32/36px caption-overlay heights per shell, live on maximize/restore; zero modification on plain web) / **DSH official web** (explicitly no adaptation) / **Shell preset** (built-in, opt-in; only shells that appeared in this repo's issues/PRs with 100+ stars, "detected" badge when the environment matches) / **Custom** (free-form CSS + shift distance). Documents that already carried compatibility values migrate to the custom scheme; interactive chrome opts out of desktop drag regions (`no-drag`); the bottom-push anchor is a composite selector (`[data-pane]` and `:has(> [data-slot])`)
+- 🎛️ **Settings page UI/UX modernization** ([#300](https://github.com/omdsh-dev/DSH-better-sidebar/pull/300)): the side-card secondary-settings entry is now a full-width "Feature settings" strip at the card bottom (replacing the invisible corner gear — much easier to discover); coordinated two-tone enabled state (brand activation accent + success-green check badge); every color is still `--dsw-alias-*` token-derived so skins follow automatically
+- ➕ **New entries in the recommended-plugin catalog**: `dsh-docs-panel` (global docs, [#230](https://github.com/omdsh-dev/DSH-better-sidebar/pull/230)), `dsh-flowglass` ([#261](https://github.com/omdsh-dev/DSH-better-sidebar/pull/261)), `dsh-git-forge` and `dsh-ssh-tunnel` ([#204](https://github.com/omdsh-dev/DSH-better-sidebar/pull/204)), `dsh-turn-review` ([#102](https://github.com/omdsh-dev/DSH-better-sidebar/pull/102))
+
+**🐛 Fixes**
+
+- ⚡ **Batched live preview for the subagent page** ([#298](https://github.com/omdsh-dev/DSH-better-sidebar/pull/298)): the old implementation polled `subagents.history` per running subagent, each poll triggering a full host-side enumeration — an O(N²) amplification that stalled the page with many concurrent subagents; now a single batch route `subagents.live` (one enumeration of the whole tree) plus one client poller with a single in-flight request; display logic and copy unchanged
+- 🖱️ **Interrupted / fast-release drags no longer roll back** ([#249](https://github.com/omdsh-dev/DSH-better-sidebar/pull/249), closes [#247](https://github.com/omdsh-dev/DSH-better-sidebar/issues/247) [#248](https://github.com/omdsh-dev/DSH-better-sidebar/issues/248)): interrupted or fast-released drags commit the last known position; HMR re-activation re-locates the center column (fixes the blank bottom panel after a hot reload)
+- 📐 **Push variables stay effective while mounted** ([#259](https://github.com/omdsh-dev/DSH-better-sidebar/pull/259), fixes [#258](https://github.com/omdsh-dev/DSH-better-sidebar/issues/258)): the bottom panel no longer flashes full-width after a drag is released
+- 🔧 **Adapted to DSH 0.1.1-rc.1 / rc.2 (@next)** ([#297](https://github.com/omdsh-dev/DSH-better-sidebar/pull/297) [#305](https://github.com/omdsh-dev/DSH-better-sidebar/pull/305)): no code changes needed
+- 🔒 **Upload-chain hardening** ([#239](https://github.com/omdsh-dev/DSH-better-sidebar/pull/239)): empty and absolute `relativePath` segments are refused outright; uniquely named temp files (concurrent uploads stay independent, crashed processes never block later uploads); write-stream error listeners (a failing disk can no longer crash the host); client error codes unified with the wire (`too-large`), 413s localized
+
+<details>
+<summary><b>Older releases (v0.12.0 – v0.14.0)</b></summary>
+
+### v0.14.0
+
+> ⚠️ This release requires DSH ≥ 0.1.0-rc.8. All changes since v0.13.1:
+
+**✨ New features**
+
+- 🖼️ **Unified panel-host injection refactor** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): panels/toggle clusters moved into a `[data-dsh-panel-host]` fixed containing block (`fixed inset-0 z-40`), immune to desktop-shell intermediate transforms hijacking `fixed`; mount self-check (page-level transform → `data-dsh-panel-host-degraded` degraded sync, judged on uncorrected geometry, exits only when the ancestor transform is gone); push anchor switched to `#root [data-dsh-frame] > [data-pane="conversation"]` + `#root` calc width against desktop-shell additive overflow; chunk revalidation on activation (HEAD+ETag keeps unchanged chunks, 5s timeout fails open); `visualViewport` keyboard inset + `env(safe-area-inset-*)` mobile adaptation
+- 📂 **Separate file windows by default** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): `editorExplorer` now defaults to **separate** — tree clicks / file opens create a new tab per path and the path-less window is a pure file manager; merged mode stays available as an opt-in
+- 🖥️ **Terminal shell / shellArgs configurable from the settings page** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): the terminal card's gear popup gains "Shell path" and "Shell arguments" rows (previously yaml-only via `cordis.patch.yml`) — saved values take effect immediately for terminals opened afterwards (UI terminals and model `terminal_create` alike); empty keeps the existing yaml → `$SHELL` / login shell / `powershell.exe` resolution order
+- 🏷️ **Version badge on the settings page** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): the side-card settings section now opens with a `DSH-better-sidebar v0.14.0` identity badge (version synced with the service instance, test-guarded)
+- 🔍 **Add-plugin catalog: search / grouping / independent scroll** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): built for a growing plugin ecosystem — a live search box (filters by name / id / description), optional `category` grouping for entries, and an independently scrolling list (the modal no longer grows unbounded with catalog size)
+
+**🐛 Fixes**
+
+- 🧩 **rc.8 module-system migration** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): rc.8 no longer exposes the `window.__DSH_MODULES__` page global (it moved to the `ctx.modules` service), which broke every lazy chunk's externals resolution — the client now injects the `modules` service and shares it with chunk-bundle copies through a plugin-owned global (terminal / editor / Mermaid on-demand loading restored)
+- 🧩 **Chunk revalidation barrier hardening** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): HEAD revalidation gains a 5s timeout (fails open on a stuck route so the barrier can never wedge lazy loads); `resetChunks` clears a pending revalidation barrier
+- 🖱️ **Drag robustness** ([#232](https://github.com/omdsh-dev/DSH-better-sidebar/pull/232)): fast releases (browsers merge/lose pointermove bursts) commit the last known dragged position instead of rolling back; `pointercancel` / lost-capture interruptions keep the drag result too; the center column is re-measured right after commit (no mid-frame bottom-panel width jump); HMR re-activation re-locates the center column via an `<html>` style observer plus a retry when the bottom panel opens (fixes the blank bottom panel / shifted input bar after a hot reload)
+
+### v0.13.1
+
+**✨ New features**
+
+- 📊 **Safe Mermaid rendering in the Markdown preview** ([#164](https://github.com/omdsh-dev/DSH-better-sidebar/pull/164)): when a previewed md file contains mermaid fences, a `client-mermaid.js` chunk (~7MB) is served on demand (zero load without mermaid); defense-in-depth rendering — `securityLevel: 'strict'` + `htmlLabels: false` (node labels use real SVG `<text>`) + a second sanitize pass before SVG injection (foreignObject/script/foreign HTML elements removed, `@*`/`on*`/`href` attributes stripped); click a diagram to zoom in a modal overlay (wheel zoom centered on the cursor, drag pan, toolbar & shortcuts), re-renders with light/dark theme, falls back to the raw code block on parse failure
+- 🖥️ **Configurable terminal shell & shellArgs** ([#125](https://github.com/omdsh-dev/DSH-better-sidebar/pull/125)): `cordis.patch.yml` `better-sidebar.config` can set `shell` / `shellArgs` (a non-empty `shellArgs` fully replaces the defaults; unset keeps the previous auto-resolution of `$SHELL` / login shell / `powershell.exe`), applied to both UI terminals and agent terminals (`terminal_create`); terminal tab titles now show the shell name (bash/zsh/powershell) and internal tab ids use UUIDs so the same shell can open multiple terminals
+
+**🐛 Fixes**
+
+- 🔗 **Aggregate double-mount auto-yield** ([#200](https://github.com/omdsh-dev/DSH-better-sidebar/pull/200)): when an aggregate package (e.g. dsh-web-ui-all) mounts the same package under its own entry id, the guard expression in `cordis.patch.yml` disables the plugin's own `better-sidebar` row so `/sidebar/api` is no longer registered twice (`duplicate prefix route` crashing the whole plugin tree / `dsh web`); standalone installs behave as before
+- 🔧 **Adapted to DSH 0.1.0-rc.7** ([#207](https://github.com/omdsh-dev/DSH-better-sidebar/pull/207), fixes [#206](https://github.com/omdsh-dev/DSH-better-sidebar/issues/206)): fixes the `agent-presets: refusing to compose an unscoped context` error when picking a model / sending a message after DSH moved to rc.7
+
+### v0.13.0
+
+**✨ New features**
+
+- 📁 **Files window merged with the explorer** ([#151](https://github.com/omdsh-dev/DSH-better-sidebar/pull/151)): new `editorExplorer` setting (editor card gear) — file tabs gain a path-input header plus a toggleable right-docked file tree (per-tab open/width memory, drag-resize 160–480px from the left edge, global filename search via the host `fs.search` route with a hard budget, skipping `.git` and symlink dirs); in separate mode (default) tree clicks / Enter in the path input open each file **in its own new tab**, merged mode switches the current tab **in place**; fresh sessions seed an empty Files window instead of the explorer tab, and a path-less window is a bare file manager in separate mode / a chrome'd empty file window in merged mode; the tree context menu offers "Open in new tab" and "Open to the side" (split)
+- 🎛️ **Select rows for declarative settings** ([#151](https://github.com/omdsh-dev/DSH-better-sidebar/pull/151)): settings rows gain `type: 'select'` (`options` with value/title/desc/icon, `multi` stores the picked values as an array); options with icons render big-icon option cards and keep the icon in the closed anchor; `editorExplorer` became an iconed select (merged vs separate); the capability list gained `settingSelect`
+- 🔀 **Mutual exclusion with the dsh-web-ui family right panel** ([#181](https://github.com/omdsh-dev/DSH-better-sidebar/pull/181)): reads the `aionui-panel` settings namespace's provider choice — when "Use aionui-panel" is selected, the whole better-sidebar (right sidebar / bottom panel / floating entry / all takeovers) does not mount; with DSH-better-sidebar (or no aionui installed) it behaves as before. Takes effect live after a settings save (settings-document push), no reload needed
+
+### v0.12.3
+
+**✨ New features**
+
+- 🎨 **Skin compatibility (token-driven)**: fully consumes DSH design tokens and follows the dsh-web-ui skin center's 10 skins automatically; terminal/editor surfaces fall back to opaque backgrounds under transparent/translucent-glass token values so text never scrolls over the skin art ([#110](https://github.com/omdsh-dev/DSH-better-sidebar/pull/110), fixes #106 #105 #90 #60, also #52 #57 #92)
+- 🗂️ **Unified path handling**: UNC / symlink classification (directory symlinks expandable, broken links highlighted) + HTML-route platform guards ([#134](https://github.com/omdsh-dev/DSH-better-sidebar/pull/134), #65 #67 #43 #79 #115)
+- 🖥️ **Configurable terminal shell**: custom shell setting with Windows pwsh auto-probe ([#95](https://github.com/omdsh-dev/DSH-better-sidebar/pull/95))
+- 📝 **Editor languages**: C# / Kotlin / Swift syntax highlighting ([#120](https://github.com/omdsh-dev/DSH-better-sidebar/pull/120))
+- 🧭 **Settings nav icon**: settings-page navigation icon and layout polish ([#114](https://github.com/omdsh-dev/DSH-better-sidebar/pull/114))
+- ➕ **Recommended-plugin catalog**: added `dsh-git-remotes` — Git Remotes tab (branches/upstream/ahead-behind, fetch with prune, ff-only pull, confirm-before-push; does not replace the built-in stage/commit tab) ([#91](https://github.com/omdsh-dev/DSH-better-sidebar/pull/91)); and `dsh-video-preview` — inline video preview (.mp4/.webm/.mov/.mkv/.avi etc.) backed by a /video host route with HTTP Range (206) scrubbing, not capped by the 20MB mediaLimit ([#126](https://github.com/omdsh-dev/DSH-better-sidebar/pull/126))
+
+**🐛 Fixes**
+
+- 🔧 **xterm migration**: deprecated xterm dependency migrated to `@xterm/xterm` (Closes [#122](https://github.com/omdsh-dev/DSH-better-sidebar/issues/122), [#128](https://github.com/omdsh-dev/DSH-better-sidebar/pull/128))
+- 📝 **Markdown editor**: selection-to-conversation popup restored ([#24](https://github.com/omdsh-dev/DSH-better-sidebar/pull/24))
+- 🐛 **node-pty load failure no longer crashes the server** ([#140](https://github.com/omdsh-dev/DSH-better-sidebar/issues/140)): the host half now lazy-loads node-pty — when it is missing the plugin still mounts, the terminal shows a repair banner (copyable command + Retry button), and agent terminal tools are skipped
+- 🧪 Test engineering: unit spec split (#141) + flaky smoke cleanup fix
+
+</details>
+
+## ⌨️ Keyboard Shortcuts
+
+| Action | Keys |
+|---|---|
+| Save edits | `Ctrl/Cmd + S` |
+| Git commit | `Ctrl + Enter` |
+| Close tab | Middle mouse button |
+| Split / merge panes | Drag tab to pane edge / middle |
+| Reference file to input | Hover the `@file` button at end of line |
+| Copy file path | Right-click row → copy relative/absolute path |
+
+## 🔌 Service API
+
+Since v0.4.0 the plugin exposes the `ctx.betterSidebar` service — other plugins can register sidebar pages and file viewers (the 7 built-in tabs + 6 viewers register through the same service). v0.12.1 completed the base capabilities (complete type exports, capability detection, state subscription, tab badges, lifecycle callbacks, targeted open, plugin-owned settings, etc.).
+
+Full integration docs:
+- **[`AGENTS.md`](./AGENTS.md)** — the in-repo integration doc (full fields, matching algorithm, HMR pitfalls, declarative settings, version detection);
+- **[`docs/external-plugin-guide.md`](./docs/external-plugin-guide.md)** — the external-plugin guide (with a complete minimal example).
+
+### ➕ Add Plugins (recommended plugin catalog)
+
+The dashed cards at the end of the "Sidebar content" / "File viewers" grids in the "Side Cards" settings section open the **Add tab plugins** / **Add preview plugins** modals: each declares its open extension point, offers a "**Browse more plugins on GitHub**" button (the [GitHub topic `dsh-better-sidebar`](https://github.com/topics/dsh-better-sidebar)), and lists the recommended catalog (name / repo / description / install script) — "**Open**" jumps to the repo, "**Copy**" writes the install command to the clipboard.
+
+**Curating a new plugin**: append a `PluginEntry` to [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts) (tab registrations) or [`src/client/plugins-viewers.ts`](./src/client/plugins-viewers.ts) (file-previewer registrations) and tag your repo with the `dsh-better-sidebar` topic; data integrity is guarded by `tests/plugin-list.spec.ts`.
+
+## 🛠️ Development & Build
+
+```sh
+pnpm install      # @deepseek-ai/* devDependencies resolve to 0.1.1-rc.1 (published) — no token needed
+pnpm typecheck    # tsc --noEmit
+pnpm build        # → lib/index.js + lib/invariant.js + lib/client.js + lib/client-registry.js + lib/types
+pnpm test         # vitest (includes manifest consistency guard; build first)
+pnpm watch        # tsdown --watch
+```
+
+**Architecture**: a single npm package with host/client halves — host (`src/index.ts`): `/sidebar/api/*` JSON API, `/sidebar/file` media route, `/sidebar/html` preview route, `/sidebar/ws/terminal` WebSocket (fs / git / pty / preview, all session-scoped with a trust fence); client (`src/client/index.tsx`): portal sidebar + views + interception; state persisted per session in localStorage. Organized per DSH official conventions (no default export, dual client bundles); no dependency on npm / checkout at runtime (`@deepseek-ai/*` provided by the web profile).
+
+## 🔐 Security
+
+- Routes protected by a Host-header trust fence (same as `/api`); `fs.write` is atomic; media/preview routes only serve files inside the session cwd; git only shells out to the CLI and never sets identity
+- HTML preview and browser tab content render in **opaque-origin sandboxed iframes** (no `allow-same-origin`/`allow-top-navigation`, `no-referrer`, all permission policies disabled); the `/sidebar/html` route carries a CSP `sandbox` + size/path bounds; the address bar rejects `javascript:`/`data:`/`file:` and local addresses like localhost
+- The UI shows the sandbox status live (red warning when off) and can temporarily unlock the current page; the settings page can disable the sandbox per feature (disabled by default, with a warning) — when off, content shares the origin with the UI; only recommended for fully trusted content
+
+## ⚠️ Known Limitations
+
+- Git has no push/pull/fetch; no file watcher (manual refresh); tool inline file-open buttons cannot be intercepted
+- Dragging a terminal tab to another pane remounts it (shell restarts)
+- Office-suite preview (.docx/.xlsx/.pptx) moved to the recommended office plugin (see the "Add plugins" modals in settings); without it these files fall through to the code/download fallbacks
+- Browser sandbox has no login state / third-party cookies are restricted; some sites need popup login; sites that refuse embedding via `X-Frame-Options`/`frame-ancestors` (e.g. arxiv.org) show a reason panel (with "Open in browser"); in-iframe navigation does not enter the back stack
+- HTML preview renders the saved file (not unsaved drafts)
+- No bottom panel on mobile (<768px): on narrow screens its tabs merge into the right sidebar once (after migrating back to desktop they stay in the right sidebar); the desktop bottom panel is only available on wide viewports; auto-open terminal on first bottom-panel expand does not trigger on mobile
+
+## 🖥️ Platform Support
+
+Windows / Linux / macOS (macOS validated daily; the rest covered by unit tests); `node-pty` prefers prebuilt binaries, otherwise a build toolchain is required (Windows VS Build Tools / Linux make+g+++python3 / macOS Xcode CLT).
+
+## 💬 Community
+
+WeChat / QQ group QR codes will live here. After uploading the QR images (drag them into any issue/comment to get a `user-attachments` link), replace `src` below and uncomment:
+
+<div align="center">
+  <!-- WeChat group QR code
+  <img width="220" alt="WeChat group QR code" src="https://github.com/user-attachments/assets/REPLACE_ME" />
+  -->
+  <!-- QQ group QR code
+  <img width="220" alt="QQ group QR code" src="https://github.com/user-attachments/assets/REPLACE_ME" />
+  -->
+</div>
+
+## 🤝 Contributing
+
+- **Code changes go through PRs**: develop on a `feat/*` / `fix/*` branch, then `gh pr create`; docs-only changes may be pushed to main directly
+- **Curate an ecosystem plugin**: tag your repo with `dsh-better-sidebar` + PR a `PluginEntry` into [`src/client/plugins-tabs.ts`](./src/client/plugins-tabs.ts) / [`plugins-viewers.ts`](./src/client/plugins-viewers.ts)
+- **Before submitting**: `pnpm typecheck && pnpm build && pnpm test` (CI additionally gates on npm-pack → real-mount → headless-render via `pnpm test:mount`)
+- See [`AGENTS.md`](./AGENTS.md) for the repository rules (hard constraints, CI lanes, release flow)
+
+## ⭐ Star History
+
+<a href="https://star-history.com/#omdsh-dev/DSH-better-sidebar&Date">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=omdsh-dev/DSH-better-sidebar&type=Date&theme=dark" />
+    <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=omdsh-dev/DSH-better-sidebar&type=Date" />
+  </picture>
+</a>
+
+## 👥 Contributors
+
+Thanks to everyone who contributed:
+
+<a href="https://github.com/omdsh-dev/DSH-better-sidebar/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=omdsh-dev/DSH-better-sidebar" alt="Contributors" />
+</a>
+
+## 🔗 Friends
+
+- [dsh-tianshu-tui](https://github.com/huiliyi37/dsh-tianshu-tui): an interactive terminal UI plugin for DeepSeek Harness (its rendering core evolved from the self-developed harness agent Tianshu-Tui), adding TDD and evidence-gate workflows on top of the official harness
+- [dsh-TUI](https://github.com/ccch1mneyyy/dsh-TUI): a Claude Code-style fullscreen interactive TUI plugin — pixel-whale top bar, live working-status row, streaming thought expansion, double-Esc rollback, context progress bar + TPS meter; one-command npm install
+- [dshfind Plugin Market](https://dshfind.com/zh/plugins): a third-party plugin marketplace — a listing of public repos under the GitHub topic `dsh-plugin`, with stars, contributors and growth data synced daily
+- [DeepSeek Harness Desktop](https://github.com/anywhere-labs/deepseek-harness-desktop): a modern desktop client for the DeepSeek Harness ecosystem — start and manage a local Harness service without configuring Node.js or running commands; [official site](https://www.dshdesktop.cn)
+
+---
+
+<div align="center">
+  <sub>MIT License · Built for the <a href="https://github.com/deepseek-ai/deepseek-harness">DeepSeek Harness</a> ecosystem · discover more on the <a href="https://github.com/topics/dsh-better-sidebar">dsh-better-sidebar topic</a></sub>
+</div>

cordis.patch.yml

@@ -0,0 +1,49 @@
+# dsh-better-sidebar bundle patch
+#
+# This file is the `dsh.bundle.patch` layer of the published npm package: when
+# the plugin is installed through the official CLI —
+#
+#   dsh plugin --profile <name> add dsh-better-sidebar@<version>
+#
+# — the command reconciles `dsh.profile.bundles` against installed packages
+# and, seeing this declaration, appends `dsh-better-sidebar` to the bundle
+# stack. The profile boot then merges THIS patch (a single `insert` of the
+# plugin row) exactly like the manual cordis.patch.yml mount line used
+# before. No profile file edits needed — one command installs and mounts.
+#
+# If the profile still carries the old manual mount line in its own
+# cordis.patch.yml, remove it before switching to the bundle channel to
+# avoid double-mounting (two Node halves, two sidebars).
+#
+# To choose the terminal shell, add `config.shell` to the inserted plugin
+# row (or to the profile's manual cordis.patch.yml mount line). When omitted,
+# the host keeps resolving $SHELL / the login shell / powershell.exe.
+# `config.shellArgs` optionally supplies explicit startup arguments; when
+# non-empty they replace the automatic POSIX `-l` login flag:
+#
+#   - insert:
+#       - id: better-sidebar
+#         name: 'dsh-better-sidebar'
+#         config:
+#           shell: /bin/zsh
+#           shellArgs:
+#             - --noprofile
+#             - --no-rc
+#
+# Aggregate double-mount guard: aggregate bundles (e.g. @linxin666/dsh-web-ui-all)
+# may already mount this package under their own entry id (e.g.
+# `web-ui-better-sidebar`). Two mounts register /sidebar/api twice and fail the
+# whole plugin tree at boot ("duplicate prefix route"). The `!!js` disabled
+# expression backs THIS row off when another *enabled* entry already mounts
+# `dsh-better-sidebar`; the aggregate instance then owns the sidebar. The
+# loader evaluates it when this row is processed (entry-list order, only rows
+# before this one are visible), so the aggregate bundle must precede this one
+# in `dsh.profile.bundles` — the standard install order, since `dsh plugin add`
+# appends new bundles last. The reverse order (this bundle before the
+# aggregate) is a known limitation: the guard cannot see rows that come after
+# it, and no runtime singleton guard is added. Same-id manual duplicates still
+# fail loudly at the loader as before.
+- insert:
+    - id: better-sidebar
+      name: 'dsh-better-sidebar'
+      disabled: !!js "[...ctx.loader.entries()].some((e) => e.options.name === 'dsh-better-sidebar' && e.options.id !== 'better-sidebar' && !e.disabled)"

docs/external-plugin-guide.md

@@ -2,8 +2,8 @@
 
 > 面向 **消费插件开发者**：如何让你的插件向 better-sidebar 注册新的侧边栏页面（tab）和文件类型预览器。
 >
-> 适用版本：**v0.4.0+**（`ctx.betterSidebar` 服务）；声明式设置部分需要 **v0.4.1+**。当前版本 v0.4.3。
-> 权威代码：`src/client/service.ts`（服务实现）、`src/client/builtins/`（内置 6 tab + 8 viewer 参考实现）、`lib/types/client/service.d.ts`（类型声明）。
+> 适用版本：**v0.4.0+**（`ctx.betterSidebar` 服务）；声明式设置 **v0.4.1+**；text/number 设置行 **v0.11.0+**；本文档其余新 API（badge/生命周期/定向打开/插件设置/版本探测等）**v0.12.0+**。当前版本 v0.12.0。
+> 权威代码：`src/client/service.ts`（服务实现）、`src/client/builtins/`（内置 7 tab + 9 viewer 参考实现）、`lib/types/client/service.d.ts`（类型声明）。
 
 ---
 
@@ -14,7 +14,7 @@ better-sidebar 从 v0.4.0 起把自己改造成一个**注册表服务**：
 - **新页面（tab）**：注册一种新的侧边栏 tab 类型，出现在侧边栏 `+` 菜单里，用户点击后在自己的分栏里打开你的 React 页面；
 - **文件预览器（file viewer）**：注册一种文件类型预览器，让用户在侧边栏打开文件时走你的渲染组件（覆盖或补充内置的 image/pdf/code 等）。
 
-内置的 6 个 tab（explorer / git / subagent / terminal / editor / diff）和 8 个 viewer（image / pdf / docx / xlsx / pptx / markdown / code / binary-download）**自己也是通过同一套 API 注册的**（吃自己的狗粮），所以外部插件的能力与内置功能完全对等。
+内置的 7 个 tab（explorer / git / subagent / terminal / browser / editor / diff）和 6 个 viewer（image / pdf / markdown / html / code / binary-download）**自己也是通过同一套 API 注册的**（吃自己的狗粮），所以外部插件的能力与内置功能完全对等。
 
 关键机制一句话：better-sidebar 的 client half 在 `apply()` 开头执行 `ctx.provide('betterSidebar', service)`（`src/client/index.tsx`），消费插件在 `inject` 里声明 `'betterSidebar'`，Cordis 保证服务就绪后才激活你的插件，然后你调用 `ctx.betterSidebar.registerTab(...)` / `registerFileViewer(...)` 完成注册，返回的 disposer 由 Cordis fiber 在卸载（HMR / 禁用）时自动调用。
 
@@ -32,7 +32,7 @@ better-sidebar 从 v0.4.0 起把自己改造成一个**注册表服务**：
 import type {} from 'dsh-better-sidebar'  // 触发 declare module 'cordis' 类型合并
 ```
 
-这个 **type-only import** 在编译时被擦除，不产生任何运行时依赖，也不会触发构建纯度门（见 §9）。
+这个 **type-only import** 在编译时被擦除，不产生任何运行时依赖，也不会触发构建纯度门（见 §10）。
 
 ### 2.2 package.json 声明
 
@@ -40,7 +40,7 @@ import type {} from 'dsh-better-sidebar'  // 触发 declare module 'cordis' 类
 {
   "name": "my-plugin",
   "peerDependencies": {
-    "cordis": "^4.0.0-rc.7",
+    "cordis": "^4.0.0-rc.8",
     "dsh-better-sidebar": "workspace:*"
   },
   "peerDependenciesMeta": {
@@ -69,6 +69,17 @@ import type {
 import type { TabDescriptor } from 'dsh-better-sidebar/client/service'  // 别名 ./client/api
 ```
 
+v0.12.0 起，服务模块还 re-export 了完整的状态词汇表，消费者可以直接命名（不再只能靠推断）：
+
+```ts
+import type {
+  SidebarTab, SidebarState, SidebarStore, SidebarSnapshot, SidebarDiffRef, TabType,
+  SessionScope, SidebarPrefs, OpenTabSeed, SidebarSettingsRenderProps,
+} from 'dsh-better-sidebar/client/service'
+```
+
+> 💡 **类型合并触发路径**：`import type {} from 'dsh-better-sidebar/client/service'` 同样会加载 `Context` 的 augmentation（`declare module 'cordis'` 在 context-types.d.ts 中）——**纯浏览器侧插件建议走 `client/service` 路径**，避免拉进宿主半的 Node 类型图（主入口 `dsh-better-sidebar` 的声明面含宿主代码；宿主消费者本就处于 Node 环境则无所谓）。client 可达声明图（`client/*` + context-types + html-route + prefs-shared）自 v0.12.0 起**零 Node 依赖**（`scripts/check-consumer-types.sh` 守护），没有 `@types/node`、`skipLibCheck: false` 也能编译。
+
 ---
 
 ## 3. 最小骨架（client half）
@@ -149,18 +160,73 @@ interface TabDescriptor {
    */
   createTab?: (state: SidebarState) => { tab: SidebarTab; patch?: Partial<SidebarState> } | null
   /**
-   * 声明式设置（v0.4.1+）：见 §7。
+   * 声明式设置（v0.4.1+）：见 §8。v0.12.0 起增加 `pluginToggles`（插件自有
+   * 设置行，key 无需宿主 schema 字段）与 `render`（自定义设置面板）。
    */
-  settings?: {
-    toggles?: readonly {
-      key: string
-      title: string | (() => string)
-      desc?: string | (() => string)
-    }[]
-  }
+  settings?: SidebarSettingsDeclaration
+  /**
+   * tab 角标（v0.12.0+）：tab 图标旁的小圆角 pill。number 渲染计数（99+ 封顶），
+   * string 原样文本，null/undefined 不显示。每次 tab 栏渲染都会调用——保持廉价；
+   * 抛错会被吞掉（不显示角标，不影响渲染）。
+   */
+  badge?: (ctx: Context, scope: SessionScope, state: SidebarState) => string | number | null | undefined
+  /**
+   * 生命周期回调（v0.12.0+），只由 SERVICE 路径触发：
+   * - onOpen：openTab 真正**新建** tab 后（dedupe/id 安全网聚焦不算打开）；
+   * - onActivate：tab 被聚焦时（dedupe 聚焦、id 安全网聚焦、tab 栏点击激活）；
+   * - onClose：closeTab 关闭 tab 后。
+   * 内置专属流程（diff 拆分放置、agent 终端 reconcile）直接改 state，不触发
+   * 回调——但它们只作用于内置类型（diff/terminal），外部插件的 tab 永远走
+   * service 路径。回调抛错只 console.error，绝不打断打开/关闭流程。
+   */
+  onOpen?: (tab: SidebarTab, scope: SessionScope) => void
+  onActivate?: (tab: SidebarTab, scope: SessionScope) => void
+  onClose?: (tab: SidebarTab, scope: SessionScope) => void
   /** 渲染函数 */
   component: (props: TabComponentProps) => ReactNode
 }
+
+/** 声明式设置声明（v0.12.0 完整形状；行控件见 §8）。 */
+interface SidebarSettingsDeclaration {
+  /** 宿主 prefs 字段行（key 必须是宿主 PrefsSchema 的字段）。 */
+  toggles?: readonly {
+    key: string
+    title: string | (() => string)
+    desc?: string | (() => string)
+    type?: 'switch' | 'text' | 'number'   // v0.11.0+；缺省 'switch'
+    min?: number
+    max?: number
+    placeholder?: string
+    unit?: string
+  }[]
+  /** 插件自有设置行（v0.12.0+）：形状同 toggles，key 插件局部，
+   *  持久化在 pluginSettings[<descriptor id>]，无需宿主 schema 字段。 */
+  pluginToggles?: readonly {
+    key: string
+    title: string | (() => string)
+    desc?: string | (() => string)
+    type?: 'switch' | 'text' | 'number'
+    min?: number
+    max?: number
+    placeholder?: string
+    unit?: string
+  }[]
+  /** 自定义设置面板（v0.12.0+）：给出时齿轮弹窗渲染它而非行列表。 */
+  render?: (props: SidebarSettingsRenderProps) => ReactNode
+}
+
+/** settings.render 收到的 props（v0.12.0+）。 */
+interface SidebarSettingsRenderProps {
+  store: SidebarStore
+  service: BetterSidebarService
+  prefs: SidebarPrefs
+  /** 本 descriptor 自己的持久化设置 blob（pluginSettings[id]）。 */
+  pluginSettings: Record<string, unknown>
+  /** 持久化一条本 descriptor 的插件设置（值须 JSON 可序列化）。 */
+  updatePluginSetting(key: string, value: unknown): void
+  /** 关闭设置弹窗。 */
+  close(): void
+}
 ```
 
 ### 4.2 `TabComponentProps`（你的页面组件收到的 props）
@@ -263,6 +329,7 @@ ctx.effect(() =>
 | `git` | 20 | 是 | 否 | Git 面板 |
 | `subagent` | 30 | 是 | 否 | 子代理拓扑 |
 | `terminal` | 40 | 否（createTab 自增） | 否 | 终端（配额 3） |
+| `browser` | 50 | 否（createTab 铸造 browser:`<n>`，nextBrowser 自增） | 否 | 内嵌网页浏览器（沙箱 iframe；可设置关闭沙箱） |
 | `diff` | -1 | 否（按 id 去重） | 是 | 差异查看（由 GitView 触发） |
 
 你的 `id` 不可与上述重复，否则 `registerTab` 抛 `"tab type \"X\" already registered"`。
@@ -289,10 +356,12 @@ interface FileViewerDescriptor {
   fetchStrategy: 'none' | 'fsRead' | 'mediaUrl' | 'custom' | 'binary-download'
   /** 内容嗅探（覆盖 exts）：head 字节可用时，第一个 detect 返回 true 的 viewer 命中 */
   detect?: (path: string, head: Uint8Array) => boolean
-  /** fetchStrategy='custom' 时的加载函数 */
-  load?: (path: string, scope: SessionScope) => Promise<unknown>
-  /** 声明式设置（v0.4.1+）：形状同 TabDescriptor.settings */
-  settings?: { toggles?: readonly { key: string; title: string | (() => string); desc?: string | (() => string) }[] }
+  /** fetchStrategy='custom' 时的加载函数；v0.12.0+ 第三参 signal 在 viewer
+   *  卸载/重匹配时中止（忽略 signal 的 load 也照常工作） */
+  load?: (path: string, scope: SessionScope, signal?: AbortSignal) => Promise<unknown>
+  /** 声明式设置（v0.4.1+）：形状同 TabDescriptor.settings（v0.12.0 起 viewer
+   *  卡片也有齿轮按钮，pluginToggles/render 同样可用） */
+  settings?: SidebarSettingsDeclaration
   /** 渲染函数 */
   component: (props: FileViewerProps) => ReactNode
 }
@@ -321,7 +390,7 @@ interface FileViewerProps {
 |---|---|---|---|
 | `none` | 不需要字节 | （无） | 自渲染（如纯 UI） |
 | `fsRead` | `/sidebar/api` 的 `fs.read` | `content`, `truncated` | 文本类（CSV/JSON/XML） |
-| `mediaUrl` | `/sidebar/file` 媒体路由 URL | `mediaUrl` | 图片/PDF/Office（viewer 自己 fetch 字节） |
+| `mediaUrl` | `/sidebar/file` 媒体路由 URL | `mediaUrl` | 图片/PDF（viewer 自己 fetch 字节） |
 | `custom` | viewer 的 `load()` 函数 | `customData` | 自定义协议（如远程拉取） |
 | `binary-download` | 不预览，显示下载按钮 | （无） | 无客户端渲染器的二进制格式 |
 
@@ -336,7 +405,7 @@ interface FileViewerProps {
 
 > **head 字节从哪来**：第一次匹配（纯扩展名）没有 head。`fsRead` 策略读取后若文件为二进制，host 的 `fs.read` 响应会带 `head` 字段（base64，前 4KB，`src/index.ts` 的 `READ_HEAD_LIMIT`），编辑器会用它对 `detect` viewer **重匹配一次**——所以 detect 型 viewer 的实际触发场景是"扩展名匹配落空/二进制文件"。文本文件的 detect 嗅探不在内置流程内（用 `exts` 或 `custom` 策略替代）。
 
-> **内置 viewer**（不可重复注册，全部 8 个）：image(0) / pdf(0) / docx(0) / xlsx(0) / pptx(0) / markdown(0, fsRead) / code(-100, catch-all, fsRead) / binary-download(-50, exts doc/xls/ppt + NUL detect)。
+> **内置 viewer**（不可重复注册，全部 6 个）：image(0) / pdf(0) / markdown(0, fsRead) / html(0, fsRead, 沙箱 iframe 预览) / code(-100, catch-all, fsRead) / binary-download(-50, exts doc/xls/ppt + NUL detect)。Office 三件套预览（.docx/.xlsx/.pptx）**不再内置**——已迁至推荐插件（设置页「添加插件」→ 文件预览弹窗里的 Office 预览插件）。
 > code 是兜底 viewer：任何其他 viewer 未认领的文件都会落到 code（CodeMirror 文本编辑）；二进制文件经 head 重匹配被 binary-download 的 NUL detect 认领（下载按钮）。外部 viewer 注册同扩展名 + 更高 priority 即可覆盖。
 
 ### 5.5 注册示例
@@ -411,7 +480,7 @@ const { value } = await res.json()   // 错误时 { ok: false, error: { code, me
 | 方法 | 说明 |
 |---|---|
 | `session.cwd` | 会话权威 cwd（`{ cwd, root, parent }`） |
-| `fs.tree` | 目录列表（`{ path, entries: FsEntry[], truncated }`） |
+| `fs.tree` | 目录列表（`{ path, entries: FsEntry[], truncated }`；FsEntry 含 `isSymlink`/`broken`，目录软链接的 `isDir` 按目标类型） |
 | `fs.read` | 读文件：文本返回 `{ kind: 'text', content, truncated }`；二进制返回 `{ kind: 'binary', size, truncated, head }`（head = base64 前 4KB） |
 | `fs.write` | 原子写文件 |
 | `git.status` / `git.diff` / `git.log` 等 | 全套 Git 只读 + 写操作 |
@@ -453,14 +522,79 @@ interface BetterSidebarService {
    * 打开一个 tab（+ 菜单和外部触发都用它；走 descriptor.dedupeKey 去重）。
    * title 可选：给出时优先于 descriptor.title（editor 显示文件名）；
    * 有 createTab 的 descriptor（terminal）会忽略 title/path/id。
+   * url 可选：把**新建** tab 的 path 预填为 URL（侧边栏浏览器导航种子）；
+   * 聚焦既有 tab 时 url 不会覆写其 path。
    * 被设置禁用的类型是 no-op（console.warn 提示）。
+   * scope（v0.12.0+）定向到指定 session：给出且非当前 session 时，打开落在
+   * 该 session 的侧边栏状态里（没有则按 prefs 新建），不切换 UI 的激活 session；
+   * 定向打开不自动展开目标 session 的面板；缺省或指向当前 session 时行为
+   * 与之前完全一致。注意：available 不拦截 openTab。
+   * 内容型打开（带 path/url seed）自动展开承载面板，保证落点可见。
    */
-  openTab(seed: { type: string; title?: string; path?: string; diff?: SidebarTab['diff']; id?: string }): void
-  /** 关闭一个 tab */
-  closeTab(tabId: string): void
+  openTab(seed: OpenTabSeed, scope?: SessionScope): void
+  /** 关闭一个 tab（未知 id 严格 no-op，无状态搅动）；scope（v0.12.0+）
+   *  随回调传递（含可选 cwd），缺省为 { sessionId: 当前 } */
+  closeTab(tabId: string, scope?: SessionScope): void
   /** 订阅注册表变化（register/dispose 时触发） */
   subscribe(listener: () => void): () => void
+  // ── v0.12.0+ ──────────────────────────────────────────────────────────
+  /** 插件版本（如 '0.12.0'；与 package.json 同步，测试守护） */
+  readonly version: string
+  /** 单调能力清单（只增不删）：'badge' | 'tabLifecycle' | 'updateTab' |
+   *  'openFile' | 'targetedOpen' | 'stateSubscription' | 'tabMeta' |
+   *  'pluginSettings'——用 `features.includes('xxx')` 按能力 gate。 */
+  readonly features: readonly string[]
+  /** 当前快照：激活 sessionId + 其状态（面板几何/打开的 tabs/展开集）+ prefs。
+   *  session 未激活时 state/sessionId 为 undefined。 */
+  getSnapshot(): SidebarSnapshot
+  /** 订阅快照变化（会话切换/状态变更/prefs 写入）；返回 disposer */
+  subscribeState(listener: () => void): () => void
+  /** 更新一个已打开 tab 的显示字段（title/path/meta）；tab 不存在时 no-op */
+  updateTab(tabId: string, patch: { title?: string; path?: string; meta?: unknown }): void
+  /** 激活一个已打开的 tab（tab 栏点击路径；触发 descriptor.onActivate；
+   *  未知 id 严格 no-op）；scope（v0.12.0+）随回调传递，同 closeTab */
+  activateTab(tabId: string, scope?: SessionScope): void
+  /** 在 scope.sessionId 的侧边栏编辑器打开一个文件（title 缺省为文件名；
+   *  id 按路径派生，与内置 open-path 拦截一致，不同文件可并排打开） */
+  openFile(scope: SessionScope, path: string, title?: string): void
 }
+
+/** openTab 的 seed（v0.12.0 起导出命名类型）。 */
+interface OpenTabSeed {
+  type: string
+  title?: string
+  path?: string
+  diff?: SidebarTab['diff']
+  id?: string
+  url?: string
+  /** JSON 可序列化的自定义状态，随 tab 持久化（刷新后原样恢复） */
+  meta?: unknown
+}
+```
+
+**版本与能力探测**（v0.12.0+）：消费插件先查能力再使用新 API，老版本（或旧 DSH）下优雅降级：
+
+```ts
+if (ctx.betterSidebar.features.includes('badge')) {
+  // 使用 TabDescriptor.badge
+}
+if (ctx.betterSidebar.version >= '0.12.0') { /* 字符串比较即可：minor 只增 */ }
+```
+
+**生命周期示例**（v0.12.0+）：打开时启动资源、关闭时释放——组件卸载 ≠ tab 关闭（会话切换也会卸载），所以释放资源要用 `onClose`：
+
+```ts
+ctx.effect(() =>
+  ctx.betterSidebar.registerTab({
+    id: 'my-plugin:db',
+    title: 'Database',
+    single: true,
+    badge: (_ctx, _scope, state) => /* 比如打开的连接数，每次 tab 栏渲染调用，保持廉价 */,
+    onOpen: (tab, scope) => { startWatcher(scope.sessionId) },
+    onClose: (tab, scope) => { stopWatcher(scope.sessionId) },
+    component: ({ scope }) => <DbView sessionId={scope.sessionId} />,
+  })
+)
 ```
 
 ---
@@ -472,7 +606,9 @@ interface BetterSidebarService {
 - 展示：小卡片网格（图标 + 标题 + 类型 id），**高亮 = 启用**，勾选徽标钉在卡片最右端；viewer 卡片额外显示扩展名。
 - 持久化：开关写入 `SidebarPrefs.tabsEnabled / viewersEnabled`（开放 map，**缺省 = 启用**，显式 `false` 才禁用）。
 - 关闭语义：tab 从 `+` 菜单消失、`openTab` 拒绝新开（`console.warn`）、派生流程（子代理自动展开、agent 终端自动补 tab）停止，**已打开的 tab 保留**；viewer 被 `matchFileViewer` 跳过，文件落到下一个匹配。
-- `settings.toggles`（可选）：在卡片行下追加**嵌套开关**（仅父级启用时显示），绑定 `SidebarPrefs` 字段；通过卡片右下角齿轮按钮在原生弹窗中编辑（复选框行）。内置示例：subagent tab 的 `autoOpenSubagent`、terminal tab 的 `agentTerminalTools`。
+- `settings.toggles`（可选）：在卡片行下追加**嵌套设置行**（仅父级启用时显示），绑定 `SidebarPrefs` 字段；通过卡片右下角齿轮按钮在原生弹窗中编辑。行控件 v0.11.0 起不限于布尔：`type: 'switch' | 'text' | 'number'`（缺省 'switch'；text/number 行 blur/Enter 提交，number 行按 min/max 钳制，unit 渲染单位后缀）。内置示例：subagent tab 的 `autoOpenSubagent`、terminal tab 的 `agentTerminalTools` + 自定义字体行。
+- `settings.pluginToggles`（可选，v0.12.0+）：**插件自有设置行**，行控件与 toggles 相同，但 key 是插件局部的——持久化在 prefs 文档的 `pluginSettings[<descriptor id>]`（开放 map，无需宿主 schema 字段）。tab 与 viewer 都可用（v0.12.0 起 viewer 卡片也有齿轮按钮）。
+- `settings.render`（可选，v0.12.0+）：**自定义设置面板**——给出时齿轮弹窗渲染它而非行列表。props 含 store/service/prefs、本 descriptor 的 `pluginSettings` blob、`updatePluginSetting(key, value)` 与 `close()`；抛错会被吞掉并显示内联错误。
 
 ```ts
 ctx.effect(() =>
@@ -481,18 +617,36 @@ ctx.effect(() =>
     title: 'Database',
     order: 50,
     settings: {
+      // 宿主 prefs 字段行：key 必须是宿主 PrefsSchema 的字段（仅此限制）
       toggles: [{
-        key: 'myPluginAutoConnect',   // ⚠️ 必须是宿主 PrefsSchema 的字段，见下
-        title: 'Auto connect',
-        desc: 'Connect on open',
+        key: 'autoOpenSubagent',   // 宿主内置键
+        title: 'Auto-open',
+        desc: 'Open when a subagent appears',
       }],
+      // 插件自有设置行：key 插件局部，持久化在 pluginSettings['my-plugin:db']
+      pluginToggles: [{
+        key: 'pageSize',
+        title: 'Page size',
+        type: 'number',
+        min: 1,
+        max: 100,
+        unit: 'rows',
+      }],
+      // 或完全自定义面板（给定时代替行列表）
+      render: ({ store, service, prefs, pluginSettings, updatePluginSetting, close }) => (
+        <MySettingsPanel
+          values={pluginSettings}
+          onChange={(key, value) => { updatePluginSetting(key, value) }}
+          onDone={close}
+        />
+      ),
     },
     component: ({ scope }) => <DbView sessionId={scope.sessionId} />,
   })
 )
 ```
 
-> ⚠️ **key 必须是宿主 PrefsSchema 的字段**（内置键：`autoOpenSubagent` / `agentTerminalTools`）。外部插件的自定义键会被 settings seam 丢弃——当前版本嵌套开关只支持宿主预置的布尔偏好；想给用户暴露你自己的设置，走 DSH 自己的 settings 服务（`ctx.settings`），不要依赖这里的 `toggles`。
+> ⚠️ **`toggles` 的 key 必须是宿主 PrefsSchema 的字段**（内置键：`autoOpenSubagent` / `agentTerminalTools` / `terminalFontFamily` / `terminalFontSize` / `htmlViewerNoSandbox` / `htmlViewerDefaultUnsafe` / `browserNoSandbox` / `browserInterceptLinks`）。**v0.12.0 起设置 seam 已开放**：你自己的设置走 `pluginToggles`（声明式行）或 `render`（自定义面板），值持久化在 `pluginSettings[id]`——不再需要宿主 schema 字段，也不再被 seam 丢弃。值须 JSON 可序列化（行控件只产出 string/number/boolean；自定义面板自行负责）。
 
 ---
 
@@ -516,6 +670,7 @@ ctx.effect(() =>
 | **portal 限制** | 整面板 slot 由 ui-layout 独占，外部 tab 只能进入 better-sidebar 的 portal 内部，无法全屏替换整个面板 |
 | **id 冲突** | `registerTab` / `registerFileViewer` 对重复 id 抛错；建议用包前缀（`my-plugin:xxx`） |
 | **不要 value-import `dsh-better-sidebar`** | 即使是 `./client/service` 子路径，运行时落点也是 client bundle；只做 type-only import |
+| **client 声明图零 Node 依赖（v0.12.0+）** | `dsh-better-sidebar/client/service` 的可达声明面（含 `Context`）不引用 `node:*` / `Buffer`——纯浏览器侧插件无需 `@types/node`，`skipLibCheck: false` 也能编译（`scripts/check-consumer-types.sh` 守护；主入口含宿主声明，宿主消费者本就处于 Node 环境） |
 
 ---
 
@@ -535,7 +690,7 @@ ctx.effect(() =>
     "./client": { "types": "./lib/types/client/index.d.ts", "default": "./lib/client.js" }
   },
   "peerDependencies": {
-    "cordis": "^4.0.0-rc.7",
+    "cordis": "^4.0.0-rc.8",
     "dsh-better-sidebar": "workspace:*",
     "@deepseek-ai/dsh-client-runtime": "^0.0.1",
     "react": "^18.2.0"
@@ -598,7 +753,7 @@ function parseCsv(text: string): string[][] { /* ... */ }
 1. `~/.dsh/profiles/web/package.json` 的 `dependencies` 加 `"my-plugin": "link:<你的插件路径>"`；
 2. `~/.dsh/profiles/web/cordis.patch.yml` 追加挂载行（`- insert: - id: my-plugin / name: 'my-plugin'`）；
 3. 在 profile 目录 `pnpm install`；
-4. 重启 `dsh web` + 浏览器硬刷新（Cmd/Ctrl+Shift+R）。
+4. 浏览器硬刷新（Cmd/Ctrl+Shift+R）即可看到效果（DSH 对 client 改动热加载，无需重启 `dsh web`；仅 host 半改动需要重启）。
 
 ---
 
@@ -606,13 +761,28 @@ function parseCsv(text: string): string[][] { /* ... */ }
 
 better-sidebar 的内置 tab 和 viewer 就是参考实现（"吃狗粮"）：
 
-- **`src/client/builtins/`**：6 个内置 tab（tabs.tsx）+ 8 个内置 viewer（viewers.tsx）的注册代码 + 聚合与 disposer 生命周期（index.ts）
+- **`src/client/builtins/`**：7 个内置 tab（tabs.tsx）+ 6 个内置 viewer（viewers.tsx）的注册代码 + 聚合与 disposer 生命周期（index.ts）
 - **`src/client/service.ts`**：`BetterSidebarService` 接口 + `createBetterSidebarService` 工厂实现（含匹配算法、dedupe、createTab、启用态 gating）
 - **`src/client/Sidebar.tsx`**：`TabContent` 分发（查 `getTab` → 调 descriptor.component；未注册 → `<OrphanedTab/>`）、`+` 菜单构建（order 排序 + available disabled + 禁用过滤）
 - **`src/client/SideCardSection.tsx`**：声明式设置页（注册表驱动清单 + `settings.toggles` 嵌套开关 + 开关持久化）
 - **`src/client/api.ts`**：`/sidebar` API 的封装（复制其 fetch 模式到你的插件）
 - **`tests/service.spec.ts`**：注册表生命周期 / 匹配算法 / dedupe / createTab / 启用态 gating 测试
-- **`tests/builtins.spec.ts`**：内置注册清单断言（6 tab + 8 viewer + 声明式元数据）
+- **`tests/builtins.spec.ts`**：内置注册清单断言（7 tab + 9 viewer + 声明式元数据）
 - **`docs/plans/2026-08-11-service-registry-design.md`** / **`docs/plans/2026-08-11-declarative-sidebar-settings-design.md`**：设计文档（§17 含实施偏差记录，以现状为准）
 
 调试时直接读这些文件即可看到所有 API 的真实用法。
+
+---
+
+## 11. 真实接入案例
+
+第一个通过 `ctx.betterSidebar` 接入的三方插件：[dsh-sentinel](https://github.com/fuhefei/dsh-sentinel) —— 条件驱动的 agent 唤醒系统（文件/进程/端口/HTTP/命令/webhook 传感器，条件达成自动唤醒休眠会话）。
+
+- **接入方式**：可选软依赖——client half 本地重述最小服务契约（`registerTab`），未安装 better-sidebar 时注册静默跳过，插件原有表面不受影响；
+- **注册内容**：`dsh-sentinel:watches` tab（order 60，单实例）：全服务器监控表 + 最近触发历史；
+- **类型处理**：未 value-import `dsh-better-sidebar`，构建零耦合；与 §2 的 `import type {}` 方案可互换；
+- **实测**：v0.3.0 起，真实 web profile 验证通过。
+
+通过 `ctx.betterSidebar` 的三方插件[dsh-sidebar-qa](https://github.com/ChenRuoT/dsh-sidebar-qa) —— 基于 better-sidebar 的划选提问。tab分页: 对话划选 → 右侧面板提问 → 同工作区独立追问会话（❓追问·主题）：快速无思考模型压缩主对话上下文后与引文一起注入，不打断主对话；追问可嵌套、可继续、可归档
+
+更多插件接入后欢迎在此登记（一句话 + 链接）。

docs/plans/2026-08-10-office-preview-design.md

@@ -260,7 +260,9 @@ if (officeKind === 'docx' || officeKind === 'xlsx') {
 - `xlsx`(SheetJS,~400KB,xlsx 导入)
 - `@univerjs/core` + `@univerjs/sheets` + `@univerjs/sheets-ui` + `@univerjs/sheets-formula` + `@univerjs/sheets-conditional-formatting` + `@univerjs/sheets-chart` + `@univerjs/docs-ui` + `@univerjs/design` + `@univerjs/engine-render`(~5MB 合计)
 
-**不放 `peerDependencies`**:这些是插件自有运行时依赖,不由 web profile 提供(对比现有 `node-pty`/`xterm`/`CodeMirror` 也在 `dependencies`)。
+**不放 `peerDependencies`**:这些是插件自有运行时依赖,不由 web profile 提供(对比现有 `node-pty`/`CodeMirror` 也在 `dependencies`)。
+
+> **实施偏差记录（#122，2026-08）**：上文"`xterm` 也在 `dependencies`"已过时——`xterm` 与 `@xterm/addon-fit` 自 v0.13.0 起从 `dependencies` 迁至 `devDependencies`：二者始终内联进 `lib/client-terminal.js`（tsdown `noExternal` 全内联 + CSS 构建期解析），运行时零依赖；同时代码与开发依赖已从已弃用的 `xterm` 迁移到官方新包名 `@xterm/xterm@^5.5.0`（addon-fit@0.10.0 的 peer 约束锁 `^5.0.0`，不用 6.x），消除用户安装时的 deprecated 与 missing-peer 警告。Office 预览若落地，其依赖按同一原则处理。
 
 ### 5.2 tsdown.config.ts 调整
 

docs/plans/2026-08-11-declarative-sidebar-settings-design.md

@@ -135,3 +135,28 @@ isViewerEnabled(id: string): boolean
 4. **清单排序**：tabs 按 `hidden` 置后 + `order` 升序（editor/diff 殿后）；viewers 按 priority 降序（code 兜底最后）。
 5. **开关改为卡片点击（v0.4.1 追加）**：清单项与嵌套相关设置、`openByDefault` 全部从"复选框行"改为**可点击卡片**——`<button aria-pressed>`，整卡即开关，视觉状态即状态（启用 = 品牌描边 + 交互选中填充 + `IconCheckOutline16` 勾选徽标；禁用 = 中性 hairline + 文字降级）。嵌套相关设置渲染为更小的缩进卡片；宽度输入保持原生设置行（它是数值不是开关）。设置导航齿轮图标为宿主 shell 硬编码（`navIcon` 按 section id 映射，无插件注入点），用户选择不改宿主，保持现状。
 6. **小卡片响应式网格 + 二级设置弹窗（v0.4.1 再追加）**：清单项改为**小卡片**，置于 `repeat(auto-fill, minmax(148px, 1fr))` 响应式网格（一行自适应多个，随宽度换行）；卡片结构 = 顶行（图标 + 标题省略 + **勾选徽标钉在最右端**）+ 类型/扩展名描述行（省略号截断，`title` 属性给出完整值）。声明了 `settings.toggles` 的卡片右下角渲染**齿轮角标按钮**（`IconSettingsOutline16`，仅父级启用时显示），点击打开**原生 `Modal` 弹窗**，内含 DSH 原生设置行（标题/描述 + 品牌强调原生复选框 + hairline 分隔，末行去分隔线）——二级设置不再内嵌于网格。实现细节：Modal 采用条件挂载（`settingsFor !== null && <Modal open …>`），因为 Modal 原语无条件调用 hooks，常闭挂载在测试的 dual-react（react 18.2 server / 18.3 bundled）分裂环境下会崩；弹窗行体抽成 `FeatureSettingsRows` 供 renderToString 直测。
+
+---
+
+## 8. v0.12.0 设置 seam 开放记录（2026-08-14，feat/plugin-api-v012）
+
+设计正文「key 必须是宿主 PrefsSchema 的字段」的限制在 v0.12.0 被打开（纯增量，`toggles` 的宿主 key 语义不变）：
+
+- **持久化**：`SidebarPrefs` 增加 `pluginSettings: Record<string, Record<string, unknown>>`（开放嵌套 map，schema `z.dict(z.dict(z.any())).default({})`，按 descriptor id 分桶）——外部插件的自有设置不再需要宿主 schema 字段、不再被 settings seam 丢弃。`parsePrefs` 增加 `pluginSettingsMapOf` 校验（非对象整体回退 `{}`）。
+- **声明**：`SidebarSettingsDeclaration` 增加 `pluginToggles`（声明式行，控件同 toggles 的 switch/text/number，值须 JSON 可序列化）与 `render?: (props: SidebarSettingsRenderProps) => ReactNode`（自定义面板：store/service/prefs/pluginSettings/updatePluginSetting/close；抛错被吞并显示内联错误）。
+- **渲染**：齿轮弹窗体抽为 `SettingsBody`（`render` 存在时优先，否则 toggles 行 + pluginToggles 行，后者把 pluginSettings 投影到 prefs 面复用 `FeatureSettingsRows`）；`settingsFor` 状态从 `TabDescriptor | null` 扩为 `TabDescriptor | FileViewerDescriptor | null`——viewer 卡片 v0.12.0 起同样有齿轮设置弹窗（§4.6 原仅 tab）。
+- **向后兼容**：旧设置文档无 `pluginSettings` 字段 → schema default `{}`；`toggles` 行为与 v0.11.0 完全一致。
+
+---
+
+## 9. 设置页 UI/UX 现代化（feat/settings-sidecard-uiux）
+
+纯视觉/交互入口改造，无 API 与持久化语义变化（`settings.toggles` / `pluginToggles` / `render` / Modal 条件挂载契约全部不变）：
+
+- **二级设置入口：齿轮角标 → 卡片底部设置条**。原 `.cardGear`（16×16px 三级色透明幽灵按钮，`absolute; top:46px` 像素钉位 + `.cardWithGear` padding 耦合）可发现性不足；改为卡片底缘的**全宽设置条** `.cardSettings`（hairline 分隔、齿轮图标 12px + 「功能设置」文字标签 11px/500，hover 换 `--dsw-alias-interactive-bg-hover-accent` 品牌淡底 + brand 字色）。可见性条件不变（仅父级启用且声明 settings）；aria-label 模式 `"${title} ${t('settingsPopup')}"` 不变（测试契约）。常规行齿轮 `.rowGear` 升级为 22×22 带 border-l2 边框的芯片按钮（hover 同样 accent 引导）。
+- **启用态指示（后续迭代：勾选 → 紧凑开关滑块）**：启用卡片描边从全强度品牌色柔化为 `color-mix(button-primary-fill 45%)`。第一版曾把勾选徽标改为 `--dsw-alias-state-success-primary` 实心绿（绿 = 已开启确认，brand = 激活强调）；按反馈再迭代为**紧凑品牌开关滑块** `.cardSwitch`（30×16 track + 10px thumb，开 = brand 填充 + thumb 反色，关 = 中性且不渲染滑块）——纯视觉指示，卡片本身仍是开关（`aria-pressed` 语义不变），不再使用 success 色。全部颜色仍为 `--dsw-alias-*` 令牌派生，零硬编码。
+- **卡片等高**：`.card` 统一 `min-height: 106px` + `.cardMain { flex: 1 }` + `.cardTop { min-height: 28px }`——带设置条的卡片（天然更高）与不带设置条的卡片、无图标卡片全部等高；`prefers-reduced-motion` 覆盖新增的 `.cardSwitchTrack/Thumb` 过渡。
+- **二级弹窗长列表**：`.popupRows` 增加 `max-height: min(56vh, 480px)` + 内部 `overflow-y: auto`（终端等声明 6 行设置的场景下弹窗壳体与 Done 按钮固定，仅行区滚动）；行密度收紧（padding 12/14、gap 8）。
+- **节奏**：section gap 16 / group padding 20 / 网格 `minmax(180px,1fr)` gap 12；计数徽章改为 `accent-soft` 淡底 pill（versionBadgeTag 同款令牌配方）；开关关态 thumb 降一档（label-tertiary）+ track 底 layer-2。
+- **动效纪律**：全部过渡 ≤160ms 且仅 background/border-color/color；`prefers-reduced-motion` 扩展覆盖 `.cardSettings` / `.rowGear` / `.popupRow`。
+- **清理**：合并 `.pluginEntries` 重复定义（原 L598 与 L795 两处，保留带 max-height/overflow 的一处）。

docs/plans/2026-08-11-html-browser-builtins-design.md

@@ -110,6 +110,7 @@ URL 采用**路径编码**（无 query）——WHATSG URL 解析对纯路径相
 - 设计初期考虑过 srcdoc + `<base>` 注入以实现"预览反映未保存草稿"，因 srcdoc 无沙箱时继承父源的致命风险与 base 注入的脆弱性，改采 route-src（预览 = 已保存文件）；相对资源经路径编码 URL 天然解析，无需内容改写。
 - `normalizeBrowserUrl` 的 scheme 判别：朴素正则会把 `example.com:8080` 误判为 scheme，最终采用「`://` 完整 URL + 危险 scheme 黑名单 + 解析后协议兜底」三段式。
 - `nextBrowser` 在 sanitize 中为宽松字段（缺失/畸形回退 1），避免旧持久化布局整体失效（与严格校验的 `nextTerminal` 不同）。
+- **UNC 路径编码标记（PR #134 整合 #79/#115 时）**：`/sidebar/html` 对 `\\server\share\...` / `//server/share/...` 采用 sessionId 后的 `//` 标记，且解码统一重建为**前斜杠** `//server/share/...` 而非反斜杠——`node:path` 在 win32/POSIX 上分别解析为 `\\server\share\...` / `/server/share/...`，因此无需任何平台信号；原「400 双斜杠」约束改为「首个空段仅作 UNC 标记，其余空段仍 400」。
 
 ## 8.1 追加需求（2026-08-11，v0.5.0 内）
 

docs/plans/2026-08-11-service-registry-design.md

@@ -267,7 +267,7 @@ return <viewer.component {...props} />
 ```jsonc
 {
   "peerDependencies": {
-    "cordis": "^4.0.0-rc.7",
+    "cordis": "^4.0.0-rc.8",
     "dsh-better-sidebar": "workspace:*"
   },
   "peerDependenciesMeta": {
@@ -414,3 +414,19 @@ export function apply(ctx: Context): void {
 ### 17.10 测试
 
 新增 `tests/builtins.spec.ts`（内置注册清单）、`tests/orphaned-tab.spec.tsx`（sanitize 保留未注册类型 + 占位渲染）、`tests/editor-load.spec.ts`（策略分发纯函数）；`tests/browser-globals.ts` 为拉入 xterm/CodeMirror 的 spec 提供模块求值期浏览器全局 mock。`matchFileViewer` 相关断言按 17.3 语义重写。
+
+---
+
+## 18. v0.12.0 基座化扩展记录（2026-08-14，feat/plugin-api-v012）
+
+§5 的服务接口在 v0.12.0 做了**纯增量**扩展（无任何签名删除 / 语义变更，向上兼容），全部记录于此，文档以本节为准：
+
+- **类型导出补齐**：`./client/service` 入口 re-export 公共状态词汇——`SidebarTab` / `SidebarState` / `SidebarStore` / `SidebarSnapshot` / `SidebarDiffRef` / `TabType` / `SessionScope` / `SidebarPrefs` / `OpenTabSeed` / `SidebarSettingsRenderProps`。此前消费者无法命名这些类型（TS2459），只能靠推断。
+- **client 声明图零 Node 依赖**：`context-types.ts` 的 `SidebarWebRoute` / `SidebarWebUpgradeRoute` 改用结构镜像类型（`SidebarHttpRequest` / `SidebarHttpResponse` / `SidebarUpgradeSocket` / `SidebarUpgradeHead`），宿主在 ws 边界显式转型（`src/index.ts` 两处）。外部消费插件无需 `@types/node`、`skipLibCheck: false` 也能编译（`scripts/check-consumer-types.sh` 双层校验守护）。
+- **新服务方法**：`version` / `features`（单调能力清单，只增不删）；`getSnapshot` / `subscribeState`（状态订阅，委托 store）；`updateTab(tabId, patch)`（title/path/meta）；`activateTab(tabId)`（跨树激活，tab 栏点击路径）；`openFile(scope, path, title?)`（editor 打开，id 按路径派生与内置拦截一致）；`openTab(seed, scope?)`（定向到指定 session：`SidebarStore.reduceFor` 加载/变更/持久化目标 session 而不切换 snapshot，UI 不扰动；scope 指向当前 session 时走原 reduce 路径保证 notify）。
+- **新 descriptor 字段**：`badge`（tab 角标：number 计数 99+ 封顶 / string 文本 / null 不显示，每次 tab 栏渲染调用，抛错吞掉）；`onOpen` / `onActivate` / `onClose`（生命周期回调，service 路径派发——dedupe/id 安全网聚焦触发 onActivate 而非 onOpen；内置 diff 拆分与 agent 终端 reconcile 直接改 state 不触发，但只作用于内置类型；回调抛错只 console.error）；`SidebarTab.meta`（JSON 可序列化自定义状态，`sanitizeNode` 宽松保留，跨刷新原样恢复）。
+- **设置 seam 开放**：`PrefsSchema` 增加 `pluginSettings: z.dict(z.dict(z.any())).default({})` 开放嵌套 map；`settings.pluginToggles`（插件自有声明式行）与 `settings.render`（自定义面板，props 见 §5）替代「自定义 key 被 seam 丢弃」的限制；viewer 卡片 v0.12.0 起同样有齿轮设置弹窗。
+- **`FileViewerDescriptor.load` 第三参 `signal?: AbortSignal`**：EditorHost 在卸载/重匹配时 abort（忽略 signal 的 load 照常工作）。
+- 测试：`tests/consumer-types.ts`（消费面编译门）、`tests/api-surface.spec.ts`（client 图零 node 依赖守护 + 能力常量）、`tests/service.spec.ts` 新增生命周期 / 定向打开 / updateTab / activateTab / openFile / meta 持久化用例、`tests/unit.spec.ts` 新增 `reduceFor` 与 sanitize meta 用例。
+
+实现偏差：§5.1 的 `openTab(seed)` 单参签名保留为 `openTab(seed, scope?)` 的可选参数（非破坏）；`SidebarSnapshot` 类型 re-export 自 `./client/service` 而非新建独立文件。

docs/plans/2026-08-12-follow-dsh-i18n-design.md

@@ -0,0 +1,65 @@
+# 跟随 DSH 的 i18n（ctx.locale）设计
+
+> 2026-08-12 · 随 v0.8.2 发布
+
+## 背景
+
+better-sidebar 的界面文案（约 260 处 `t()` 调用、28 个文件）此前自带 zh/en 词典并直接读
+`navigator.language`（`src/client/locales.ts` 头注释曾明言"renders outside the slot
+system's locale seat, so it reads the browser language directly"）。问题：
+
+- DSH 的语言偏好是 Host-backed（`locale.preference`，存于 `$DSH_HOME/settings.yaml`），
+  用户设置与浏览器语言不一致时侧边栏不跟随（如偏好 zh、浏览器 en 时侧边栏仍为英文）。
+- 词典游离在 DSH 的 i18n 注册表之外，无法参与公共命名空间回退等机制。
+
+DSH 的 i18n 系统（`@deepseek-ai/dsh-client-locale`）：
+
+- `ctx.locale` 服务（client-only）：`getSnapshot()/subscribe()` 是 LocaleFace
+  （uSES 安全，revision 递增），`locale/change` 事件在切换时触发；
+- `ctx.locale.register(ns, {zh, en})` 命名空间词典注册（typed 变体要求合并
+  `LocaleNamespaceMap`）；查询链 ns → common → zh → key；
+- 所有 DSH 客户端包以 `inject = [..., 'locale']` 消费。
+
+## 设计决策
+
+1. **结构镜像服务**（仓库惯例，`src/context-types.ts` 头注释）：本插件解析在 DSH
+   monorepo 单一 cordis 实例之外，上游 `declare module 'cordis'` augmentation 不达此
+   Context。新增 `SidebarLocaleService` 结构脸（只镜像用到的切片：
+   `getSnapshot` / `subscribe` / `register`），merge `Context.locale`。不引入
+   `@deepseek-ai/dsh-client-locale` 依赖、不做 value import（client bundle 纯度门）。
+2. **保留模块级 `t()`**：`t()` 被 28 个文件使用，穿 props 不可行。改为模块级 holder：
+   `apply()` 调 `attachLocale(ctx.locale)`，`t()`/`isZh()` 从 holder 读活跃 locale；
+   无 holder 时回退既有 `navigator.language` 检测（行为与改动前完全一致，也是 jsdom
+   测试与非标准组合的降级路径）。
+3. **根级重渲染触发**：侧边栏自行 `createRoot` 挂在 slot 系统之外，拿不到 `t` seat。
+   在 `Sidebar.tsx` 根组件加 `useSyncExternalStore(ctx.locale.getSnapshot/subscribe)`
+   （该文件已用此 API 订阅 sessions/store）；树内无 `React.memo`，根重渲染即整树
+   重渲染，所有渲染期 `t()` 求值读到新语言。事件期调用（intercept、api、subagent-tasks）
+   在调用时刻读当前语言，天然正确。SideCardSection 由 settings shell 渲染，shell 自身
+   订阅 locale revision（ui-settings-general 的 section rows 缓存含 locale revision），
+   自动跟随。
+4. **命名空间 `'betterSidebar'`**：`'sidebar'` 已被 DSH 的 ui-sidebar 占用。注册走
+   非类型化单语言重载 `register(ns, locale, dict)`（DSH 内 ui-permission 同款先例）；
+   键型安全由本地 `const en: Record<keyof typeof zh, string>` + 测试键集相等断言保证。
+5. **词典注册进 DSH 注册表**：`ctx.effect` 内注册 zh/en 并返回合并 disposer
+   （fiber 卸载时撤销，HMR 重激活不抛 "already registered"）。
+6. **xlsx 预览的 Univer locale pack**：`xlsx-view.tsx` 原内联 navigator 检测改走
+   `isZh()`（跟随 DSH 语言；Univer 实例在挂载时创建，语言切换不重建实例——可接受）。
+
+## 实施偏差记录
+
+- 无。计划与实施一致。
+- 版本号随 v0.8.2 发版提交（`package.json` + `dsh.plugin.json`）。
+- v0.8.2 后补遗：md 预览（`TextEditor.tsx`）的代码块复制按钮文案——DSH 的
+  `MarkdownText`/`CodeBlock` 是 cordis-free 组件，未传 `codeLabels` 时回退到硬编码中文
+  「复制/复制成功」。修复为渲染时传入 `codeLabels={{ copyLabel: t('copy'), copiedLabel: t('copied') }}`
+  （对齐 DSH 聊天区 `AssistantMarkdown` 的做法），新增 `tests/markdown-copy-labels.spec.tsx`
+  钉住 zh/en 跟随。
+
+## 验收
+
+- `pnpm typecheck` / `pnpm test` / `pnpm build`（纯度门）全绿；`tests/locales.spec.ts`
+  覆盖：无服务回退、attach 后跟随活跃 locale 实时切换、detach 恢复回退、占位符插值、
+  relativeTime 链路、命名空间名、zh/en 键集相等。
+- 手动：设置页切换语言 → 侧边栏全部文案实时切换；`locale.preference: zh` 且浏览器 en
+  → 侧边栏中文。

docs/plans/2026-08-12-lazy-chunks-design.md

@@ -0,0 +1,89 @@
+# 客户端懒加载分块（lazy chunks）设计
+
+> 日期:2026-08-12
+> 状态:已实现
+> 范围:`dsh-better-sidebar` 插件,客户端 bundle 拆分
+
+## 1. 背景与问题
+
+改造前客户端是单文件 bundle(`lib/client.js`,约 24.6MB),页面启动时全部**下载 + 解析 + 执行**。实测构成(按 sourcemap 源字节):
+
+| 依赖 | 体积 | 用途 |
+|---|---|---|
+| `@univerjs/*` 全家桶 + echarts/zrender 等 | ~18MB | .xlsx 预览 |
+| `@codemirror/*` + `@lezer/*` | ~1.9MB | 文本编辑器高亮 |
+| `xlsx`(SheetJS) | ~0.6MB | .xlsx 解析 |
+| `@aiden0z/pptx-renderer` | ~0.5MB | .pptx 预览 |
+| `xterm` | ~0.3MB | 终端 |
+| `docx-preview` + `jszip` | ~0.2MB | .docx 预览 |
+| 插件自身代码 | ~0.35MB | — |
+
+虽然 `office-view.tsx` 用了动态 `import()`,但 `codeSplitting: false` 只保证**延迟执行**(`Promise.resolve().then(() => (init_docx_preview(), ...))`),下载与解析成本仍在启动时;且 `xlsx-to-univer.ts` 对 `@univerjs/presets` 的静态 value-import 让 Univer 核心实际在启动时执行。
+
+**目标**:重依赖拆成独立脚本,首次打开对应功能才下载/解析/执行;启动只拉核心(~325KB)。
+
+## 2. 机制
+
+chunk 脚本**不经过** `window.__ModuleLoader__` / `ClientModuleSystem.import()` 的物化路径——模块系统的 import() 只解析 seed word / shell-own 模块 / 已注册 factory / boot graph row,chunk id 四者皆非,解析行为依赖 DSH 版本(实测某些版本在 factory 已注册时仍抛 "cannot resolve")。因此改为插件自有的全局 factory 注册表:
+
+1. **构建期**:每个 chunk 是独立 tsdown 浏览器 bundle(`lib/client-<name>.js`),脚本首行为:
+   ```js
+   globalThis.__dshChunks__ = globalThis.__dshChunks__ || {};
+   globalThis.__dshChunks__["terminal"] = (require) => { /* CJS 闭包体 */ };
+   ```
+   与主 bundle 相同的 externals(react 等走 module table)、纯度门、CSS 内联管线;`codeSplitting: false` 保持单文件。
+2. **运行期** `loadChunk(name)`:
+   - 注入 `<script src="/sidebar/bundle/<name>.js">`(经典同源脚本;官方 `/plugins/<id>/client.js` 路由的路径白名单无法服务任意文件名,故走插件自有路由);
+   - 从 `globalThis.__dshChunks__[name]` 读取 factory(脚本执行即赋值,幂等——重复执行覆盖槽位,无 "duplicate factory registration" 错误类);
+   - 用**自定义 require** 物化:externals(CLIENT_EXTERNALS 清单)经 `__DSH_MODULES__.import(spec)` 的 **seed 分支**逐一解析(页面级记忆化;解析失败的 spec 标记未解析,仅当 chunk 实际 require 时才报错)——seed 分支是模块系统最稳定、跨版本一致的部分。
+
+## 3. 分块清单
+
+| chunk 名 | 入口 | 内容 | 构建产物 | 触发 |
+|---|---|---|---|---|
+| `xlsx` | `src/client/chunks/xlsx.tsx` | `XlsxView` + Univer 全家桶 + xlsx + Univer CSS | lib/client-xlsx.js(~20MB) | 打开 .xlsx |
+| `docx` | `src/client/chunks/docx.tsx` | `DocxView` + docx-preview + jszip | lib/client-docx.js(~330KB) | 打开 .docx |
+| `pptx` | `src/client/chunks/pptx.tsx` | `PptxView` + pptx-renderer | lib/client-pptx.js(~2.4MB) | 打开 .pptx |
+| `terminal` | `src/client/chunks/terminal.tsx` | `TerminalView` + xterm + addon-fit + xterm.css | lib/client-terminal.js(~450KB) | 打开终端 tab |
+| `editor` | `src/client/chunks/editor.tsx` | `TextEditor` + @codemirror/* + lang.ts + cm-themes | lib/client-editor.js(~1.6MB) | 打开 code/md/html 文件 |
+| `mermaid` | `src/client/chunks/mermaid.tsx` | `MermaidBlocks` + mermaid + d3/dagre/cytoscape | lib/client-mermaid.js(~7MB) | 预览含 mermaid fence 的 md |
+| 核心 | `src/client/index.tsx` | 其余全部 | lib/client.js(~325KB) | 启动 |
+
+关键拆分:**`office-view.tsx` 拆为 `docx-view.tsx` + `xlsx-view.tsx` + `office-shared.tsx`**(共享 `LoadState`/`BinaryFallback`)。若不拆,docx chunk 会经共享文件静态拖入 `xlsx-to-univer` → Univer 14.5MB。原路径 `office-view.tsx` 保留为 re-export 垫片,兼容 `./src/*` 深导入。
+
+## 4. 缓存契约(三层,各带失败路径)
+
+| 层 | 机制 | 失败路径 |
+|---|---|---|
+| 内存 | `loadChunk` 每 chunk 一个 in-flight promise,并发去重,常驻到 `resetChunks` | 失败删除缓存项 → 下次调用重试 |
+| 执行 | 脚本执行即覆盖全局注册表槽位(赋值幂等) | 物化失败清缓存 → 重试重新注入 + 重新执行脚本 |
+| HTTP | `/sidebar/bundle` 路由 `cache-control: no-cache` + ETag(内容哈希,按 mtime/size 记忆化),`If-None-Match` 命中返回 304 | 页面刷新/HMR 重激活时 304 免重下载 17MB;文件变化 ETag 轮转返回 200 |
+
+**HMR**:`apply()` 每次激活调用 `resetChunks()`(清内存缓存 + externals 记忆),热更新后重新拉取新代码。chunk 源码单独改动需手动刷新页面(HMR 轮询只盯 client.js)。
+
+## 5. 对外 API 兼容性(硬约束)
+
+- `ctx.betterSidebar` 服务方法签名与行为零变化;懒加载只作用于**内置** descriptor,外部插件注册的原样存储/渲染。
+- `component` 契约 `(props) => ReactNode` 保持:懒包装是**纯渲染函数**(函数体无 hooks,hooks 在内部 `LazyChunkView`),兼容 Sidebar 的函数式调用与 EditorHost 的 `createElement` 渲染两种风格。
+- 内置 viewer/tab 的 id、exts、priority、detect、icon、title、settings 全部不变 → `matchFileViewer` 语义、外部插件同扩展名高优先级覆盖、设置页清单不变。
+- 公开类型面(`./client/service`、`./client/api`)不变;无新增 peerDeps。
+- 契约测试:`tests/lazy-chunk.spec.tsx` 钉住"component 可直接函数调用不抛错"。
+
+## 6. 边界与失败模式
+
+- chunk 加载/执行/物化失败 → 视图级错误 + 重试 UI(`css.editorError` + `css.terminalRetry`),面板其余部分不受影响;
+- host 旧版本无 `/sidebar/bundle` 路由(404) → 同样的错误 + 重试,升级 host 后重试即可;
+- `window.__DSH_MODULES__` 缺失(异常环境) → 明确报错,不触网;
+- chunk 注册 id 恒定 `dsh-better-sidebar/<name>`,两渠道共用(每页只活一个渠道——双渠道并存本就双挂载,属既有破损组合);
+- 跨 chunk 复用:`t()`/`api.ts`/`SandboxStatusBar`/`clsx`/`sidebar.module.css` 等无状态小模块允许在各 chunk 内联(几十 KB 级重复),避免 chunk→主 bundle require 的脆弱耦合;
+- CSS:`sidebar.module.css` 的 tagId 与官方渠道核心一致 → 幂等跳过注入;registry 渠道会多注入一份同内容样式(数据标签差异,无功能影响);xterm.css/Univer.css 随各自 chunk 注入。
+
+## 7. 实施偏差记录
+
+- 原设想 React.lazy + Suspense 被否决:错误处理需 error boundary,重试语义差;改用有状态包装组件(loading/error/retry 三态),与本库"每个视图自带 loading/error/retry"风格一致。
+- 原设想 chunk 注册 id 按渠道区分(`__DSH_PLUGIN_ID__` define)被否决:chunk 文件两渠道共用,恒定槽位即可;避免重复构建 6 份产物。
+- `resetChunks` 同时清空测试注册表(测试隔离需要)。
+- `lazy-chunk.tsx` 内部渲染用 `ComponentType<any>` 状态成员规避 React 18 createElement 泛型重载限制(仅内部一处显式 any)。
+- **v2(运行时修复)**:最初实现经 `window.__ModuleLoader__.load({id})` 注册 chunk factory、再 `__DSH_MODULES__.import(id)` 物化——真实环境报 `client-modules: cannot resolve "dsh-better-sidebar/terminal"`(某 DSH 版本的 import() 不解析已注册的非 boot 图 id)。改为全局 factory 注册表(`globalThis.__dshChunks__`) + 自定义 externals require(seed 分支),彻底不依赖模块系统的 factory 解析行为;`resetChunks` 不再需要 invalidate。
+- **v3(运行时修复)**:terminal 懒包装把整个 `TabComponentProps` 原样透传,但 `TerminalView` 的 props 是 `{ scope, tabId, store }` 而 `TabComponentProps` 只有 `tab` 对象、没有 `tabId` → `tabId` 为 undefined → `isAgentTabId` 里 `undefined.startsWith` 崩溃(`dsh-better-sidebar: Cannot read properties of undefined (reading 'startsWith')`)。修复:descriptor 显式映射 `tabId={tab.id}`,懒包装的 props 泛型 = TerminalView 真实签名(`{ scope, tabId, store }`);回归测试钉住映射(lazy-chunk.spec.tsx)。**教训:懒包装的 props 泛型必须等于目标组件真实 props,而非描述符 props 全集**。
+- **v2 附加**:bundled 产物经真实 `ClientModuleSystem`(带真实 react seed)端到端验证——5 个 chunk 均能物化出真实 React 组件;产物契约由 `tests/chunk-artifact.spec.ts` 长期钉住(脚本执行赋值槽位 + factory 可被 externals require 物化)。

docs/plans/2026-08-12-mobile-layout-design.md

@@ -0,0 +1,77 @@
+# 移动端（窄视口 <768px）侧边栏布局设计
+
+**日期**：2026-08-12
+**状态**：已实施（本文档含实施偏差记录）
+**目标版本**：v0.7.0
+
+## 1. 目标
+
+按**视口宽度**（<768px——"真正的移动端宽度"，刻意不对齐宿主 1024 断点）切换移动端侧边栏体验：
+
+1. 移动端**不提供底部面板按钮**（右上角按钮簇只剩一枚右侧面板开关）。
+2. **合并显示 = 只显示右侧栏**：进入窄屏时底部面板的标签页**直接并入右侧栏**（一次性状态迁移），右侧栏成为全宽抽屉，底部面板浮层整体不存在。
+3. 附带移动端优化：新会话默认收起抽屉、文件/外链打开自动展开、宽度拖动条禁用、布局不挤压（抽屉悬浮）、窄屏标签收窄。
+
+## 2. 非目标
+
+- 不改持久化 schema：`bottomOpen` / `bottomHeight` / `bottomSplits` 字段原样保留。
+- 不改桌面行为：≥768px 时双面板布局与之前完全一致（含布局挤压、拐角、底部首展自动终端）。
+- 不改公开服务 API、PrefsSchema、host 半。
+- 不处理 DSH 详情栏（宿主让步链在 <~996px 自动关闭详情栏，与本改动无交互）。
+
+## 3. 现状回顾
+
+- `Sidebar.tsx` 渲染两个独立浮层：右侧面板（全高、宽度可拖、布局挤压 `--dsh-sidebar-width`）与底部面板（只挤中间列、高度可拖、右上角按钮簇双按钮、共享拐角）。
+- 底部面板状态字段：`bottomOpen` / `bottomHeight`（钳制 `[BOTTOM_MIN, innerHeight-PANEL_MIN]`）/ `bottomOpenedOnce` / `bottomSplits`（独立 split 树，pane/tab id 全局唯一）。
+- 首次展开底部面板自动开终端（`bottomPanelAutoTerminal` pref）。
+
+## 4. 设计
+
+### 4.1 断点模块（新 `src/client/breakpoints.ts`）
+
+- `NARROW_MAX_WIDTH = 768`；`isNarrowWidth(width)` 纯函数；`useNarrowViewport()` hook（初始读 `window.innerWidth`，resize + rAF 节流，`typeof window` 守卫；不用 matchMedia——jsdom 未实现）。
+- CSS 侧配对 `@media (max-width: 767px)`（767 ≡ <768），两端注释互指。
+- 刻意**不对齐**宿主 `SIDEBAR_AUTO_COLLAPSE = 1024`：1024px 窗口（小笔记本、分屏）保留桌面双面板；只有手机/竖屏平板才进移动布局。
+
+### 4.2 合并 = 底部标签并入右侧栏（状态迁移）
+
+- **新 reducer `migrateBottomTabs(state)`**（`state.ts`）：
+  - 底部树所有标签按深度优先序**追加到右侧树第一个 leaf**（`firstLeaf(splits)`）的标签条；
+  - 底部树清空（结构保留——桌面端回显欢迎卡片）、`bottomOpen=false`、`activePane` 指向右侧树第一个 leaf（保证迁移后新开的标签落在可见面板）；
+  - 幂等：底部无标签且面板已关且 activePane 不在底部树时返回同一引用。
+- **Sidebar 触发 effect**：`narrow && sessionId 已定义` 时执行（覆盖：窄屏挂载、会话切换、桌面→窄屏过渡）；幂等性保证其自然收敛，不循环。
+- 迁移是**永久**的（符合"直接丢到右侧栏中"）：回桌面后标签仍留在右侧树，底部面板为空（欢迎卡片）；用户可在桌面重新往底部面板开标签，再进窄屏会再次迁移。
+- 迁移后右侧栏用**现有 `Workbench` 原样渲染**——零视图层特判、零 action 路由修补（标签真实住在右侧树，close/activate/drag 全部走原路径）。
+
+### 4.3 窄屏渲染（`Sidebar.tsx`）
+
+- 面板宽度 `100vw`（全宽抽屉）；`--dsh-sidebar-*` 布局变量恒 0（抽屉悬浮，不挤压 AppFrame）；宽度拖动条、底部浮层、`bottomClose`、拐角、底部面板按钮全部不渲染。
+- `visible` 语义回到原始：底部树只在桌面底部面板场景（`bottomOpen && active`）——窄屏下底部树为空且不渲染。
+- 底部首展自动终端 effect 加 `narrow` 守卫。
+
+### 4.4 行为修正
+
+- `state.ts` `loadState`：窄屏新会话默认 `panelOpen=false`（首开才生效；用户手动展开后照常持久化）。
+- `service.ts` `openTab`：窄屏且 seed 带 `path`/`url` 且面板收起 → 自动展开抽屉（dedupe-focus 分支同样生效）；纯类型打开不展开；宽屏行为不变。
+
+### 4.5 样式（`sidebar.module.css`）
+
+- `@media (max-width: 767px)`：开放面板标签条预留宽度 72px → 40px（按钮簇只剩一枚）；`.tab` min/max 宽收窄（48/128px）。
+
+### 4.6 测试
+
+- `tests/breakpoints.spec.ts`：断点边界（767 窄 / 768 宽；1024 明确为宽）。
+- `tests/unit.spec.ts`：`migrateBottomTabs` 4 例（并入第一 leaf 且底部清空/面板关/activePane 重指、右树为 split 时并入最左 leaf、幂等性、空底部树但 activePane 在底部树时重指）+ 窄屏新会话默认收起（stub `window.innerWidth=390`）。
+- `tests/service.spec.ts`：窄屏 auto-expand 5 例（390 < 768 仍窄）。
+
+## 5. 边界情况
+
+- 迁移触发：窄屏挂载 / 会话切换 / 桌面→窄屏过渡，均由同一 effect 覆盖；幂等保证收敛。
+- 迁移后新开标签：`activePane` 已重指右侧树第一 leaf，`openTabInActivePane` 必落在可见面板（含"空底部树但 activePane 指向它"的陈旧指针场景）。
+- 跨断点往返：迁移永久；桌面底部面板空显欢迎卡片；`bottomHeight` 不受影响。
+- jsdom 兼容：hook 不用 matchMedia；既有测试 stub `innerWidth=1024` 自动走桌面路径，零行为变化。
+
+## 6. 实施偏差记录
+
+- **v1（已提交 b391ebf，用户反馈推翻）**：合并 = 单面板内上下堆叠两个工作台（`MobileWorkbench` + 可拖分隔条，高度复用 `bottomHeight`），断点 1024（对齐宿主）。用户明确：合并 = 只显示右侧栏、底部标签直接丢进右侧栏；窄屏 = 真窄屏、不对齐 1024。
+- **v2（本文档，最终形态）**：删除 `MobileWorkbench`（组件 + CSS + spec），改为 `migrateBottomTabs` 状态迁移 + 现有 `Workbench` 渲染；断点 768。`bottomHeight` 不再参与移动端布局（仅桌面底部面板使用）。

docs/plans/2026-08-12-subagent-background-tasks-design.md

@@ -0,0 +1,43 @@
+# 任务管理页后台命令区块（查看输出 + 强制终止）设计
+
+> 2026-08-12 · v0.8.0
+
+## 目标
+
+任务管理页（当前树的主代理拓扑，原「子代理」页）在拓扑树下方同页显示**当前树全部会话**（主代理 + 子代理）的后台任务：
+
+- 点击任务行，输出显示在**侧边栏底部共享 Dock**（sticky 终端式，滚动时保持可见；运行中每 2s 轮询，页面不可见时暂停；自动跟随底部）；
+- 运行中的任务行带两击确认的终止按钮；
+- **不破坏模型契约、不修改 DSH 源码**（本仓库规则：对官方源码 checkout 零写入，挂载只走 cordis.patch.yml + profile 机制）：输出查看是**模型已读输出的回放**，绝不推进 `task_output` 的读取游标。
+
+## 数据流
+
+```
+bash/tool  run_in_background → ctx.tasks.start（owner = 执行 agent）
+api-proxy  session/tasks 帧（TaskView[]，无输出）→ 客户端 tasksBySession 镜像
+SubagentView 读镜像 → collectTreeTasks(树内会话) → 行渲染（单 Dock，选中行）
+点行 → POST /sidebar/api/tasks.output（事件回放）→ 扫描属主会话 events 里
+        task_output 的 tool/call + tool/result 对 → 模型已读文本
+终止 → POST /sidebar/api/tasks.kill → ctx.tasks.kill（DSH 现成 API）
+```
+
+## 关键决策
+
+1. **输出 = 会话事件回放，零 DSH 写入**：`TaskService.read()` 是单一消费游标——UI 直接读会偷走模型 `task_output` 的字节（或读到空）。而 DSH 源码禁止修改，所以 `tasks.output` **不碰注册表**：扫描属主会话的 append-only 事件日志，取 `task_output` 调用的 `tool/call`（`arguments.task_id` 配对）与其 `tool/result`（finalize 后的文本，即模型实际收到的内容）按序拼接；`"(no new output)"` 增量与错误结果跳过；`read: false` 表示模型尚未读过。模型游标天然不被触碰。
+   - 语义代价（用户已确认接受）：面板只在模型读过之后才有内容——没有实时流。
+2. **列表不新增路由**：任务清单由 harness 的 `session/tasks` 推送镜像提供；只加 `tasks.output`（回放）与 `tasks.kill`（注册表原生 `kill`）两个路由（信任围栏与其余路由一致）。注册表缺席时 kill 降级 503（output 不需要注册表）。
+3. **终止的访问围栏**：caller 由请求的 `sessionId` 现场解析 `ctx.agents.get(sessionId)`，注册表按 owner session id 拒绝 foreign 任务；未知/foreign 统一映射 404 `task-error`。
+4. **展示范围 = 整棵树**：与页面作用域一致（拓扑即当前树）；树跨多会话时行尾显示属主标题。
+5. **单共享 Dock（大量任务的形态）**：行内展开会让列表随任务数膨胀、排序变化时面板跳动；改为一个底部 sticky Dock + 单一轮询实例，行保持紧凑、排序变动不惊吓，选中行高亮。
+6. **两击确认终止**：首次点击进入「再次点击确认」态（3s 自动解除），防止误杀长任务。
+7. **输出上限**：路由按 `readLimit`（默认 512KB）截断并置 `truncated` 标记。
+
+## 实施偏差
+
+- 曾实现 harness 侧非消费 peek 缝隙（`BashProcess.peekOutput` / `TaskService.peek`），因「禁止修改 DSH 源码」规则**整体回退**（harness 提交已 reset，checkout 恢复纯净快照），改用事件回放。
+- 宿主不新增 `@deepseek-ai/*` 依赖（`ctx.tasks`/`ctx.agents` 走结构性镜像 + 运行时 `ctx.get`，可选服务降级 503）；`ctx.sessions.get(id).events` 为只读访问。
+
+## 验证
+
+- 插件单测：tasks-routes（回放拼接/过滤/read 标志/截断/404/503 降级）；subagent-tasks 纯函数；jsdom 视图（行渲染、单 Dock 切换、关闭、两击终止、read:false 提示、大量任务、隐藏不轮询、镜像清空 hook 顺序回归 #300）。
+- 集成（真实 dsh web）：启动 `run_in_background` bash → 模型 `task_output` 读取 → `/sidebar/api/tasks.output` 返回模型已读内容 → `/sidebar/api/tasks.kill` 后进程退出、任务结算 `killed (signal: SIGTERM)`。

docs/plans/2026-08-14-add-plugins-modal-design.md

@@ -0,0 +1,69 @@
+# 「添加插件」弹窗 + 推荐插件列表 + 复制安装命令 设计
+
+**日期**：2026-08-14
+**状态**：已批准，已实施
+**作者**：opencode + 用户
+**当前版本**：v0.12.0（分支 `feat/plugin-api-v012`，已合入 main 后 rebase）
+**目标版本**：v0.12.0（不 bump）
+
+## 1. 目标
+
+1. 为「侧边栏内容（Tab）」与「文件预览（viewer）」两类扩展点分别增加**添加入口**：DSH 设置页「Side card」分区的两个响应式网格（侧边栏内容 / 文件预览）末尾各新增一个与其他卡片同尺寸的**虚线边框**添加卡片（「添加 Tab 插件」/「添加预览插件」）。
+2. 点击后弹出对应 kind 的原生 Modal：声明该类扩展点可由插件扩展（`ctx.betterSidebar` 服务），提供「在 GitHub 上浏览更多插件」**按钮**（打开 `https://github.com/topics/dsh-better-sidebar`，新标签页），并展示仓库**推荐**的同 kind 插件列表（名字 / url / 简介 / 安装脚本）。
+3. 每个条目两个动作：**「跳转」按钮**（`window.open` 新标签页直达插件仓库，绕过链接接管）与**「复制」按钮**——点击只把安装脚本写入剪贴板（`writeClipboard`，按钮闪现「已复制」反馈），用户自行粘贴到 DSH 所在环境的终端执行。
+4. **不关闭任何窗口、不打开终端、无失败路径**：复制是纯 client 动作，不依赖会话/终端/配额，弹窗保持打开可连续复制多个插件。
+5. 推荐列表为仓库静态数据、**分为两个文件**（`plugins-tabs.ts` Tab 注册目录 / `plugins-viewers.ts` 文件预览注册目录），初始在 viewer 目录收录唯一真实三方插件 `@huanlin/dsh-plugin-better-sidebar-plugin-office`（简介不注版本前提）；后续插件只加一条数据。
+6. 内置 Office 预览（docx/xlsx/pptx）**从本体移除**——已迁至上述推荐插件（见偏差记录），`docx/xlsx/pptx` 文件在未装插件时落 code/下载兜底。
+
+## 2. 非目标（Out of Scope）
+
+- **不打开终端**：不做终端预填安装流（曾实现的 `OpenTabSeed.expand`、`TerminalSeedMeta` 预填/提示条、service meta 透传等已全部删除回滚）。
+- 不加 + 菜单入口、不加编辑器空态入口（入口只在设置页）。
+- 不做插件在线拉取 / 动态发现（列表为仓库推荐静态数据）。
+- 不改 host 半的服务契约（`service.ts` 相对 v0.12.0 无 API 变化；host 半仅在 office 移除时缩减了 chunk 白名单）。
+
+## 3. 实施要点
+
+### 3.1 数据层：两个目录文件 + 共享词汇
+
+- `src/client/plugins-shared.ts`：`PluginEntry { id, name, url, description, install }` + `PLUGIN_TOPIC_URL`。
+- `src/client/plugins-tabs.ts`：`builtinTabPlugins`（收录 dsh-sentinel——条件驱动的 agent 唤醒系统，注册 `dsh-sentinel:watches` Tab；install 用官方 github: 源一键命令）。
+- `src/client/plugins-viewers.ts`：`builtinViewerPlugins`（种子：office 插件，install = `cd ~/.dsh && dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office`）。
+
+### 3.2 UI 层：`src/client/add-plugin-modal.tsx` + `SideCardSection`
+
+- 两个网格末尾各一个虚线卡片（复用 `.card` 配方 + `IconPlusOutline16`），`addPluginsOpen: PluginKind | null` 状态；Modal 仅在打开时条件挂载（Modal 原语无条件跑 hooks，SSR 规则同 settingsFor）。
+- `PluginListBody`（提取组件，直接可测）：topic 按钮（`window.open`）+「推荐插件」分组（`groupHeading` + count）+ 条目（名字链接 / 简介 / mono 安装命令 / 跳转按钮 / 复制按钮）+ 空态。
+- **复制**：`void writeClipboard(entry.install)` + `copiedId` 状态闪现 `t('copied')`（1.5s 后还原）。不关闭、不打开、不抛错。
+
+### 3.3 i18n
+
+新增键：`addPluginsTabCard/TabCardDesc/ViewerCard/ViewerCardDesc/TabDesc/ViewerDesc`、`addPluginsBrowseMore`、`addPluginsRecommended`（推荐插件）、`addPluginsEmpty`、`openPlugin`（跳转）、`copyInstall`（复制安装命令，按钮 aria-label）；复用 `copy`/`copied`/`close`/`settingsDone`。已删除废弃键：`install`、`installNotice`、`installError*`、office 相关键（`viewerDocx/Xlsx/Pptx`、`officeTooLarge/Corrupt/Encrypted/LoadFailed`、`previousSlide/nextSlide/zoom/zoomHint`）。
+
+### 3.4 内置 Office 预览移除（与推荐插件衔接）
+
+删除 3 个 viewer 描述符 + 10 个源文件（docx-view/xlsx-view/PptxView/office-view/office-shared/office-types/xlsx-to-univer + chunks/docx|xlsx|pptx）+ 3 个图标 + office CSS + office locale 键；chunk 白名单 5→2（terminal/editor，同步 `bundle-route.ts` / `chunk-loader.ts` / `tsdown.config.ts` / `scripts/package-registry.mjs`）；`tests/builtins.spec.ts` 断言 6 个 viewer 且不含 office id。`.docx`（zip、无 NUL）未装插件时落 code 兜底。
+
+## 4. 边界情况与失败模式
+
+- **复制失败**：`writeClipboard` 尽力而为（navigator.clipboard → execCommand 兜底），失败静默；按钮反馈照常闪现。无会话/无终端/配额等一切前置条件均不涉及——复制与它们无关。
+- **空目录**：目录可为空（弹窗渲染空态 + topic 按钮）；当前 Tab/Viewer 目录各有 1 条。
+- **版本号**：v0.12.0（`package.json` / `dsh.plugin.json` / `service.ts` 的 `SIDEBAR_SERVICE_VERSION` 三处一致，manifest-consistency 测试守护）。
+
+## 5. 实施偏差记录
+
+- **评审修改（第一批）**：入口由 + 菜单/编辑器空态改为**仅设置页虚线卡片**；安装命令并入「安装按钮」单一交互。
+- **评审修改（第二批）**：① topic 链接改为**按钮**（`window.open` 新标签页）；② 添加按钮拆为**两个**（Tab 注册 / 文件预览注册），列表数据拆为**两个文件**；③ 安装错误只内联显示在设置内（预检 + try/catch）；④ 终端提示条用品牌高亮色。
+- **评审修改（第三批）**：内置 Office 预览整体移除（迁至推荐插件）；「内置插件」全部改名**「推荐插件」**。
+- **评审修改（第四批，最终形态）**：设置窗口关闭问题无法根治（openTab 的 store 涟漪会复活弹窗），且用户实测弹窗关闭不可靠——**放弃终端安装流**：安装按钮改为**只复制安装脚本**（`writeClipboard` + 「已复制」反馈），弹窗保持打开；随之删除整个终端预填流：`terminal-meta.ts`、`TerminalView` 的 meta/预填/提示条、`tabs.tsx` 的 meta 透传与 `uiTerminalCount` 导出、`service.ts` 的 `OpenTabSeed.expand` 与 createTab meta 透传（全部回滚到 v0.12.0 原始 API 面）、`.terminalNotice` CSS、相关测试与文档；`install`/`installNotice`/`installError*` 文案键删除，新增 `copyInstall`。
+- 测试中 `AddPluginModal` 不能 renderToString（React 18 server renderer 拒绝 portal），改为 createRoot + act 挂载后断言 `document.body`（portal 落点）。
+
+## 6. 验收清单
+
+- [x] 设置页两个网格末尾各出现虚线边框添加卡片，尺寸与既有卡片一致
+- [x] 两个弹窗（kind 区分）：声明文案 + GitHub topic **按钮** + 对应推荐插件条目（名字/url/简介/安装命令/跳转按钮/复制按钮）
+- [x] 点「复制」：安装脚本写入剪贴板，按钮闪现「已复制」，弹窗不关闭、不打开终端、无失败路径
+- [x] 点「跳转」：`window.open` 新标签页直达插件仓库
+- [x] 内置 Office 预览已移除；chunk 白名单 2 个；无「内置插件」残留文案
+- [x] 版本号 v0.12.0 三处一致；`pnpm typecheck` / `pnpm test` / `pnpm build` 全绿
+- [x] README/README_EN/AGENTS.md 更新到位

docs/plans/2026-08-14-issue-42-verify-design.md

@@ -0,0 +1,63 @@
+# Issue #42 诊断与收尾记录（底部面板首展自动终端 → 整面板空白）
+
+**日期**：2026-08-14
+**状态**：已诊断、已收尾（无新代码修复；回归测试 + 文档交付）
+**关联**：issue #42、issue #25（同根因）、issue #31（放大器）、PR #27 / commit 37d91be、commit 9aeb046
+**目标版本**：v0.11.0（根因修复已发布）
+
+## 1. 问题报告
+
+[issue #42](https://github.com/omdsh-dev/DSH-better-sidebar/issues/42)（Windows 11 / QQBrowser / dsh-launcher 宿主 / 插件 0.10.3）：
+
+1. 全新安装后重启 + 硬刷新，首次展开底部面板（`bottomPanelAutoTerminal` 默认开）→ **整个底部面板空白，连标签栏都没有**；
+2. 控制台两条关键报错：
+   - `Uncaught TypeError: Cannot read properties of undefined (reading 'dimensions')`（`Viewport._innerRefresh`）
+   - `Uncaught TypeError: Cannot read properties of undefined (reading 'handleResize')`（`IdleTaskQueue._process`）
+3. 关闭「底部面板首次展开自动开终端」后一切正常；右侧栏终端一直正常；
+4. 附带问题：Windows 无控制台宿主下每次关闭终端，服务器日志出现 `Error: AttachConsole failed`（node-pty `conpty_console_list_agent.js`）。
+
+## 2. 诊断结论
+
+### 2.1 根因 = issue #25 的同一 bug
+
+与 [issue #25](https://github.com/omdsh-dev/DSH-better-sidebar/issues/25)（WKWebView 底部面板终端空白）完全同源，证据链：
+
+- **触发路径一致**：`Sidebar.tsx` 的「底部面板首次展开自动开终端」effect（`bottomOpenedOnce` 过渡）在面板 slide-in transition 的**同一次 commit** 挂载 `TerminalView`。`docs/plans/2026-08-14-terminal-open-when-sized-design.md` §3 在设计 #25 修复时已明确把该路径列为零尺寸挂载路径之一。
+- **崩溃签名逐字一致**：0.10.3 的 `TerminalView` 挂载 effect 同步执行 `term.open(host); fit.fit()`（无尺寸守卫）。xterm 5.3.0 在零尺寸容器 open 时渲染器创建失败，`RenderService._renderer` 保持 undefined → `Viewport._innerRefresh` 读 `_renderService.dimensions`（getter 即 `_renderer.value.dimensions`）、idle 任务读 `handleResize` 全部抛 "Cannot read properties of undefined"——与 #42 两条报错逐字对应。
+- **平台差异只是时序**：#25 设计文档注明「Chrome（Blink）对零尺寸布局更宽容所以不崩；WKWebView 稳定复现」。QQBrowser（Chromium fork）在 Windows + launcher 启动的组合下命中同一零尺寸窗口期，属边界时序，不是新缺陷。
+- **版本差**：#42 报告针对 **0.10.3**（2026-08-13 发布）；根因修复 37d91be（PR #27）于 2026-08-14 合并并随 **v0.11.0** 发布（早于 #42 提交约 1 小时，晚于 reporter 安装的版本）。
+
+### 2.2 修复覆盖路径（无需新代码）
+
+| 层 | 机制 | 位置 | 状态 |
+|---|---|---|---|
+| 根因（零尺寸 open） | `openWhenSized`：`term.open + fit + sendResize` 推迟到容器有尺寸后恰好执行一次；RO/字体订阅的 `fit()` 全部 try/catch 加固 | `src/client/open-when-sized.ts` + `TerminalView.tsx`（37d91be，v0.11.0） | 已发布 |
+| 根因单测 | 手动步进 rAF 的 6 个用例（延迟/一次性/单维缺失/cancel/脱离文档/异常传播） | `tests/open-when-sized.spec.ts` | 已提交 |
+| 「整面板空白」放大器 | per-tab `RenderBoundary` 崩溃隔离（单 tab 崩溃只显示该 pane 内条带，toggle 簇/其他 tab/面板存活）+ 根 boundary 兜底 + layout-push CSS 变量卸载清理 | `src/client/RenderBoundary.tsx`、`Sidebar.tsx`、`index.tsx`（9aeb046，#31） | 已提交 |
+| 隔离测试 | 崩溃条带/重试恢复/布局变量清理 | `tests/sidebar-crash.spec.tsx` | 已提交 |
+| **#42 触发链回归** | 底部面板首展自动开终端：恰好一个 terminal tab 落在底部工作树、`bottomOpenedOnce` 原子置位、pref / 类型禁用双门控、面板完整存活 | `tests/bottom-auto-terminal.spec.tsx`（本次新增，4 例） | 本次提交 |
+
+三者合起来构成 #42 全链回归保护：触发链（本测试）→ 零尺寸延迟（openWhenSized 单测）→ 崩溃隔离（containment 测试）。
+
+## 3. 附带问题：AttachConsole 报错（仅文档化）
+
+`Error: AttachConsole failed`（node-pty `conpty_console_list_agent.js`）是 **node-pty 上游行为**：`kill()` 清理路径 fork 的 console-list 辅助进程在无控制台宿主（launcher/服务方式启动的 `dsh`）下 `AttachConsole(shellPid)` 失败。终端功能本身不受影响（spawn/输入输出正常），仅刷服务器日志。
+
+- 插件侧不可消除：不改 DSH 源码、不 patch node-pty 依赖是仓库硬约束（见 AGENTS.md §0），且 `IPty.kill()` 是 node-pty 的唯一 kill 通道；
+- 建议：保持现状（无功能影响），上游如提供无控制台规避选项再跟进；reporter 若在意日志噪音，可反馈 microsoft/node-pty。
+
+> 交叉引用（issue #140）：与本文档「仅刷日志」不同，**依赖缺失/损坏**（node-pty 安装不完整导致模块加载失败）已有插件侧降级处理——宿主半懒加载 node-pty，失败时终端 tab 显示可复制的修复命令（`scripts/install.sh --repair` / `install.ps1 -Repair`），详见 `src/pty-deps.ts` 与 `tests/pty-deps.spec.ts`。
+
+## 4. 验证
+
+- 全量测试：`pnpm test` → 34 文件 / 430 例全部通过（基线 425 + 同期 PR #43 的 html 盘符修复 1 例 + 本次新增 4 例）；
+- `pnpm typecheck`（`tsc --noEmit`）通过；
+- `pnpm build`（`tsc -p tsconfig.build.json && tsdown`）通过。
+
+## 5. Issue #42 回复草稿（供 maintainer 发布/关闭用）
+
+> 感谢复现与详细报告。诊断结论：**这是 issue #25 同一根因在不同平台的复现**——底部面板首次展开自动开终端时，终端在容器尚为零尺寸（面板 slide-in 窗口期）就执行了 xterm `Terminal.open()`，渲染器创建失败导致后续 `Viewport._innerRefresh` / 空闲任务读取 `.dimensions` / `.handleResize` 崩溃（与 #25 的控制台报错逐字一致）。
+>
+> 该根因已在 **v0.11.0** 修复（终端延迟到容器有尺寸后再 open，PR #27）；「整个面板空白」的放大器也已在最新 main 消除（单 tab 崩溃隔离 + 布局变量清理，issue #31）。**请升级到 v0.11.0 验证**：预期首次展开自动开终端不再空白；若仍复现，请提供 v0.11.0 下的控制台报错。
+>
+> 附带问题（`AttachConsole failed` 日志噪音）确认为 node-pty 在无控制台宿主（launcher 启动）下的上游行为，无功能影响，插件侧无法在不改动 node-pty/DSH 的前提下消除；已文档化（`docs/plans/2026-08-14-issue-42-verify-design.md`），并已补 #42 触发链回归测试。

docs/plans/2026-08-14-terminal-font-design.md

@@ -0,0 +1,111 @@
+# 终端自定义字体（设置页二级设置）设计
+
+**日期**：2026-08-14
+**状态**：已实施（本文档含实施偏差记录）
+**目标版本**：v0.11.0
+
+## 1. 目标
+
+在 DSH 设置页「侧边卡片」分区中，终端 tab 卡片的二级设置弹窗（齿轮按钮，README 所称"终端卡片二级设置"）新增两行：
+
+1. **终端字体**（text 输入）：自定义 CSS font-family stack，如 `"JetBrains Mono", monospace`；留空 = 跟随主题等宽字体（`--ds-font-family-code` token）。
+2. **终端字号**（number 输入）：9–32px，默认 13，带 `px` 后缀。
+
+配置持久化到 `SidebarPrefs`（`dsh-better-sidebar` 命名空间，host 侧 PrefsSchema 校验），对**所有已打开终端实时生效**（UI tab 与 agent tab 共用 TerminalView）：设置页提交 → `store.setPrefs` 通知 → xterm `options.fontFamily/fontSize` 更新 + 重排网格。
+
+## 2. 非目标
+
+- 不在终端视图内加菜单/按钮（用户明确选择仅设置页齿轮弹窗）。
+- 不做 per-tab / per-terminal 隔离（全局偏好，与 SidebarPrefs 现有语义一致）。
+- 不自动给字体族加引号、不做字体合法性嗅探（用户负责合法 CSS font-family；placeholder 示范格式）。
+- 不改 pty / WS / 终端连接生命周期：字体变化不重连、不重启 shell。
+
+## 3. 现状回顾
+
+- 终端描述符（`builtins/tabs.tsx`）的 `settings.toggles` 只支持**布尔开关**（`SidebarSettingToggle` 无类型字段），`FeatureSettingsRows`（`SideCardSection.tsx`）只渲染 Switch 行。
+- `SidebarPrefs` / `PrefsSchema` / `parsePrefs` 三处同步维护（`prefs-shared.ts` / `config.ts` / `client/prefs.ts`）。
+- `TerminalView` 硬编码 `fontSize: 13` + `fontFamily: tokenValue('--ds-font-family-code') || 内置栈`，且不响应偏好变化。
+
+## 4. 设计
+
+### 4.1 偏好扩展（`prefs-shared.ts` / `config.ts` / `client/prefs.ts`）
+
+```ts
+interface SidebarPrefs {
+  // …
+  terminalFontFamily: string   // '' = 跟随主题等宽字体
+  terminalFontSize: number     // 9–32，默认 13
+}
+
+// prefs-shared.ts
+export const TERMINAL_FONT_SIZE_MIN = 9
+export const TERMINAL_FONT_SIZE_MAX = 32
+export const TERMINAL_FONT_SIZE_DEFAULT = 13
+export function clampTerminalFontSize(value: number): number // round + clamp（仿 clampWidthPercent）
+```
+
+- `PrefsSchema`：`terminalFontFamily: z.string().default('')`、`terminalFontSize: z.number().step(1).min(9).max(32).default(13)` —— 旧文档解析自动补默认，无迁移。
+- `parsePrefs`：family 需 string 否则默认；size 需有限数并 `clampTerminalFontSize` 否则默认。
+
+### 4.2 声明式 API 扩展（`client/service.ts`，向后兼容）
+
+```ts
+type SidebarSettingToggleType = 'switch' | 'text' | 'number'
+
+interface SidebarSettingToggle {
+  key: string
+  title: string | (() => string)
+  desc?: string | (() => string)
+  type?: SidebarSettingToggleType   // 缺省 'switch'，外部插件现有用法不变
+  min?: number                      // number 行的下限（提交时钳制）
+  max?: number                      // number 行的上限
+  placeholder?: string              // text 行的占位符
+  unit?: string                     // 输入框后的单位后缀（如 'px'）
+}
+```
+
+### 4.3 终端描述符声明（`builtins/tabs.tsx`）
+
+`settings.toggles` 追加两行：`{ key: 'terminalFontFamily', type: 'text', placeholder: … }` 与 `{ key: 'terminalFontSize', type: 'number', min: 9, max: 32, unit: 'px' }`（标题/描述走 locales）。
+
+### 4.4 设置行渲染（`SideCardSection.tsx` + CSS）
+
+- `FeatureSettingsRows` 按 `toggle.type` 分支：`switch` 走现有 Switch 行；`text`/`number` 走新 `TypedRow`（局部 draft state，`Input` 原语，blur/Enter 提交，number 行带 unit 后缀）。
+- `TypedRow` 的 `key` 含**已提交值**：提交失败 → prefs 回滚 → key 变化 → 行重挂载为存储值（输入中 draft 不因 key 变化被打断，因为 key 只随已提交值变）。
+- 父级 `onCommitSetting(toggle, raw): string`：number 解析+钳制（非法/空 → 走 `Number('')=0` 钳到下限，与宽度行 `commitWidth` 先例一致）；text 原样；乐观 `setPrefs` → `commit` → 失败 `applyOutcome` 回滚（复用既有 `applyPref` 管道，原 `togglePref` 更名）。
+
+### 4.5 终端消费（`client/terminal-font.ts` 新模块 + `TerminalView.tsx`）
+
+```ts
+// terminal-font.ts（纯函数，可单测）
+export const DEFAULT_TERMINAL_FONT_FAMILY = '"SF Mono", Menlo, Consolas, "Liberation Mono", monospace'
+export function resolveTerminalFont(prefs, themeFontFamily):
+  { fontFamily: 非空用户值 ?? themeFontFamily ?? 内置栈, fontSize: clampTerminalFontSize(prefs.terminalFontSize) }
+```
+
+- `TerminalView` 构造 Terminal 时用解析值；主 effect 内 `store.subscribe` 回调 diff `term.options.fontFamily/fontSize`，变化则更新 options + `fit.fit()` + `sendResize()`（网格尺寸随字体变化）；cleanup 退订。懒加载 chunk 无新增依赖（store 为运行时 prop）。
+
+### 4.6 i18n（`locales.ts`）
+
+zh/en 各新增：`settingsFontFamilyTitle/Desc/Placeholder`、`settingsFontSizeTitle/Desc/Suffix`（px）。
+
+## 5. 测试
+
+- `tests/unit.spec.ts`：`parsePrefs`/`loadPrefs` 新字段（合法 string 直通、越界钳制 9/32、非 number 回退、缺省默认）；全等字面量补字段。
+- `tests/plugin-shape.spec.ts`：PrefsSchema 默认值 + overridden 全等。
+- `tests/builtins.spec.ts`：终端 toggles keys = 4 个，后两个 type/min/max 断言。
+- `tests/smoke.spec.ts`：settings.get 全默认字面量补字段。
+- `tests/side-card-section.spec.tsx`（SSR）：text/number 行渲染（value/min/max/placeholder/unit，非 checkbox）。
+- `tests/side-card-section-rows.spec.tsx`（新，jsdom + createRoot）：blur 提交回调、number 钳制、空输入钳到下限、提交失败回滚草稿（key 重挂载）。
+- `tests/terminal-font.spec.ts`（新）：`resolveTerminalFont` 回退链 + `clampTerminalFontSize`。
+
+## 6. 限制与取舍
+
+- 外部插件的自定义 toggle key 照旧被 host PrefsSchema 校验丢弃（现有 seam 行为）；`type: 'text'/'number'` 是公开 API 扩展，外部插件可用但 key 仍须是宿主 schema 字段。
+- number 输入的"非法值"在浏览器里只会以空串出现（number input 拒绝非数字字符），因此 `Number('')=0 → 钳到下限` 是唯一可达路径，与宽度行先例一致。
+- 字号实时生效依赖 xterm 的 options setter + re-fit；若未来 xterm 版本行为变化，回退方案是重建 Terminal（不推荐，会丢滚动缓冲）。
+
+## 7. 实施偏差记录
+
+- 计划中的"非法输入回退当前存储值"用例在实现中发现不可达（浏览器 number input 的值清洗），改为断言"空输入钳到下限"（与宽度行一致）。
+- `togglePref` 更名为 `applyPref`（它本就接受任意 patch，不只是布尔翻转）。

docs/plans/2026-08-14-terminal-open-when-sized-design.md

@@ -0,0 +1,90 @@
+# 终端延迟初始化（零尺寸容器 xterm open 崩溃修复）设计
+
+**日期**：2026-08-14
+**状态**：已实施（本文档含实施偏差记录）
+**目标版本**：v0.11.x（issue #25 修复）
+
+## 1. 目标
+
+修复 [issue #25](https://github.com/omdsh-dev/DSH-better-sidebar/issues/25)：WKWebView 下点击「展开底部面板」后底部面板内容空白、无终端，控制台报 `Cannot read properties of undefined (reading 'dimensions')` 与 `(reading 'handleResize')`。
+
+根因：`TerminalView` 的挂载 effect 在容器可能为零尺寸时**同步**执行 `term.open(host); fit.fit()`。xterm 5.3.0 在零尺寸容器里 open 时渲染器创建失败，`RenderService._renderer.value` 保持 undefined，随后 Viewport 的 `_innerRefresh` 读 `_renderService.dimensions`（getter 即 `_renderer.value.dimensions`）崩溃。Chrome（Blink）对零尺寸布局更宽容所以不崩；WKWebView 稳定复现。
+
+修复：把 `term.open(host)` + `fit.fit()` 推迟到容器有实际尺寸之后再执行（xterm 在隐藏/零尺寸容器初始化的标准修法），open 恰好执行一次。
+
+## 2. 非目标
+
+- 不换 xterm 渲染器（打包产物只有 DomRenderer 是现状，不是本次根因；`rendererType` 保持默认）。
+- 不改 pty / WS / 终端连接生命周期：推迟 open 不推迟连接、不重启 shell、不丢 transcript。
+- 不改 host 半与 chunk 打包结构（新模块随 terminal chunk 打入 `lib/client-terminal.js`）。
+- 不 bump 版本号（release 流程负责）。
+
+## 3. 现状回顾
+
+- `src/client/TerminalView.tsx` 第 99–101 行同步 `term.open(host); fit.fit()`。
+- 零尺寸挂载路径真实存在且不止一条：
+  - 底部面板首次展开自动开终端（`Sidebar.tsx` 的 `bottomOpenedOnce` effect）在面板 slide-in transition 的同一次 commit 挂载 TerminalView，WKWebView 下此刻 host 高度为 0；
+  - 所有 tab 保持挂载（`split-pane.tsx`：非激活 tab 用 `.paneTabHidden { display: none }` 隐藏），面板折叠时保持挂载（`.panelHidden`）——任何 `display:none` / 零尺寸祖先都会踩同一坑。
+- 前提已验证（xterm 5.3.0 与 @xterm/addon-fit 0.10.0 源码）：
+  - `FitAddon.fit()` 在 open 之前是安全 no-op（`proposeDimensions` 先查 `this._terminal.element`，undefined 即返回）。
+  - `WriteBuffer.write()` 不依赖 open 状态：数据解析进 buffer，open 后渲染——推迟 open 不丢初始 transcript。
+  - `TerminalView` 已有的 ResizeObserver / 字体订阅里的 `fit.fit()` 在 open 前 no-op、open 后照常 re-fit，无需改动。
+
+## 4. 设计
+
+### 4.1 新模块 `src/client/open-when-sized.ts`（纯逻辑，可单测）
+
+```ts
+export function openWhenSized(
+  host: HTMLElement,
+  open: () => void,
+  raf: (cb: FrameRequestCallback) => number = requestAnimationFrame,
+  caf: (id: number) => void = cancelAnimationFrame,
+): () => void
+```
+
+- 单条代码路径：`raf(step)` → step 检查 `host.isConnected`（false 则停止，防卸载后空转）→ `clientWidth > 0 && clientHeight > 0` 则调 `open()` 并停止；否则再排一帧。
+- 返回 cancel：`caf(frame)` 并置空（幂等），cleanup 调用。
+- helper 不 try/catch（保持纯净），异常由调用方处理。
+
+### 4.2 消费点 `src/client/TerminalView.tsx`
+
+- 移除 effect 顶部的 `term.open(host); fit.fit()`（保留 `term.loadAddon(fit)`）。
+- 在 effect 尾部（`sendResize` / `connect` 定义之后、`connect()` 调用之前）注册：
+
+```ts
+const cancelOpen = openWhenSized(host, () => {
+  try {
+    term.open(host)
+    fit.fit()
+    sendResize()
+  } catch (error) {
+    console.error('[dsh-better-sidebar] xterm open failed:', error)
+  }
+})
+```
+
+- 回调里补 `sendResize()`：推迟路径下 socket 可能已先连上（`connect()` 在 effect 尾部同步调用），open+fit 后必须把真实 cols/rows 发出去，否则 pty 停留在默认 80x24 直到下次 resize；已尺寸快速路径下 socket 尚未 open，`sendResize` 内部守卫（`readyState === OPEN`）自然 no-op，无行为变化。
+- cleanup 里在 `term.dispose()` 前加 `cancelOpen()`。
+- 其余（connect / observer / fontSub / schemeSub / onData / 主题）不动。
+
+## 5. 测试
+
+`tests/open-when-sized.spec.ts`（jsdom + 注入手动步进的假 raf/caf；`Object.defineProperty` 桩 `clientWidth/clientHeight`；`appendChild/remove` 控制 `isConnected`）：
+
+1. 已尺寸 → tick 一次后 open 恰好一次，之后不再排帧；
+2. 零尺寸 → 多次 tick 不 open，设尺寸后下一次 tick open 一次，后续 tick 不重复；
+3. 只有一维缺失 → 补齐后 open；
+4. cancel 后永不 open、无残留帧、cancel 幂等；
+5. host 脱离文档 → 轮询停止、不 open；
+6. open 抛错 → 异常向调用方传播（调用方负责 try/catch），不重复调用。
+
+## 6. 限制与取舍
+
+- rAF 轮询在 host 长期隐藏（`display:none` 祖先）期间持续排帧，每帧只读两个属性，开销可忽略；open 后立即停止。用 ResizeObserver 触发也可行，但轮询是 issue 中建议的标准修法，且不依赖 observer 对 transition 中间态的回调时序。
+- 已尺寸快速路径比原行为晚一帧（rAF 回调时机），无感知差异。
+- 若容器永远零尺寸（异常布局），终端永不 open、不崩溃——对不可见内容是可接受的降级。
+
+## 7. 实施偏差记录
+
+无（按设计实施）。

docs/plans/2026-08-15-skin-compat-design.md

@@ -0,0 +1,67 @@
+# 皮肤兼容（令牌驱动）：面板表面、终端透明度回退与独立 CSS 修复
+
+**日期**：2026-08-15
+**状态**：已实施（本文档含实施偏差记录）
+**目标版本**：随发布 bump（本 PR 不改版本号、不更新 README——发布流程统一处理）
+
+## 1. 目标
+
+让 better-sidebar 与 **dsh-web-ui 的皮肤中心**兼容：用户切换皮肤时侧边栏自动跟随换肤，零每皮肤适配（KISS：不做 aionui 式"每款皮肤 remap 一套令牌"的重活）。附带修复同批 CSS 问题（[#52](https://github.com/omdsh-dev/DSH-better-sidebar/issues/52) 弹出框遮挡、[#57](https://github.com/omdsh-dev/DSH-better-sidebar/issues/57) 前半图标尺寸、[#92](https://github.com/omdsh-dev/DSH-better-sidebar/issues/92) 拖拽回归防护），并覆盖 [#60](https://github.com/omdsh-dev/DSH-better-sidebar/issues/60)/[#105](https://github.com/omdsh-dev/DSH-better-sidebar/issues/105)/[#90](https://github.com/omdsh-dev/DSH-better-sidebar/issues/90) 的相关诉求。
+
+## 2. 调研结论
+
+dsh-web-ui（`zhu1090093659/dsh-web-ui`）的皮肤机制：
+
+- 皮肤 = cordis 插件（`ui-skin-<id>`），皮肤中心通过 `cordis.patch.yml` 切换激活；皮肤插件 client half 在 `document.body` 上打 `data-dsh-<skin>` 属性并注入 CSS。
+- **10 款皮肤全部覆盖两层令牌**：`--dsw-static-*` 基础色板 + `--dsw-alias-*` 语义层（`--dsw-alias-bg-layer-1`、`--dsw-alias-bg-base` 等做成半透明玻璃 rgba 0.16–0.7，`--dsw-specific-sidebar-fill` 也全部覆盖）。
+- dsh-web-ui 自家右侧面板（aionui）用独立 `--aion-*` 令牌，每款皮肤单独 remap——**重**。
+
+结论：better-sidebar 只要**消费 DSH 标准令牌**（alias 层），换肤就自动跟随，不需要任何每皮肤适配。此前围绕第三方皮肤插件（Aqua/deep-whale）设计的类名改名与 `data-bs-*` 语义钩子按 KISS 原则**全部回退**（见 §6）。
+
+## 3. 设计
+
+### 3.1 面板表面（`sidebar.module.css`）
+
+```css
+.panel        { background: var(--dsw-alias-bg-layer-1); }
+.bottomPanel  { background: var(--dsw-alias-bg-layer-1); }
+```
+
+- 直接消费通用卡片表面令牌，**不新增自有令牌、不加属性钩子**。
+- **绝不消费 `--dsw-specific-sidebar-fill`**：那是宿主左侧导航列专属令牌，皮肤系统按左导航语义覆盖它（dsh-web-ui 半透明玻璃/主题色、Aqua `transparent`），面板消费它会失去填充或与标签令牌冲突。
+- stock 外观色阶变化仅 ±8 RGB（bluish-50→75 / 900→875），视觉无差；dsh-web-ui 换肤后面板获得与宿主一致的玻璃效果。
+
+### 3.2 终端/编辑器透明度回退（`theme.ts` / `TerminalView.tsx`）
+
+`effectiveTokenValue` 现在把以下值视为"未设置"（触发调用方 `||` 回退）：
+
+- 空串与 CSS 重置关键字（`transparent`/`initial`/`inherit`/`unset`）；
+- **alpha < 0.9 的半透明颜色**（dsh-web-ui 皮肤的 `--dsw-alias-bg-base` 是 rgba 0.16–0.7 玻璃）。
+
+新增 `colorAlpha()` 解析 computed 颜色（rgb()/rgba()/hsl()/hsla() 逗号与空格语法、`#rgb/#rgba/#rrggbb/#rrggbbaa`）；无法解析的格式（命名色、`color()`）视为不透明放行。阈值 0.9：≥ 0.9 的近不透明值（如皮肤作用域内 0.96 瓷器玻璃）放行，皮肤仍能控制终端表面。
+
+### 3.3 独立修复（与皮肤兼容无关，保留）
+
+- **z-index（#52）**：`.toggleCluster` 55→45、`.panel`/`.bottomPanel` 50→40；角手柄移入面板后为面板内局部 `z-index: 2`。依据：DSH 浮层栈为 100（Menu/HoverCard/Tooltip/PopupSelect/Modal=1000），30–99 无任何 DSH 元素。
+- **角手柄几何 CSS 化**：移入右面板 DOM，`position: absolute; left: -6px; bottom: calc(var(--dsh-sidebar-height, 0px) + 6px)`——复用拖拽逐帧写入的布局变量，删除 `cornerRef` JS 内联坐标。
+- **刷新图标统一 `size={14}`（#57 前半）**：Explorer/Git/Diff 的 `IconRefreshOutline16` 显式 14px，与 Subagent/Browser 一致。
+- **拖拽逐帧回归 e2e（#92）**：`tests/e2e/drag-layout.e2e.ts` rAF 采样，断言拖拽期间 `data-dsh-sidebar-dragging` 存在、`#root` transition 为 none、会话列与面板边单调 1:1 跟随（实测通过）。拖条以 `cursor: col-resize` 语义定位（无属性钩子可依赖）。
+
+## 4. 测试
+
+- `tests/theme.spec.ts`：`colorAlpha`（hex/rgb/hsl/不可解析）与 `effectiveTokenValue`（transparent/关键词/半透明回退/0.96 放行/缺失）。
+- `tests/e2e/mount.e2e.ts`：追加 `--dsh-sidebar-width` 布局变量随面板挂载生效的断言（令牌驱动契约的挂载级守护）。
+- `tests/e2e/drag-layout.e2e.ts`：拖拽逐帧回归。
+- 门禁：`pnpm typecheck && pnpm test && pnpm build && pnpm pack && pnpm test:mount`。
+
+## 5. 文档
+
+- AGENTS.md §8「皮肤兼容（令牌驱动）」：面板表面令牌、透明度阈值、z-index 层级、根锚点 `[data-dsh-better-sidebar]`、类名非契约。
+- README 不在本批更新（发布时随版本条目更新）。
+
+## 6. 实施偏差记录
+
+- **首版契约（已回退）**：初版围绕第三方皮肤插件设计了 `--dsh-sidebar-surface`/`--dsh-resize-strip-offset` 自有令牌（review 后已删）、panel 家族类名 kebab-case 改名（breaking）与 `data-bs-*` 语义钩子。确认主目标是 dsh-web-ui 皮肤中心后，按 KISS 全部回退：令牌驱动下这些都不需要，改名还引入无谓 breaking。最终契约 = 消费标准令牌 + 透明度阈值，无自有概念。
+- **角手柄 `z-index` 语义变化**：移入面板后 z-index 为面板内层叠（2，与拖条一致），对外绝对层级由面板（40）决定；两面板同开时手柄盒与底面板上沿无重叠（≥6px 间隙），行为不变。
+- **拖拽禁用断言修正**：`transition: none` 的 computed 值为 `transition-property: none`（非 `all`），已按实测修正。
+- **面板默认表面色阶微调**：±8 RGB，未做像素级补偿（e2e 不依赖具体颜色）。

docs/plans/2026-08-15-url-target-browser-settings-design.md

@@ -0,0 +1,89 @@
+# 外链点击路由到插件 tab（urlTarget）+ 浏览器 HTTP/HTTPS 二级设置
+
+**日期**：2026-08-15
+**状态**：已实施（本文档含实施偏差记录）
+**目标版本**：v0.13.0（API 兼容层，版本号未随本变更 bump，见 §7）
+
+## 1. 目标
+
+基于 [PR #74](https://github.com/omdsh-dev/DSH-better-sidebar/pull/74)（聊天区外链开关颗粒度讨论）向前兼容地拓展服务化 API：
+
+1. **插件声明「点击打开的类型」**：`TabDescriptor` 新增可选 `urlTarget?: (url: URL) => boolean`——聊天区外链被拦截时，路由到第一个声明的、命中的、未被设置禁用的插件 tab 类型（`openTab({ type, url, title: hostname })`，URL 即全部载荷），内置浏览器 tab 退居隐式兜底。
+2. **浏览器链接设置改为二级菜单**（浏览器卡片齿轮弹窗内）：
+   - 侧边打开 HTTP 网页（默认开）
+   - 侧边打开 HTTPS 网页（默认关）
+   - `browserInterceptLinks` 保留为**总闸**（默认开，零迁移：旧文档显式 false 语义完整保留）。
+
+## 2. 非目标
+
+- 不实施 PR #74 的「外链开关提升到常规区」（用户确认：二级设置留在浏览器卡片齿轮弹窗，常规区不加行）。
+- 不做 per-host / per-domain 路由规则（只有 per-protocol 开关 + 插件谓词）。
+- 不改 + 菜单、不改手动打开的浏览器 tab、不改同源/修饰键点击放行规则。
+- 不改 host 半逻辑（仅 PrefsSchema 加字段）；不修改 DSH 源码。
+- 不做版本号 bump（发布时决定；向前兼容机制 = `SIDEBAR_FEATURES` 追加 `'urlTarget'`）。
+
+## 3. 现状回顾
+
+- `link-intercept.ts` 的 `registerLinkInterception` 无参 `takeoverEnabled()` 只做布尔门；`index.tsx` 硬编码 `openTab({ type: 'browser', url, title: hostname })`。
+- `browserInterceptLinks`（默认 true）与 `browserNoSandbox` 并列于浏览器卡片的 `settings.toggles`；拦截 gating = 该 pref && `tabsEnabled['browser']`。
+- `openTab` seed 已有 `url` 字段（新建 tab 的 path 预填），插件 tab 无需新渲染管道。
+
+## 4. 设计
+
+### 4.1 Prefs（`prefs-shared.ts` / `config.ts` / `client/prefs.ts`）
+
+```ts
+interface SidebarPrefs {
+  // …
+  browserInterceptLinks: boolean   // 总闸，默认 true（保留，零迁移）
+  browserInterceptHttp: boolean    // HTTP 外链侧边栏接管，默认 true
+  browserInterceptHttps: boolean   // HTTPS 外链侧边栏接管，默认 false
+}
+```
+
+三处同步维护（类型 + schemastery 默认 + parsePrefs 校验），旧文档无需迁移：总闸保留使显式关闭过的用户升级后仍不拦截。
+
+### 4.2 服务 API（`service.ts`）
+
+```ts
+interface TabDescriptor {
+  // …
+  urlTarget?: (url: URL) => boolean
+}
+
+/** 注册顺序先到先得；谓词抛错吞掉（console.error）继续；返回 undefined 由调用方回退 browser。 */
+export function matchUrlTarget(tabs: readonly TabDescriptor[], url: URL): TabDescriptor | undefined
+```
+
+- 匹配函数为**模块级纯函数**（不进 `BetterSidebarService` 接口，KISS：不扩公开面）；启用态过滤由调用方（`index.tsx`）按 `tabsEnabled` 过滤后传入。
+- 内置 browser 不声明 `urlTarget`，永远不可能遮蔽插件声明；插件多 URL 并存需用 `createTab` 铸造 per-URL id（browser 同款模式），否则 id 安全网聚焦既有 tab 不覆写 path。
+- `SIDEBAR_FEATURES` 追加 `'urlTarget'`（消费者按能力 gate）。
+
+### 4.3 拦截管线（`link-intercept.ts` / `index.tsx`）
+
+- `shouldInterceptLink` 签名不变（协议/同源纯判定）；`takeoverEnabled` 改为 `(url: URL) => boolean`，onClick 顺序：纯判定 → gate（持 URL）→ preventDefault → open。
+- `index.tsx` gate：总闸 `browserInterceptLinks` → 协议开关（https 读 `browserInterceptHttps`，否则读 `browserInterceptHttp`）→ 目标可开（插件命中即目标，否则 browser 的 `tabsEnabled`）。open 时再次解析目标并 `openTab({ type, url, title: hostname })`。
+
+### 4.4 设置 UI（`builtins/tabs.tsx` / `locales.ts`）
+
+浏览器卡片 `settings.toggles` 收敛为四行：`browserNoSandbox` / `browserInterceptLinks`（总闸）/ `browserInterceptHttp` / `browserInterceptHttps`；新增 zh/en 文案（HTTP 默认开、HTTPS 默认关及理由）。
+
+## 5. 行为变化
+
+- 默认设置下：HTTP 外链 → 侧边栏（不变）；**HTTPS 外链 → 系统浏览器新窗口（变化，符合「默认关闭」）**。
+- 声明 `urlTarget` 的插件 tab 认领被拦截的链接（优先于浏览器兜底）；插件被禁用/谓词抛错时跳过。
+- 总闸关闭 → 一律不拦截（旧文档语义保留）。
+
+## 6. 测试
+
+- `tests/builtins.spec.ts`：浏览器 toggles 断言收敛为四行 + 各行 title/desc 存在。
+- `tests/service.spec.ts`：`matchUrlTarget`（无声明 → undefined / 注册顺序 / 抛错吞掉 / browser 永不命中）。
+- `tests/link-intercept.spec.ts`（新增 jsdom）：`takeoverEnabled(url)` 收到解析后的 URL、gate 决定是否接管、同源/非 http(s) 不 consult gate、修饰键绕过。
+- `tests/unit.spec.ts`：parsePrefs 新字段默认值（http true / https false / 非法回退）；总闸与协议开关相互独立。
+- `tests/plugin-shape.spec.ts` / `tests/smoke.spec.ts`：全默认字面量补两个字段。
+
+## 7. 实施偏差记录
+
+- 计划曾考虑把 `matchUrlTarget` 作为 `BetterSidebarService` 接口方法（镜像 `matchFileViewer`）；按 KISS 收敛为**模块级导出纯函数**，启用态过滤由调用方完成（匹配函数不感知 prefs），公开 API 面只剩 `urlTarget` 字段 + `'urlTarget'` feature 字符串。
+- 版本号未 bump（保持 0.12.1）：`SIDEBAR_SERVICE_VERSION` 与 `package.json` 的配对断言继续成立；`'urlTarget'` feature 已入 `SIDEBAR_FEATURES`，发布时再决定版本。
+- PR #74 的 diff（常规区移动 + 其测试改动）被本方案取代，未合入。

docs/plans/2026-08-17-mermaid-safe-render-design.md

@@ -0,0 +1,82 @@
+# Markdown 预览 Mermaid 安全渲染设计
+
+> 日期：2026-08-17
+> 状态：已实现
+> 范围：`dsh-better-sidebar` 插件，Markdown 预览 + 新 `mermaid` 懒加载 chunk
+> 基线：社区 PR #99（`feat/mermaid-md-preview`）的架构与安全姿势；借鉴 PR #75（`feat/mermaid-rendering`）的点击放大交互
+
+## 1. 背景与问题
+
+Markdown 预览（`TextEditor.tsx` 的 preview 模式）直接把全文交给 DSH 的 `MarkdownText`（`@deepseek-ai/dsh-client-ui-primitives`）渲染。该渲染器的 fenced code 一律走 `CodeBlock`（Shiki 高亮 + 复制按钮），且**不支持自定义 fence 渲染器**——```` ```mermaid ```` 块只会显示成一段无高亮的代码，不会渲染成图（DSH 宿主内 `mermaid` 字样出现 0 次，Shiki 别名表也无此语言）。
+
+社区出现过两个 mermaid PR，安全姿势差异极大：
+
+| | PR #75 | PR #99 |
+|---|---|---|
+| 加载 | 运行时 jsdelivr CDN（第三方供应链、离线不可用、无版本锁） | 自有懒加载 chunk（mermaid 11.16.1 本地打包，`/sidebar/bundle` 同源下发） |
+| 安全 | `securityLevel: 'loose'`（标签可注入原始 HTML）+ 无清洗 + `innerHTML` 直插 | `securityLevel: 'strict'` + `htmlLabels: false` + SVG 二次清洗 + 不应用 `bindFunctions` |
+| 测试/文档 | 无 | 单测 + e2e + 设计文档 |
+| 亮点 | 点击放大弹窗（滚轮缩放/拖拽/快捷键） | 主题跟随、错误回退、CodeBlock 同款 chrome |
+
+**结论：以 #99 为基线**。md 文件来自工作区（可能来自克隆仓库/下载），不可信；`loose` + 无清洗在 DSH GUI origin 下就是 XSS（可读会话数据）。**仅借鉴 #75 的点击放大交互**，在 #99 的已清洗 SVG 之上用 React 重写（克隆节点无事件面，弹窗不新增攻击面）。本地图片引用重写（#99 顺带功能）不在本 PR 范围，另行独立 PR。
+
+## 2. 方案
+
+### 2.1 检测：纯函数按 fence 切块
+
+新增 `src/client/mermaid-blocks.ts`（`splitMermaidBlocks`，纯函数、无依赖），职责是**检测**预览是否需要 mermaid chunk：
+
+- 逐行扫描，命中 info string 为 `mermaid` 的围栏（大小写不敏感，支持 `mermaid{...}` 属性后缀，缩进 ≤3 空格，CommonMark 语义）即"提出"为 `{ kind: 'mermaid', code }` 块；
+- 其余行原样保留在 `{ kind: 'markdown', text }` 块中（含非 mermaid 围栏）；
+- 未闭合的 mermaid fence 吞掉文件剩余部分（与 CommonMark 对开 fence 的恢复一致）；
+- **CommonMark fence 规则完整**：开 fence 为 3+ 反引号**或波浪号**；闭 fence 必须同字符且长度 ≥ 开 fence；反引号 fence 的 info string 含反引号时该行不是开 fence。
+
+`TextEditor` 预览时先 `splitMermaidBlocks`，**无 mermaid 块则走原 `MarkdownText` 直渲路径（零行为变化）**；有则渲染 `MermaidMarkdown`（mermaid chunk 内）。
+
+### 2.2 渲染架构：单次解析 + 占位替换（CR 第 3 轮 P1 修正）
+
+早期方案把文档切成多个独立 `MarkdownText` 片段，会破坏跨 fence 的 Markdown 语义（引用式链接定义在 fence 之后、脚注、有序列表连续性）。当前实现：
+
+- **整篇文档只走一次 `MarkdownText`**（`MermaidMarkdown`），跨 fence 语义完整；
+- 布局阶段（`useLayoutEffect`）扫描容器内 `.md-code-block`，识别 mermaid 块（双通道：shiki 路径的 `code.language-mermaid` 类，或 plain 路径的 banner infostring 文本 === `mermaid`——mermaid 无 shiki 语法必走 plain，语言只显示在 infostring 里），用 `createRoot` 把 `MermaidDiagram` 挂进替换后的子节点；**React 管理的 `.md-code-block` 宿主节点保留在树中**（仅替换其 children，CSS `display: contents` 抑制代码块自身盒子），React 协调不会丢失宿主；
+- 块内容变化（编辑后重新预览）按源码 diff 重渲；块不再是 mermaid fence 时还原原 children（普通代码块恢复显示）；fence 消失时卸载对应 root；
+- DSH `MarkdownText` 无代码块渲染扩展入口（且仓库硬约束禁止改 DSH），这是约束内的最小侵入方案。
+
+### 2.2 懒加载 chunk：`mermaid`
+
+mermaid 及其图依赖（d3 / dagre-d3-es / cytoscape 等）打包进新的 `lib/client-mermaid.js`（~7MB），复用既有 chunk 机制（tsdown `CHUNKS` + `/sidebar/bundle` 路由 + `globalThis.__dshChunks__` 注册表 + `lazyChunkComponent` 懒包装），仅当预览的 md 文件实际含 mermaid fence 时才下载/执行。chunk 名在 4 处同步：`tsdown.config.ts` `CHUNKS`、`src/bundle-route.ts` `CHUNK_NAMES`、`src/client/chunk-loader.ts` `ChunkName`、`package.json` `files`（及各 spec 的硬编码清单）。构建侧对 mermaid chunk 注入 `mermaidChunkAliases`：把裸 `uuid` 说明符解析到浏览器入口（`uuid/dist/index.js`，Web Crypto 实现），绕过其 node 入口的 `node:crypto` 触发客户端纯度门。
+
+### 2.3 渲染与安全（纵深防御）
+
+- `mermaid.render(id, code)` 客户端渲染 → SVG 字符串注入；每个渲染调用用单调递增 id（文档内唯一）；
+- `mermaid.initialize({ startOnLoad: false, securityLevel: 'strict', htmlLabels: false, theme })`——strict 下标签被转义、`click` 指令失效；`htmlLabels: false` 强制节点文字走真实 SVG `<text>`（默认的 `foreignObject` HTML 标签通道会被清洗器整体删除，导致文字丢失），同时把 HTML 标签注入面关死；`bindFunctions` **不**应用（静态图，无点击交互）；订阅 `subscribeColorScheme`，深浅色切换自动按新主题重渲；
+- **SVG 注入前二次清洗**（`src/client/mermaid-sanitize.ts`，独立纯函数、可单测）：`DOMParser`（`image/svg+xml`）解析，删除 `foreignObject` 与 `script`/外来 HTML 元素（`img`/`iframe`/`object`/`embed`/`video`/`audio`/`input`/`button`/`form`/`link`/`meta`/`base`），剥离 `@*`/`on*` 属性，**移除全部 `href`/`xlink:href`**（静态图不需要链接，杜绝 javascript:/data: 乃至普通外链把整个 GUI 导航走）；仅接受根元素为 `<svg>` 的文档；解析失败（parsererror/非 SVG 根）返回空串，调用方显示错误回退，**原始字符串永不过清洗器**；
+- 渲染失败（语法错误/清洗拒绝）展示错误条 + 原始代码块（便于对照修改），错误全文挂 tooltip；空 fence 不渲染；
+- 块头保留与 `CodeBlock` 一致的 chrome：info string「mermaid」+ 复制按钮（`writeClipboard`，沿用 `copy`/`copied` 字典）。块体带稳定锚点 `data-mermaid-diagram`（e2e 断言用）。
+
+### 2.4 点击放大弹窗（借鉴 PR #75，React 重写）
+
+点击 `[data-mermaid-diagram]` 内 SVG → 克隆节点（**已清洗**，无事件属性）→ portalled fixed overlay（`data-mermaid-modal`）：
+
+- 滚轮缩放（以鼠标位置为不动点，被动标志关闭防止页面滚动）；
+- 拖拽平移（mousedown/mousemove/mouseup on window）；
+- 工具栏按钮：− / + / ⟳ / ✕（i18n title）；
+- 键盘：`+`/`=` 放大、`-` 缩小、`0` 重置、`Esc` 关闭；
+- 背景点击关闭；卸载时移除全部监听；
+- 样式全部走 CSS Module + DSH 令牌（遮罩 `--dsw-alias-bg-mask-1` + `blur(2px)`，与 DSH `Modal` 一致；z-index 1000 落在 DSH 浮层栈）。
+
+## 3. 验证
+
+- 单测：`tests/mermaid-blocks.spec.ts`（14 例：fence 识别大小写/属性/缩进、4 反引号/波浪号、同字符且不短于开 fence 的闭 fence、非 mermaid 围栏不动、交错顺序、开 fence 恢复、空文件）；`tests/mermaid-sanitize.spec.ts`（10 例 XSS：foreignObject/script/外来元素整节点剥离（含混合大小写元素名与属性名）、`on*`/`@*` 剥离、href/xlink:href 全删、畸形 XML → 空串、非 SVG 根 → 空串、良性图保真）；`tests/mermaid-markdown.spec.tsx`（3 例架构回归：mermaid 块被交换为图、**跨 fence 引用式链接在单次解析下解析**、非 mermaid 围栏不动）；
+- 产物契约：`chunk-artifact.spec.ts`（mermaid chunk 执行 + registry 槽位 + 平台 externals require，`addEventListener` stub）/ `manifest-consistency.spec.ts` / `bundle-route.spec.ts` 的 chunk 清单同步加入 `mermaid`；
+- 挂载冒烟：`tests/e2e/mount.e2e.ts` 新增 seed `diagram.md`，打开后强制 `client-mermaid.js` 往返、断言 `[data-mermaid-diagram] svg` 含节点文字（真实 `<text>`）、**跨 fence 引用式链接解析为真实锚点（单次解析证明）**、点击弹窗出现且 Esc 关闭、预览模式编辑器隐藏；缺 chunk、文字丢失、语义破坏、弹窗失效任一即红；
+- 现有 `markdown-copy-labels.spec.tsx` 不回归（无 mermaid 文件走原路径）。
+
+## 4. 风险与取舍
+
+- 编辑器 chunk 之外新增 ~7MB 懒 chunk（mermaid + d3/dagre/cytoscape/katex 图依赖）；仅预览含 mermaid fence 的 md 时下载，启动与普通文本打开路径零成本；
+- `splitMermaidBlocks` 对"mermaid 围栏嵌在其他代码块内"的极边缘情况会误提（只影响是否走 mermaid 路径，不影响渲染正确性）——预览级工具接受该取舍（与常见 md 渲染器行为一致）；
+- 占位替换依赖 DSH `MarkdownText` 的 DOM 输出结构（`.md-code-block` + `language-mermaid`）：宿主节点保留在 React 树中、仅换 children，协调安全；若未来 DSH 渲染器结构变化，`data-mermaid-processed` 扫描点需要同步（有 e2e 兜底）；
+- 清洗器删除全部 `href`/`xlink:href`：`<use href>` 类图标引用可能不显示（纯装饰性损失），换取确定性的无导航/无脚本面；
+- mermaid 官方核心包持续演化，锁 `^11.16.1`，升级靠 Renovate 常规流程；
+- 回滚：删除 chunk 三处声明 + `files` 条目 + `TextEditor` 分支即可回到纯代码块展示。

docs/plans/2026-08-19-sidebar-injection-unified-host-design.md

@@ -0,0 +1,260 @@
+# 侧边栏面板注入方案设计：统一面板宿主（插件侧） + 官方槽位路线（上游侧）
+
+**日期**：2026-08-19
+**状态**：评审中（设计文档先行，实现待批准）
+**作者**：DSH 工程模式会话
+**当前版本**：v0.13.0（main）
+**目标版本**：v0.13.x（不 bump 大版本）
+
+## 1. 目标
+
+1. 解决侧边栏面板的**注入方法**问题：找到一个同时兼容「纯浏览器 / Electron 套壳（DSH Desktop）/ 各类 Tauri/WebView 套壳 / 移动 webview」且**性能良好**的统一注入方案。
+2. 消灭现有症状级补丁 PR 簇（#226 desktop 布局推挤、#135 dsh-web-mobile、#82/#108/#111/#138/#153 桌面标题栏）背后的结构性根因：**插件选择器深入宿主 DOM 形状（nth-child 锚点）+ 桌面壳依赖手动设置（titleBarCompat）+ 几何写路径分散（拖拽/状态两条）+ 懒加载缓存每次激活清空（重注入重执行）**。
+3. 探索并文档化「官方槽位路线」：参考 DSH 内置插件 `ui-sidebar`（官方左侧边栏本身就是以插件方式占用 `sidebar` 槽），评估外部插件接管官方面板槽的可行性与代价，作为中期北极星；上游未落地前以插件侧方案为主线。
+
+## 2. 非目标（Out of Scope）
+
+- **不修改 DSH 官方源码**（仓库硬约束，`~/.dsh/source/current` 零写入）；官方槽位路线只产出 issue/设计建议给上游。
+- 不做 shadow DOM / iframe 全隔离注入（令牌穿透、事件与 portal 代价高，仅在宿主样式污染实测出现时作为兜底启用）。
+- 不重构 tab/viewer 扩展点本身（`ctx.betterSidebar` 服务契约不变）。
+- 不承诺禁用官方 `ui-sidebar` 的行为由插件自动完成——那是 **profile 层用户决策**，插件只文档化。
+- 不处理 #69（browser 探测，独立域）。
+
+## 3. 已验证事实（证据先行，2026-08-19 核对）
+
+### 3.1 当前注入实现（本仓库）
+
+| 事实 | 证据 |
+|---|---|
+| 注入 = body 直下 `div[data-dsh-better-sidebar]` + **第二个 React root**（非 portal） | `src/client/index.tsx:120-141` |
+| 宿主推挤 = html 上 `--dsh-sidebar-width/height` + `#root{margin-right}` + **`#root > [data-slot=root] > div > div:nth-child(2)` 锚点** | `src/client/layout.css:22-32` |
+| 拖拽：pointer 事件 + rAF 单帧写面板尺寸与 html 变量（无强制 reflow 读） | `src/client/Sidebar.tsx:494-518` |
+| 懒加载 chunk：每次激活 `resetChunks()` 清内存缓存 → 下次懒打开**重注入+重执行**脚本；HTTP 层已有 ETag 304（**不重下载**） | `src/client/index.tsx:120` 注释、`chunk-loader.ts` |
+| 会话切换：只换 snapshot，面板 DOM 不重建（保持） | `Sidebar.tsx` store 驱动 |
+| **已具备（实施勿重做）**：拖拽 rAF 批处理（`scheduleDrag` 单帧一次 `applyDrag`，无强制 reflow 读）；窄屏不推挤宿主（narrow 时宽/高变量写 0）；`measureCenter` ResizeObserver 已 rAF 节流；header 推挤已用弱锚点 `[data-slot="conversation.session.header"]` | `Sidebar.tsx:368-424,487-533,563-585`、`layout.css:45` |
+
+### 3.2 DSH 官方架构（`~/.dsh/source/current`，只读）
+
+| 事实 | 证据 |
+|---|---|
+| 外壳 = `#root` 单挂载点 + `__DSH_BOOT__` 引导；真实 UI 树全挂在 `root` 槽 | `apps/web/index.html:10-12`、`packages/client/web/src/app.tsx:38-43` |
+| `ui-layout` 声明 `root` 槽的 children：`sidebar`/`conversation`/`details` 三个 **single 独占槽**；single 槽重复声明**抛错** | `ui-layout/src/client/index.ts:80-96`、`ui-slots/src/index.ts:747` |
+| **官方左侧边栏 = 内置插件 `ui-sidebar`**：注册 `name:'sidebar'`，渲染在 AppFrame 的 grid 列内；几何经 layout store → `gridTemplateColumns` 内联传导（非 CSS 变量）；**官方不持久化宽度/折叠**；折叠按钮在 SidebarRoot 内自渲染并调 `ctx.layout.toggleSidebar()`；拖拽把手由 AppFrame 免费提供 | `ui-sidebar/src/client/index.ts:39`、`ui-layout/src/client/AppFrame.tsx:164-196` |
+| `details` 槽（右侧面板）被 `ui-conversation` 的 DetailsPanel 占用；禁 ui-conversation = 会话列整体空置，代价极高 | `ui-conversation/src/client/apply.ts:445-458` |
+| 官方浮层（Menu/Modal/Toast/HoverCard）全部 `createPortal(document.body)`——**body 级 portal 是官方姿势** | `ui-primitives/Menu.tsx:299`、`Modal.tsx:55-85` |
+| 槽位注入消费者经 `slots.inject` 注入；槽未声明时**静默跳过**（禁用 ui-sidebar 不会炸树，但接管者需自实现会话/设置入口） | `runtime/src/client/slots.ts:130-192` |
+| profile 可禁用内置插件行：`cordis.patch.yml` `- id: <plugin-id>` + `disabled: true`（皮肤 10 款禁用先例） | `~/.dsh/profiles/web/cordis.patch.yml` |
+| 性能参考：拖拽 rAF 合并最新 delta 单帧应用 + `[data-dragging]` 禁过渡 + 纯函数让步结算 + 「关闭=宽 0 保活不卸载」 | `AppFrame.tsx:59-62`、`AppFrame.module.css:8-17`、`columns.ts:62-77` |
+
+### 3.4 实证核对（真实 dsh web 页面，Playwright 探针，2026-08-19）
+
+对 http://127.0.0.1:3080/（本机 profile，better-sidebar 已挂载）实测 DOM 与推挤行为：
+
+| 事实 | 实测结果 |
+|---|---|
+| 外壳 DOM 链 | `#root > div[data-slot="root"]`（**display:contents**）`> div[data-dsh-frame]`（grid，CSS module 哈希类名） |
+| frame 子项 | **5 个**：`[data-pane=sidebar]` / `[data-pane=conversation]` / `[data-pane=details]` / `[data-shell-overlay]`（浮层）/ 拖拽 handle——`nth-child(2)` 当前仍命中 centerCol，但**位置脆弱性实锤**（浮层/handle 已混入子项序列） |
+| 稳定锚点 | centerCol 带 `data-pane="conversation"`；frame 带 `data-dsh-frame` → 弱锚点 = `#root [data-dsh-frame] > [data-pane="conversation"]` |
+| ~~`[data-slot="conversation"]` 锚点候选~~ | **作废**：该元素 `display: contents`（无盒，margin 无效，rect 0×0） |
+| 推挤无溢出（web） | 设 `--dsh-sidebar-width:300px` 后：`#root` margin-right 生效（过渡中 92px），`scrollWidth == clientWidth == 1440`，**无水平溢出** → `width: calc(100% - var)` 改动在 web 无副作用；桌面壳溢出修复（#226 目标）保留并标注「web 已验证无害、Desktop 待实测」 |
+| 当前 host 本体 | `[data-dsh-better-sidebar]` 为 `position: static` 的普通块（fixed 在**内层面板**上）→ 新增 `data-dsh-panel-host` 固定含块层是宿主内新元素，外部契约不变 |
+| 页面错误 | 0 个 pageerror（探针期间） |
+
+### 3.3 桌面套壳（本机 DSH Desktop.app，Electron）
+
+| 事实 | 证据 |
+|---|---|
+| 渲染 URL 注入信号：`?dsh-desktop-mode=<compatibility\|advanced>&dsh-desktop-platform=<…>` | `app.asar.unpacked/lib/src-B5373ech.js` |
+| win32：`titleBarStyle:"hidden"` + `titleBarOverlay({height:32})`（右上角 32px 为窗口控制钮） | `electron-runtime-C_i38SKA.js:338-348` |
+| darwin：`titleBarStyle:"hiddenInset"` + `trafficLightPosition(16,16)`（左上红绿灯区 ~78px） | 同文件 `:325-333` |
+| 安全基线：`contextIsolation/sandbox:true`、`nodeIntegration:false`；preload 仅暴露 `__DSH_DESKTOP_FILE_PATH__` | `preload.cjs:5-9` |
+| 社区 Tauri 套壳（kyorakuyk/dsh-desktop、Lotus-c/DSH-Desktop）用**原生系统标题栏**，fixed 语义与纯浏览器一致 | 子代理调研（来源 URL 见 §10） |
+| 套壳最大注入风险：祖先 `transform/will-change` 劫持 fixed 包含块、标题栏 overlay 遮顶、drag 区吞事件、移动键盘盖 `bottom:0` | 子代理调研 |
+
+## 4. 方案总览：双路线
+
+```
+路线 A（主线，本仓库可控）┐
+  统一面板宿主：body 固定含块包裹层            ├─ 现在 → v0.13.x（已实施，分支 feat/injection-unified-host）
+  + 桌面信号自动适配 + 几何写路径统一          │
+路线 B（已关闭）┘
+  ui-sidebar 模式：占用官方槽位（grid 内渲染） ─ 2026-08-19 用户决策关闭：无法向官方提 issue，
+                                                纯插件侧自己优化注入方式（调研结论保留于 §6）
+```
+
+- **路线 A 已实施**：不依赖 DSH 新能力，纯插件侧，直接吸收桌面/移动/性能问题。
+- **路线 B 已关闭**（2026-08-19 用户决策）：不提交上游 issue；§6 的槽位可行性调研保留为后续参考，但不再推进。
+
+## 5. 路线 A 详细设计：统一面板宿主
+
+### 5.1 挂载层（兼容性根因修复）
+
+**A1.1 固定含块包裹层**：保留 body 级锚点（官方 portal 姿势），但结构升级为：
+
+```
+document.body
+└─ div[data-dsh-better-sidebar]           ← 唯一锚点（属性不变，兼容既有契约/皮肤）
+   └─ div[data-dsh-panel-host]            ← 新增：position:fixed; inset:0; pointer-events:none; z-index:40
+      ├─ 右侧面板（absolute; right:0; pointer-events:auto）
+      └─ 底部面板（absolute; bottom:0; pointer-events:auto）
+```
+
+- 面板在**自己的固定含块**内 absolute 定位 → 宿主中间层（套壳注入的 wrapper）transform 不再劫持面板 fixed 语义。
+- 折叠按钮簇 z-index 45 不变（skin 契约 §8 同步）。
+- **挂载自检（一次）**：挂载后对比 `getBoundingClientRect()` 与 `window.innerWidth/Height`；若 html/body 本身被套壳 transform/偏移（罕见），自动降级为「absolute + 每帧 rAF 同步宿主 rect」模式并 console.warn 一次。
+- **MutationObserver 守卫（默认开，可关）**：body childList 变化检测锚点被宿主清空/挪位时自动重挂（SPA 导航/套壳重排兜底）；观察器廉价（仅 childList、无 subtree）。
+
+**A1.2 桌面信号自动探测**（替代手动 titleBarCompat）：
+
+- 信号源：URL `dsh-desktop-mode` / `dsh-desktop-platform`（Electron 官方注入）+ `window.__DSH_DESKTOP_FILE_PATH__` 存在性（preload 标记）+ UA 兜底。
+- 适配表：
+
+| 探测结果 | 自动适配 |
+|---|---|
+| win32 + advanced | 右上角保留 32px 标题栏 overlay 区：折叠按钮簇/设置按钮下移，面板顶部内边距 +32px |
+| darwin | 左上角保留 ~78px 红绿灯区：左侧贴边控件（若存在）避让 |
+| compatibility / 无信号 | 原生 frame，不避让（现状行为） |
+| 移动 webview | 窄屏 overlay 抽屉 + `visualViewport` 键盘监听 + `env(safe-area-inset-*)` 内边距 |
+
+- 保留现有手动开关（titleBarCompat）作为覆盖位，但默认值改为「自动」。
+
+**A1.3 移动端**：窄屏（断点沿用 `breakpoints.ts`）面板从「推挤宿主」切「overlay 抽屉」：不写 `#root` margin、面板 transform 滑入滑出；`visualViewport` 变化（键盘弹起）时底部面板上移。
+
+### 5.2 几何层（性能）
+
+**A2.1 单一几何写入器**：现状有两条写路径——拖拽的 `applyDrag`（Sidebar.tsx:487-505）与打开态 effect（:563-585），都写同一组变量但互不感知。统一为 `writeGeometry({width,height})` 单函数，两条路径共用（拖拽仍走 `scheduleDrag` 的 rAF 单帧批写）；折叠/会话恢复等非拖拽变更也收敛到它。**不改变对外契约**：`--dsh-sidebar-width/height` 变量与 `#root` margin 推挤机制不变。
+
+**A2.2 拖拽**（现状已达标，微调即可）：
+
+- pointer capture + 最新 delta + 单帧 rAF 应用（**已具备**，保留）；
+- 拖拽期 `body[data-dsh-sidebar-dragging]` 禁过渡（**已具备**，`layout.css:49`）；
+- 新增：拖拽期面板根挂 `will-change: transform`；面板根常驻 `contain: layout style`（CSS 一处，隔离内部布局回流）。
+
+**A2.3 chunk 缓存精确化**：HTTP 层已 304 不重下载；缺口只在「激活后内存缓存清空 → 重注入+重执行」。改为：缓存键 = chunk 名 + 脚本内容哈希；激活时若哈希未变则保留内存缓存（跳过重注入），仅 HMR 核心 bundle 变化（版本变化）才清。保留失败路径（失败清缓存重试）。
+
+**A2.4 保活策略（保持现状并文档化）**：面板 DOM 跨会话不重建；tab 内容按 `visible` prop 懒挂载/卸载；树/终端等重组件不随会话切换重挂。
+
+### 5.3 契约层（可维护性）
+
+- **锚点弱化**：`layout.css:31` 的 `#root > [data-slot=root] > div > div:nth-child(2)` 替换为 `#root [data-dsh-frame] > [data-pane="conversation"]`（稳定 data 属性锚定，实证见 §3.4；`[data-slot="conversation"]` 为 display:contents 不可用）；推挤逻辑收敛进几何写入器（一处实现）。
+- **推挤可关闭**：`SidebarPrefs` 新增（或复用既有）「宿主推挤」开关，默认开；桌面套壳/移动端自动切 overlay 时关闭推挤（修 #226 根因：不再依赖 `#root{width:100%}` 之外的宿主形状）。
+- **契约文档化**：挂载点（`data-dsh-better-sidebar` / `data-dsh-panel-host`）、z-index 栈、CSS 变量（`--dsh-sidebar-width/height` 保持对外）、桌面信号（URL/全局标记）、推挤锚点策略 —— 同步 AGENTS.md §8 与本文档。
+- **服务契约不变**：`ctx.betterSidebar` API 零变化；#135 的 service 读取问题（dsh-web-mobile 下 `ctx.betterSidebar` 直接读抛错）由「注入层与服务的解耦」顺带收敛（面板渲染不再假设服务存在即可读）。
+
+### 5.4 性能清单（验收口径 + 实测基线）
+
+基线（2026-08-19 真实页面探针，本机 3080，拖拽 12 步 ≈192ms）：**40 帧、帧均 8.36ms / p95 10.2ms、1 帧超 16ms；62 次 `setProperty`（5 种几何属性：panel width / bottom height / bottom right / 两个 html 变量）**——即每帧 5 次写同一组元素，浏览器合并为单次样式重算。
+
+| 指标 | 现状 | 目标（v0.13.1 实施后） |
+|---|---|---|
+| 拖拽期宿主 layout 次数 | 每帧 1 次批写（`applyDrag` rAF），帧均 8.36ms | 保持帧率 ≥ 基线；面板 `contain: layout style` 隔离内部重排；拖拽期 `will-change` 提升合成层 |
+| 几何写路径 | 拖拽（`applyDrag`）与打开态（effect）两条路径写同一组变量 | 统一 `writeGeometry` 单写入器（已实施） |
+| 懒加载 chunk 二次打开 | 不重下载（304）但重注入+重执行 | ETag 未变 → 内存缓存命中，0 脚本执行（已实施） |
+| 会话切换 | 面板 DOM 不重建（已满足） | 保持 + 重组件懒挂载 |
+| 面板显隐动画 | transform+width/margin 过渡 | transform 优先（overlay 模式），推挤模式过渡保留（`#root` width/margin 锁步过渡） |
+| 观察器 | ResizeObserver 已 rAF 节流 | 保持；挂载自检/MutationObserver 守卫均为一次性廉价检查 |
+
+## 6. 路线 B 详细设计：官方槽位迁移（ui-sidebar 模式）
+
+### 6.1 可行性结论（已验证）
+
+- **`sidebar` 槽：可接管**。条件：profile 层 `cordis.patch.yml` 禁用 `ui-sidebar`（`disabled: true`），`ui-layout` 必须保留；接管者需自实现 `sidebar.workspaces`/`sidebar.settings` 子槽内容或留空（`slots.inject` 静默跳过，不炸树）；折叠按钮自渲染 + `ctx.layout.toggleSidebar()`；宽度/折叠持久化**自做**（官方不持久化）。
+- **`details` 槽：不可行（当前）**。唯一占用者 ui-conversation 的 DetailsPanel 与其会话 UI 同包，禁用即空置会话列；需上游把 DetailsPanel 拆为可替换槽位或提供优先级机制。
+- **几何传导**：槽位渲染在 AppFrame grid 列内，官方拖拽把手/折叠/让步结算免费生效；session scope 槽的 sessionId 由框架注入为标准 prop。
+
+### 6.2 上游 issue 建议（本仓库只出建议，不改源码）
+
+1. 将 `details` 槽的占用者改为**可替换**（如 single 槽支持「替换注册」或 DetailsPanel 拆独立包），使外部插件能接管右侧面板。
+2. 新增（或声明）`bottom-panel` 槽，供底部面板类插件使用。
+3. ui-sidebar 宽度/折叠持久化下沉到 layout store（官方侧目前不持久化）。
+
+**issue 草案（PR3 提交时使用，已备好）**：
+
+> **Title**: External plugins cannot take over the `details` panel slot
+> **Repo**: deepseek-ai/dsh（或官方插件仓库）
+> **Body**:
+> - Context: `ui-layout` declares `root` → `{sidebar, conversation, details}` as single-exclusive child slots. `ui-conversation`'s DetailsPanel is the sole occupant of `details`; an external panel plugin (e.g. dsh-better-sidebar) cannot register into it without disabling `ui-conversation` (which empties the conversation column). Meanwhile `ui-sidebar` (the official left sidebar) is itself a plugin and CAN be replaced from the profile layer (`cordis.patch.yml` `disabled: true`), which proves the pattern.
+> - Ask: make the `details` occupant replaceable — either (a) allow single-slot "replacement registration" with explicit opt-out by the default occupant, (b) extract DetailsPanel into a standalone optional plugin so profiles can disable it without losing the conversation column, or (c) declare a new `bottom-panel` slot for bottom panel plugins.
+> - Reference implementation to mirror: `ui-sidebar/src/client/index.ts:39` (register `name:'sidebar'`), `ui-layout/src/client/AppFrame.tsx:164-196` (grid geometry + drag handles come free), `runtime/src/client/slots.ts:130-192` (`slots.inject` consumers skip silently when a slot is undeclared).
+
+### 6.3 迁移路径（上游落地后）
+
+1. better-sidebar 增加「槽位渲染后端」：注册 `details`/`bottom-panel` 槽，`Sidebar` 树渲染进 grid（同一套 store/组件，仅挂载点不同）。
+2. body 浮层收敛为纯浮层：菜单、弹窗、右键、拖出浮窗（与官方 ui-primitives portal 同姿势）。
+3. 保留路线 A 的固定含块层作为浮层宿主；推挤/几何写入器退役（grid 接管）。
+
+### 6.4 收益与代价
+
+| 收益 | 代价 |
+|---|---|
+| 零 body 注入、零宿主 DOM 依赖 | 契约绑定上游 SlotMap，DSH 升级需跟随 |
+| 官方几何/拖拽/折叠/让步结算免费 | 官方不持久化宽度，需自做持久化 |
+| 任何套壳天然一致（grid 与套壳无关） | 上游排期不可控（issue 周期） |
+| 拖拽性能与官方同源 | 迁移期间双后端并存（维护成本） |
+
+## 7. 兼容矩阵（注入策略 × 场景）
+
+| 场景 | body 固定含块（路线 A） | 官方槽位（路线 B） | shadow DOM | iframe |
+|---|---|---|---|---|
+| 纯浏览器 | ✅ 推荐 | ✅ | ✅（令牌穿透） | ⚠️ 令牌/交互断裂 |
+| Electron 套壳（DSH Desktop） | ✅ + 信号自动避让 | ✅ | ✅ | ⚠️ |
+| Tauri 套壳（原生标题栏） | ✅ | ✅ | ✅ | ⚠️ |
+| 移动 webview | ✅ + overlay 抽屉/visualViewport | 需上游槽位 | ✅ | ⚠️ |
+| 页面内嵌 iframe | ⚠️ 需宿主放行 | ❌ | ✅ | ✅（天然隔离） |
+| 祖先 transform 劫持 | ✅ 自检降级 | ✅ 天然免疫 | ✅ | ✅ |
+| 性能（拖拽/显隐） | rAF 批写 + contain | 官方 grid | 中 | 低 |
+
+## 8. 实施拆分与验证
+
+### 8.1 拆分（文件级改动清单）
+
+**实施方式（2026-08-19 定稿）**：单分支 `feat/injection-unified-host`、按步骤顺序提交（每步 CI 绿）；原 PR1/PR2 拆分为内部步骤，合并为**一个 PR** 交付（改动彼此耦合，且路线 B 关闭后无外部依赖）。各步骤：
+
+1. **挂载层**（`src/client/index.tsx`、`src/client/Sidebar.tsx`、`src/client/sidebar.module.css`）：`Sidebar` 渲染根包 `data-dsh-panel-host`（`position:fixed; inset:0; pointer-events:none; z-index:40`）；`.panel/.toggleCluster/.bottomPanel` 由 fixed 改 absolute（层 inset:0 即视口坐标）+ `pointer-events:auto`；挂载后一次性几何自检（偏差 >8px → `data-dsh-panel-host-degraded` + rAF 视口同步 + warn 一次）；`MutationObserver`（body childList）守卫锚点被清空时重挂。✅ 已实施（commit 9a4c160）
+2. **几何层**（`Sidebar.tsx`、`sidebar.module.css`）：`writeGeometry` 统一拖拽/打开态两条推挤写路径；面板 `contain: layout style`；拖拽期（`body[data-dsh-sidebar-dragging]`）`will-change: transform`。✅ 已实施（commit 553e650）
+3. **chunk 缓存**（`chunk-loader.ts`、`index.tsx`）：`revalidateChunksOnReactivate()`——激活时 HEAD 每个已加载 chunk 对比 ETag，未变保留已解析 exports（跳过重注入/重执行），变更/不可达 fail-open 重取；测试夹具与孤儿缓存不跨激活存活。✅ 已实施（commit 0264625）
+4. **锚点与防溢出**（`layout.css`）：底部推挤锚点 `nth-child(2)` → `#root [data-dsh-frame] > [data-pane="conversation"]`（§3.4 实证）；`#root` 加 `width: calc(100% - var(...))` 与 margin 锁步过渡（实测 1140+300=1440 无溢出；#226 桌面溢出根因吸收）。✅ 已实施（commit 9c9515d）
+5. **桌面/移动适配**（新增 `desktop-env.ts`、`Sidebar.tsx`、CSS）：解析 `dsh-desktop-mode/platform` + `__DSH_DESKTOP_FILE_PATH__`；win32 advanced 自动 `titleBarCompat`（32px overlay，手动 pref 覆盖）；`visualViewport` 键盘 inset（底部面板/窄屏抽屉上移）；`env(safe-area-inset-*)`。✅ 已实施（commit a1906c5，单测 7 例）
+6. **测试与文档**：`tests/desktop-env.spec.ts`（7 例）、chunk-loader 重验证 4 例、`mount.e2e.ts` 增 `data-dsh-panel-host` 断言 + 桌面参数场景、AGENTS.md §8 契约同步、本文档更新。🔄 进行中
+7. **交付**：CI 全绿（含 plugin-mount）→ `gh pr create`。⏳ 待执行
+
+### 8.2 验证
+
+- **单元**：几何写入器 rAF 批处理（fake timers 断言单帧单写）；桌面信号解析（URL param × platform × 全局标记）；挂载自检降级路径；chunk 缓存命中/失效。
+- **e2e**：`tests/e2e/mount.e2e.ts` 深扫保持不变并新增断言：`data-dsh-panel-host` 存在、锚点属性不变；新增 desktop-mode URL 参数场景（模拟 win32 advanced → 顶栏避让类生效）。
+- **skin 契约**：`tests/theme.spec.ts` 令牌读取不变（§8 契约同步守护）。
+- **CI**：全绿门禁（build/typecheck/test/consumer-types/plugin-mount）；#180 的 plugin-mount flake 与本次改动无关，重跑确认。
+- **度量**：拖拽期 PerformanceObserver 记录 layout 次数；懒加载二次打开网络计数为 0。
+
+## 9. 风险与回滚
+
+| 风险 | 缓解 |
+|---|---|
+| 固定含块改变既有 fixed 行为（罕见宿主） | 挂载自检 + 降级模式；锚点属性/CSS 变量不变，可一键回退旧实现 |
+| 几何写入器集中化引入回归 | PR1 内保留旧写入路径开关（feature-flag），e2e 深扫覆盖 |
+| 桌面自动探测误判（套壳改 URL 格式） | 信号解析白名单 + 手动覆盖位保留 |
+| 路线 B 上游不落地 | 路线 A 完整自洽，不阻塞 |
+| 禁用 ui-sidebar 属 profile 用户决策 | 插件仅文档化，不自动执行 |
+
+## 10. 参考来源
+
+- DSH 源码：`~/.dsh/source/current`（只读）：`ui-layout/src/client/{index.ts,AppFrame.tsx,columns.ts,stores.ts,AppFrame.module.css}`、`ui-slots/src/index.ts`、`ui-sidebar/src/client/index.ts`、`ui-conversation/src/client/apply.ts`、`ui-primitives/Menu.tsx`、`runtime/src/client/slots.ts`
+- DSH Desktop 运行时（本机 .app，只读）：`lib/src-B5373ech.js`、`lib/electron-runtime-C_i38SKA.js`、`lib/preload.cjs`
+- 社区套壳：kyorakuyk/dsh-desktop（https://github.com/kyorakuyk/dsh-desktop）、Lotus-c/DSH-Desktop（https://github.com/Lotus-c/DSH-Desktop）
+- 本仓库：`src/client/index.tsx`、`src/client/Sidebar.tsx`、`src/client/layout.css`、`docs/plans/2026-08-15-skin-compat-design.md`
+- 相关 PR：#226、#135、#82、#108、#111、#138、#153（症状级补丁，本方案吸收其目标）；#208/#90（issue）
+
+## 11. 决策记录与实施偏差记录
+
+- 2026-08-19（第一轮）：方案定稿——路线 A（统一面板宿主）为主线、路线 B（官方槽位）并行提 issue；先出设计文档，实现拆 PR1/PR2 待批准。
+- 2026-08-19（第二轮，实施就绪打磨）：对照源码核实现状——拖拽 rAF 批处理/窄屏不推挤/观察器节流/header 弱锚点**已具备**（§3.1 已标注「实施勿重做」）；chunk 缺口精确为「激活后内存缓存清空重注入」（HTTP 已 304）；§8.1 落到文件级改动清单；§6.2 备好上游 issue 草案。
+- 2026-08-19（第三轮，实证核对）：真实 dsh web 页面 Playwright 探针（§3.4）——frame 子项已含 overlay/handle（nth-child 脆弱性实锤）；`data-pane="conversation"` 为新弱锚点（`[data-slot=conversation]` display:contents 作废）；推挤在 web 无溢出（calc 改动无害）；host 本体 static（fixed 在内层面板，含块层为新元素）。
+- 2026-08-19（第四轮，用户决策）：**路线 B 关闭**——无法向官方提 issue，纯插件侧自己优化注入方式；实现合并为单 PR（分支 `feat/injection-unified-host`），按 §8.1 步骤顺序落地。
+- **实施偏差记录**：
+  - 挂载自检降级实现为「`data-dsh-panel-host-degraded` 属性 + rAF 视口同步」（非独立 absolute 模式，见 §5.1 注释）。
+  - chunk 缓存实现为 **ETag HEAD 重验证**而非内容哈希（bundle 路由已发 ETag，HEAD 更廉价）；`resetChunks()` 保留（测试隔离），激活路径改用 `revalidateChunksOnReactivate()`。
+  - `#root` 防溢出采用 `width: calc(100% - var)` + width/margin **锁步过渡**（避免动画断裂），并实测 1140+300=1440。
+  - 桌面避让复用既有 `titleBarCompat/titleBarStripPx` 通道（未新增 `--dsh-desktop-top-inset` 变量）；darwin 红绿灯区仅预留（当前无左侧贴边控件）。
+  - 测试环境为 Node + 手写 shim（非 jsdom）：`browser-globals.ts` 补 `location`；desktop-env 剥除 `location.search` 前导 `?`（真实 bug，顺带修复）。
+  - 本地 Node 24 跑 `test:mount` 需 `node --expose-internals` 启动 dsh CLI（HMR 服务要求，CI Node 22 无此问题）——本地用 DSH_CMD 包装，不改仓库脚本。
+  - **CR #232 修复（2026-08-19）**：① 降级同步改为按**未修正几何**判定（跟踪自身补偿量，祖先 transform 消失才退出循环）；② chunk 重验证成为 `loadChunk` 屏障（重验证挂起期间不提供缓存，杜绝 HMR 竞态陈旧 exports）；③ 键盘 inset 公式补 `visualViewport.offsetTop` 并监听 `scroll`。

docs/plans/2026-08-20-desktop-scheme-settings-design.md

@@ -0,0 +1,79 @@
+# 桌面端兼容统一方案：四选项下拉（自动检测 / DSH官方Web / 壳预设 / 自定义 CSS）
+
+> 2026-08-20 · 对应分支 `feat/desktop-scheme-settings` · 关联 issue #257、#208、#103/#111；外部 PR #82/#89/#111/#153/#226/#243 处置见文末。
+
+## 背景与问题
+
+better-sidebar 的桌面端适配历史上是"每壳一条补丁"：右上角开关簇与原生标题栏按钮重叠（#87/#101）、点击被拖拽区吞掉（#103/#111）、推挤锚点随 DSH DOM 版本漂移（#208/#226/#262）、WCO 高度硬编码 32px 与实际不符（#257，Electron 版本间 32/36px 不一）。这些补丁全部针对**具体某个壳的 DOM/类名/数值**，换一个壳（Tauri、Pake、新壳）就失效或出错。
+
+**全仓证据盘点**（121 issues + 159 PRs 全量 + 三个候选壳克隆取证）：
+
+| 壳 | ⭐ | issue/PR 提及 | 形态 | 需要什么 |
+|---|---|---|---|---|
+| anywhere-labs/deepseek-harness-desktop | 16.3K | ✅ 大量 | Electron；advanced: win32 WCO 32px / darwin caption 20px；compat 原生框 | win32 已被标准 WCO 覆盖；darwin 20px 让位 |
+| dataelement/dsh-desktop | 1.3K | ❌ 零提及 | Electron；win32 WCO 36px | 已被标准 WCO 覆盖 |
+| Deepseek-Harness-EAC | 1.0K | ❌ 零提及 | Electron Win-only；自绘 36px 玻璃栏（私有标记 `data-dsh-title-bar-height`） | 无 WCO，需 36px 让位（文档示例） |
+| hairyf Tauri 版 | 715 | ✅ pr#229 | Tauri2；44px 导航栏在 iframe **之上** | **无冲突**，无需适配 |
+
+平台分布结论：兼容问题**不是 Windows 独有**（macOS 6 条、Web 3 条），但当前 main 上未闭环的 chrome 兼容基本就是 **Windows 顶栏**（WCO 几何 + 通用 no-drag 兜底）；macOS 的坏 bug（#25/#208）已修复。
+
+## 决策
+
+1. **核心只留 Web 标准机制**：WCO（`navigator.windowControlsOverlay` + `geometrychange`）是唯一"不是适配、是标准"的信号；`-webkit-app-region: no-drag` 是标准属性（普通浏览器/无拖拽区壳惰性无害）。核心代码 grep 不到任何壳类名。
+2. **壳专属适配进用户空间**：「位置兼容模式」升级为**主行下拉**四选项：**自动检测（默认，保守，web 零修改）/ DSH官方Web（显式零适配）/ 壳兼容方案（内置预设，opt-in）/ 自定义方案（自由 CSS + 下移 px，保留齿轮弹窗）**。
+3. **预设准入规则**：issue/PR 中被提及（链接或明确名称）且 GitHub ⭐>100 的壳；v1 仅 anywhere-labs（唯一同时满足者）。预设只做**标题栏 strip 让位**，不做布局推挤/壳类名（尊重"不特意兼容 DSH Desktop 高级模式"）。Tauri 无冲突只写文档；EAC 未提及但提供 custom CSS 示例。
+4. 不向 anywhere-labs 提跨仓库 PR；不修改 DSH 源码。
+
+## 实施
+
+### prefs 模型（`src/prefs-shared.ts` / `src/config.ts` / `src/client/prefs.ts`）
+
+- 新增 `titleBarScheme: 'auto' | 'web' | 'preset' | 'custom'`（默认 `'auto'`）、`titleBarPresetId: string`、`customCss: string`。`web` = 显式「DSH官方Web」，取值链最优先强制 0（连 WCO 也不适用）。
+- schema 中三个新字段**无 default**（schemastery 验证：缺失字段不出现在解析结果里）→ `parsePrefs` 在字段缺失时由旧 `titleBarCompat` 派生：`true` → `custom`（保留 `titleBarStripPx`）；`false`/缺失 → `auto`。写路径镜像写旧字段（`titleBarCompat = scheme !== 'auto'`）供降级。
+
+### 标准件（`src/client/wco.ts` + `src/client/titlebar-strip.ts`）
+
+- `wco.ts`：模块级反应式 store（subscribe/getSnapshot，`useSyncExternalStore` 消费），特性检测 `navigator.windowControlsOverlay`，订阅 `geometrychange` 重读矩形（最大化/还原实时更新）；最后订阅者退订时解绑原生监听；`setWcoSourceForTests` 注入测试源。API 抛错视为 present+0（绝不崩布局）。
+- `titlebar-strip.ts`（唯一决策点，纯函数）：**⓪ `web` 方案强制 0 → ① WCO 真实高度（权威，0 也权威；`visible=false` 幽灵 API 视为缺失）→ ② URL `dsh-desktop-titlebar-inset`（0–120 clamp）→ ③ 预设 `stripFor`（仅 preset 方案）→ ④ 手动 `titleBarStripPx`（仅 custom 方案）→ ⑤ 0**。结果驱动 `body[data-dsh-title-bar-compat]` + `--dsh-title-bar-strip`（CSS 契约不变）。
+- `desktop-env.ts`：只做环境报告（desktop/mode/platform/titlebarInset），SSR 安全；移除旧 `win32OverlayTop` 硬编码。
+
+### 预设与用户 CSS（`src/client/shell-presets.ts` + `Sidebar.tsx` effect）
+
+- `ShellPreset { id; title; desc; stripFor?; css?; detect? }`；v1 一条 `dsh-desktop`：darwin advanced 20px、win32 advanced 32px（无 WCO 兜底）、其余 undefined；`detect` 仅用于设置页「已检测」徽标。
+- 注入：预设 css → `<style data-dsh-preset-css="<id>">`；自定义 css → `<style data-dsh-custom-css="custom">`；追加到 `document.head` 末尾（后写胜出），fiber 卸载/变更即移除。
+- 稳定寻址面：`[data-dsh-toggle-cluster]`、`[data-dsh-panel]`、`[data-dsh-bottom-panel]` data 属性。
+
+### no-drag 兜底（`sidebar.module.css`）
+
+`.toggleCluster` / `.toggleButton` / `.tabBar` 统一 `-webkit-app-region: no-drag`（吸收 #111/#153，补 #103 插件侧缺口）。
+
+### Web 推挤锚点加固（`layout.css`）
+
+复合选择器（同元素双保险）：`#root [data-dsh-frame] > [data-pane="conversation"]` 与 `#root :has(> [data-slot="conversation"])`；拖拽过渡/prefers-reduced-motion 同步；`drag-layout.e2e.ts` 新增两选择器同元素断言。
+
+### 设置 UI（`SideCardSection.tsx` + locales）
+
+「位置兼容模式」行改为**主行下拉**：自动检测（默认）/ DSH官方Web / 各壳预设（命中环境带「已检测」后缀，仅提示）/ 自定义方案（选中后行内出现齿轮，弹窗 = 下移距离 + CSS textarea（Cmd/Ctrl+Enter 提交））。
+
+### 测试
+
+- 单测：`wco.spec.ts`（7 例：检测/读取/取整/geometrychange 通知/抛错降级/换源）、`titlebar-strip.spec.ts`（取值链 5 例）、`shell-presets.spec.ts`（注册表完整性 + dsh-desktop strip 值）、`desktop-env.spec.ts`（重写：inset 参数 clamp + 移除 win32 硬编码）、`prefs.spec.ts`（新字段 + 旧字段迁移）、`plugin-shape.spec.ts`（schema 无默认值语义）、`smoke.spec.ts`（解析结果不含新字段）。
+- e2e（`mount.e2e.ts` 重写桌面场景）：保守 auto（stamp 不触发修改 + data 属性 + no-drag 规则存在）、WCO mock 驱动 strip 且 geometrychange 反应、预设注入（settings.update 写入 scheme=preset → 32px + style 标签）、自定义 CSS 注入（marker 生效）；`drag-layout.e2e.ts` 复合锚点。
+
+## 验证
+
+- `pnpm typecheck` / `pnpm test`（691 passed）/ `pnpm test:mount` 全绿。
+- 普通浏览器零行为变化（auto 无 WCO → 无 strip）。
+- Electron WCO win32（mock 实测）：strip=真实高度（32/36），最大化/还原跟随。
+- anywhere-labs darwin advanced：启用预设后 20px 让位。
+- 核心代码 grep 无壳类名（`.dshDesktopFrame` 等仅存在于预设数据字符串与测试断言之外——v1 预设无 CSS，纯 strip 数据）。
+
+## 实施偏差记录
+
+- 无。计划与实施一致；仅补充：schema 新字段必须无 default 才能让旧文档迁移（否则 settings 服务会把 default 填进解析结果、吞掉迁移），`plugin-shape.spec.ts` 断言了这一点。
+
+## 存量 PR/issue 处置（合并后执行，均含哲学声明）
+
+- 实现后关闭：#257（WCO 标准件）。
+- 关闭：#111/#153（no-drag 吸收）、#226（复合锚点吸收，main 已修）、#243（布局推挤不采纳；标题栏部分进 dsh-desktop 预设）、#108（#232 已吸收 + WCO）、#82/#89/#138（不采纳，指向自定义 CSS/预设路径）。
+- 回复：#208（已修+回归）、#221（自定义 CSS 可微调）、#233（git.ts windowsHide 独立问题）、#167/#240（非 chrome 范畴/文档已有）。

docs/plans/2026-08-20-sidechat-tab-design.md

@@ -0,0 +1,97 @@
+# 侧边对话（Side Chat）Tab 设计
+
+**日期**：2026-08-20
+**状态**：已批准，实施中
+**作者**：opencode + 用户
+**当前版本**：v0.14.1（分支 `feat/sidechat-tab`）
+**目标版本**：v0.14.1（不 bump）
+
+## 1. 目标
+
+1. 对标 Codex 的 side 对话，为 better-sidebar 新增内置 Tab **sidechat**：在当前主会话下开一个**继承主会话完整上下文**的独立子会话线程，线程在 Tab 内可续聊、可查看完整时间线（user / assistant / reasoning / tool）。
+2. **继承必须是结构化的**：线程种子 = 父会话点击时刻的全部事件——已完成回合 + 未回答的 user 消息 + **进行中回合的 assistant 流式输出与工具调用**（原样复制，合成 `step/end`+`turn/end{reason:'interrupted'}` 诚实闭合，子会话看到的是「被切断的进行中回合」而非完整定稿）。
+3. **前缀缓存复用**：子会话与父会话同组合（同 preset / 同 provider/model、无 persona/toolFilter、非 continuable 无 report 增量）→ 子会话首个请求的 token 前缀与父会话当前请求一致（到未回答 user 消息为止），命中 provider 前缀缓存。
+4. **即用即销语义 + 保存为新会话**：线程以 `origin:'subagent'` 创建（主会话列表不可见、子代理目录零噪音）；用户可一键「保存为新会话」——`session.fork` 提升为顶层会话（自动命名、挂工作区、打开）。
+5. 零 dsh-subagent 依赖；dsh-subagent 缺失时功能不受影响。
+
+## 2. 非目标（Out of Scope）
+
+- 不做 `/btw` 一次性侧问（只做持续可续聊线程）。
+- 不做合并回主会话 / 重命名线程。
+- **不改 DSH 源码**：不加 promote RPC、不改 fork 边界、不改 continuation 机制。
+- 工具执行中途（悬挂 tool/call）的事件级继承不可行（provider 拒绝悬挂 assistant 调用）→ 该窗口回退为「截断 + 结构化文本转储」（见 §4）。
+
+## 3. 为什么自建机制（重实现）
+
+用户明确拍板：不走 `ctx.subagents.startContinuable`。原因（已核实源码）：
+
+1. **种子粒度受限**：fork provider 的 `completedTurnPrefix` 固定切在最后一个 `turn/end`（`subagent-fork-in-process/src/index.ts`），`session.fork` RPC 显式拒绝 open-turn 锚点（`core/session` `OPEN_TURN`）——进行中回合永远进不了种子。
+2. **continuable 组合破坏前缀复用**：continuable 子会话的请求头部在继承历史之前插入 `report` 工具 + `tool:report` 提示段（`.agents/notes/implemented/architecture/2026-08-10-fork-children-stay-one-shot.md`，issue #2124）——前缀从请求头即分叉，重发整个转录却零 cache 收益。DSH 官方因此把 fork 绑定为 one-shot。
+3. **无法注入自定义种子**：`ContinuableStartSpec` 无 seed 字段，创建路径无注入点。
+
+自建机制只复用 DSH 公开 host 能力：`ctx.agents.create/resume`（AgentRegistry 公开方法，api-proxy fork 与 subagent driver 同用）、`agent.followup/cancel`（公开方法）、`ctx.get('agentPresets')`、`ctx.get('sessionTitle')`、`ctx.get('sessionPersistence')`。客户端复用 `ctx.sessions.list / fork / binding / open` 与通用 `session.history` RPC。
+
+## 4. 种子算法（`src/sidechat-core.ts`）
+
+1. 复制父会话**全部事件**（点击时刻快照；live 日志 seq === 数组下标，保持连续）。
+2. 日志结束于 turn 外（最后 turn 边界是 turn/end 或无 turn）：种子 = 全部复制事件（可能以未回答 user 消息结尾，合法）。
+3. 结束于 open turn 内：
+   - **当前 step 存在无配对 tool/call（悬挂）** → 回退：切到该 turn 的 `turn/start` 之前（保留已完成回合 + 未回答 user 消息）；进行中内容（含执行中的工具调用，标注 executing）走 `buildOpenTurnSnapshot` 结构化文本转储并入 boundary 消息。原因：validator 不拒悬挂调用（step/end 清空 pendingCalls），但 **provider 拒绝悬挂 assistant 调用**（`core/session/src/repair.ts:108`）。
+   - 否则：追加合成 `step/end{turn,step}`（若 step 未闭合）+ `turn/end{turn, reason:{kind:'interrupted'}}`（编号取自已复制事件的 turn/start、step/start）→ 种子平衡合法（种子逐事件过同一不变式检查器，`core/session/src/index.ts:517-541`；`turn/end` schema 要求 reason，`interrupted` 是合法持久化变体，语义即「回合未完成被切断」——诚实标记，客户端对冻结局部渲染「已停止」）。
+
+子会话首个请求（常见路径）= [已完成回合][未回答 user][冻结的进行中回合：chunk 文本 + 已完成工具调用/结果][boundary+question]。前缀复用不受影响：共享前缀到未回答 user 消息为止，冻结回合位于共享前缀之后。
+
+## 5. 线程生命周期（host 路由，`/sidebar/api/sidechat.*`，既有信任 fence）
+
+- **start** `{sessionId, question}`：父 Agent 必须 live；`buildSidechatInheritance` 出种子 + 转储；`ctx.agents.create({meta:{cwd,parentSession,seedLength,origin:'subagent',delegationDepth:父+1,agentPreset}, seed, agentOptions:父 provider/model, setup:preset 组合})`；`agent.followup(createUserMessage({content:[boundary+转储?+question], source:{kind:'user'}}))`；`sessionTitle.rename(session,'Side: '+截断(question,48))` 钉死线程标签；返回 `{childId}`。
+- **prompt** `{childId, text}`：live → `followup`；absent（重启/关闭后）→ `ctx.agents.resume`（`resolvePresetId` 从 persisted header/events 解析 preset，`agentPresets.resolve/mount` 组合）→ `followup`。
+- **cancel** `{childId}`：`agent.cancel({kind:'user'},{keepInbox:true})`。
+- **dispose** `{childId}`：释放创建/恢复时保存的 AgentHandle disposer（会话与历史保留）。
+
+为什么全走自有路由：`origin:'subagent'` 的会话被通用 RPC 的 agent-lookup 所有权 fence 全面封锁（`api/remotes/agent-lookup.ts` `hasApiRemoteSubagentOwner`），`subagents.prompt` 对我们的线程也无法寻址——自有路由直接调 registry/agent 绕开 fence，且只依赖公开方法。~~线程没有 subagent/descriptor（无目录注册、零噪音：`list-children.ts` 投影为 undefined 即丢弃）~~ **修正（v3 起）**：该判断只对 live 线程成立——cold 线程无 descriptor 时 `resolveColdIdentity` 确定性产出 `corrupt` 诊断行（`list-children.ts:405`），用户实测在 Subagent 页看到「目录损坏」。修复 = 线程种子尾部追加合法的 `subagent/descriptor`（`snapshotSubagentDescriptor`，version 2 / continuable / provider `'sidechat'` / label 即 `Side: ` 标题），线程成为目录里的健康行；SubagentView 与 `subagent-detect.ts` 按 `Side: ` 标签/标题前缀过滤，拓扑 UI 与自动打开触发保持零噪音（模型侧 `list_agents` 也会列出带标签的健康行，而非 corrupt 垃圾）。
+
+## 6. 客户端 Tab（`src/client/SideChatView.tsx`）
+
+- 内置 descriptor：`id:'sidechat'`、`order:35`、`single:true`、图标 `IconNewChatOutline16`。
+- 两栏布局：左线程列表（`sideThreadRows`：`origin==='subagent' && parentId===当前 && displayTitle 前缀 'Side: '`；订阅 `ctx.sessions.list`）；右详情（时间线 + 输入框 + 保存/停止/关闭按钮）。
+- 时间线：轮询 `connection.api.sessions.history`（通用 RPC，未 fence；`session/end-seed` 截断 + boundary 行丢弃 + chunk 流式累加 + 工具配对——`src/client/sidechat-transcript.ts` 纯映射）；可见且运行中 ~2s，seq 去重缓存；`visible=false` 停轮询。
+- 保存为新会话：`ctx.sessions.fork({sessionId: threadId, increaseTitle:true})` → `binding(newId).session.rename(标题去前缀)` → `ctx.sessions.open(newId)`。无已完成回合 → 禁用 + 提示；末条追问未完成 → 提示不包含（fork 边界=最后 turn/end）。
+- 选中线程持久化：`tab.meta.threadId`（既有 per-session localStorage 通道）。
+
+## 7. 边界情况与失败模式
+
+| 场景 | 行为 |
+|---|---|
+| 父会话无 live agent | 409 `sidechat-error` 内联提示 |
+| 父会话进行中（流式/思考/工具已返回） | 完整事件入种子 + interrupted 合成闭合 |
+| 父会话工具执行中途点击新建 | 悬挂 tool/call → 截断 + 结构化转储（工具标注 executing） |
+| seam 缺失（agentPresets/sessionTitle/sessionPersistence） | 降级：默认组合 / 自动标题 / 无 preset 组合的冷恢复 |
+| DSH 重启后续聊 / 线程关闭后追问 | `ctx.agents.resume`（persisted preset 组合） |
+| 线程无已完成回合 | 保存禁用 + 提示 |
+| 线程末条追问未完成 | 保存前提示不包含 |
+| 与 dsh-sidechain 并存 | 各自独立；双方线程都有 descriptor（目录健康行），SubagentView 按 `Side: ` 前缀过滤均不可见；双方共享 `Side: ` 标签约定，线程互见 |
+
+## 8. 测试与自验
+
+- 单测：`sidechat-core.spec.ts`（种子全分支：turn 外 / 空 / 仅 pending user / open turn 无工具 / 成对工具 / 悬挂回退 / 多 step 闭合 / seq 连续性；转储保真；线程过滤；保存资格；preset 解析；boundaryDelivered）、`sidechat-seed-validation.spec.ts`（真实 `Session.create` 校验器接受种子产物）、`sidechat-transcript.spec.ts`（种子截断、boundary 丢弃、chunk 流式、工具配对、孤儿失败工具）、`sidechat-routes.spec.ts`（start 带问/空问立即创建、首条 prompt 包裹边界+快照并改名、prompt live+cold、cancel、dispose、info live/cold/未知）、`builtins.spec.ts` 7 tab + sidechat 每线程一 Tab 铸造/去重。
+- e2e 挂载冒烟：+ 菜单深扫含 Side Chat；**host 路由级自验**（真实 keyless dsh web 中 sidechat.start/prompt/cancel/dispose/info 全链路 + 空问题立即创建流程，种子会话为父）。
+- 真实环境手测（实施后勾选）：新建线程 → 追问往返 → 流式渲染 → 工具行 → 主会话流式中新建（冻结继承）→ 工具执行中途新建（回退转储）→ 重启后续聊 → 保存为新会话 → 刷新持久。
+
+## 9. 复用门记录
+
+搜索面：DSH checkout `docs/` + `packages/`（关键词 side conversation / sidetrack / thread / promote）+ dsh-external hub catalog（`search-org.mjs`，323 repos）。命中：`dsh-external/dsh-sidechain`（Codex 风格侧会话，/side & /btw，临时 fork + 侧栏面板），但**无 better-sidebar Tab、无保存为新会话**；用户拍板独立实现（「我们做独立实现」），sidechain 保持不动。本文档与 PR 记录该结论。
+
+## 10. 实施偏差记录
+
+- 路由键命名：`buildSidechatApi` 返回对象的键必须是**完整 wire 方法名**（`'sidechat.start'` 等，/sidebar/api 分发器按 `api[method]` 查找），而非短名 `start/prompt/…`。首次实现用了短名，单测直接调对象方法未暴露，真实挂载冒烟以 404 抓出（该冒烟因此新增了路由级自验，见 §8）。
+- 种子函数入参类型：sidechat-core 使用宽松结构类型 `SidechatLogEvent {type, seq, time, data: unknown}`（同时接受 host 真实 `SessionEvent` 与 client 的 `SidebarSessionEvent` 镜像），避免两半的类型图互相污染。
+- keyless 挂载冒烟无法验证 boundary 消息落盘：`agent.followup` 的消息先入 inbox，被 turn claim 后才写入 session 日志——keyless（无模型路由）下 turn 不会 claim。挂载冒烟的深度断言因此改为 **session.list 成员校验**（证明子会话真实创建，provider 无关）；boundary 落盘与流式/回答在真实 provider 环境手测（§8 清单）。
+- **UI 两轮返工（用户实测驱动）**：
+  1. 种子事件信封字段丢失（用户实测报 `invalid seed event … requires a surfaceOp marker`）：`copyEvents` 重建事件时只保留 `{type,seq,time,data}`，剥掉了 `surfaceOp`/`sourceEventSeqs`/`ignorable`，而种子校验器要求 surface-eligible 事件必带 `surfaceOp`。修复 = 信封字段原样透传 + 新增 `sidechat-seed-validation.spec.ts`（用真实 `@deepseek-ai/dsh-session` 的 `Session.create` 校验器跑种子产物，回归守护）。
+  2. 交互模型从「单 Tab + 内嵌线程列表 + 首问表单」改为 **Codex app 对齐的「每线程一 Tab」**：`createTab` 铸造 `sidechat:new-<uuid>`（meta `autoCreate`，视图挂载即调 `sidechat.start` 空问题立即建线程）或消费 `parkSidechatReopen` 停泊的 `sidechat:<threadId>` 重连 Tab；`dedupeKey = meta.threadId` 保证同线程聚焦不重复；`onClose` 释放 live agent（历史保留，头部菜单可重开）。配套后端变化：`sidechat.start` 的 `question` 变为可选（空 = 仅建线程，快照停泊在 `pendingSnapshots`）；`sidechat.prompt` 检测边界未送达时（`boundaryDelivered` 扫日志）自动包裹边界 + 停泊快照并用首条消息改名；新增 `sidechat.info` 路由（live 状态 + provider/model/preset 身份，供头部 Agent 徽标）。UI 对齐主对话区：用户右对齐气泡（`--dsw-specific-bubble`）、assistant 通栏 markdown、胶囊 composer（`--dsw-specific-input-major` + 圆形 accent 发送/停止钮 + 自动增高 textarea）、运行扫光状态行与工具行（`StateDot` + shimmer），动效全部 ≤200ms 交叉淡化并受 `prefers-reduced-motion` 收敛。
+- （预留）实施过程中如有与本文档的其他偏差，在此记录。
+- **第三轮实测修复（4 bug）**：
+  1. 「保存为新会话」报 `Cannot read properties of undefined (reading 'list')`：`handleSave` 把 `ctx.sessions.fork` 解构成自由函数再调用，丢失 `this`——client-runtime 的 `service.fork` 内部读 `this.list.getSnapshot()`（标题递增）。修复 = 保持方法调用形态（`ctx.sessions.fork({...})`）。
+  2. 图标语义：线程切换菜单改自绘 `IconHistoryOutline16`（逆时针时钟）、保存按钮改自绘 `IconSaveOutline16`（软盘），沿用 1.5px 描边规范（primitives 无现成 history/save 图标）。
+  3. 重开线程 Tab 丢工具行：根因**不在宿主**（`session.history` cold 路径原样返回 `tool/call`，见 `api-proxy.ts:749` 与 `chunk-rows.ts` 的无损 chunk 压缩）而在首挂回源窗口——旧实现 8 事件/页 × 32 页 = 256 事件上限，而 cold 读会把 chunk-rows 展开回每个流式 delta 一条事件，一轮回答动辄数百事件，较早的 `tool/call` 掉出窗口（settled 文本靠最终 `assistant/message` 幸存）。修复 = 抽出 `collectOwnEvents`（200 事件/页 × 40 页帽、日志穷尽/无标记时落定 `seedBoundary:0` 停止每轮重走），单测覆盖四分支。
+  4. Subagent 页「目录损坏」行：见 §5 修正——种子追加 descriptor + SubagentView/subagent-detect 按前缀过滤（`isSideThreadSummary` 同时修好 autoOpenSubagent 误触发与计数膨胀）。旧版创建的线程仍是 corrupt 诊断行，由 SubagentView 的标题前缀过滤兜底隐藏。

dsh.plugin.json

@@ -1,6 +1,6 @@
 {
   "id": "dsh-external/dsh-better-sidebar",
-  "version": "0.6.0",
+  "version": "0.15.1",
   "main": "./lib/index.js",
   "description": "VSCode 风格右侧侧边栏：文件资源管理器 / 编辑器 / 终端 / Git / 浏览器，按会话隔离。暴露服务供其他插件注册侧边栏页面和文件预览器",
   "engines": {

package.json

@@ -1,9 +1,15 @@
 {
   "name": "dsh-better-sidebar",
-  "version": "0.6.0",
+  "version": "0.15.1",
   "description": "DSH web plugin: a VSCode-like right sidebar (explorer / editor / terminal / git / browser), isolated per conversation session. Exposes a service for other plugins to register sidebar tabs and file viewers.",
-  "private": true,
   "type": "module",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/omdsh-dev/DSH-better-sidebar"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
   "main": "lib/index.js",
   "types": "lib/types/index.d.ts",
   "exports": {
@@ -34,11 +40,16 @@
     "node": ">=20"
   },
   "dsh": {
+    "bundle": {
+      "patch": "./cordis.patch.yml"
+    },
     "client": {
       "inject": [
         "@deepseek-ai/dsh-client-runtime",
+        "@deepseek-ai/dsh-client-locale",
         "@deepseek-ai/dsh-client-ui-slots",
-        "@deepseek-ai/dsh-client-ui-conversation"
+        "@deepseek-ai/dsh-client-ui-conversation",
+        "@deepseek-ai/dsh-client-modules"
       ],
       "platform": "web"
     }
@@ -47,39 +58,57 @@
     "lib/index.js",
     "lib/invariant.js",
     "lib/client.js",
+    "lib/client-registry.js",
+    "lib/client-terminal.js",
+    "lib/client-editor.js",
+    "lib/client-mermaid.js",
     "lib/types/**/*.d.ts",
-    "src"
+    "src",
+    "scripts/install.sh",
+    "scripts/install.ps1",
+    "cordis.patch.yml",
+    "README.md",
+    "README_EN.md",
+    "LICENSE"
   ],
   "scripts": {
     "build": "rm -rf lib && tsc -p tsconfig.build.json && tsdown",
+    "prepublishOnly": "pnpm build",
     "typecheck": "tsc --noEmit",
     "bundle": "tsdown",
     "watch": "tsdown --watch",
     "prepare": "tsdown",
-    "test": "vitest run"
+    "test": "vitest run",
+    "test:mount": "bash scripts/e2e-mount.sh",
+    "check:consumer-types": "bash scripts/check-consumer-types.sh"
   },
   "license": "MIT",
   "peerDependencies": {
-    "@deepseek-ai/dsh-agent": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-runtime": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-schema-form": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-conversation": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-primitives": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-settings": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-web-react": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-host-webserver": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-llm": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-session": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-settings": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-tools": "^0.0.1-rc.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "^4.0.1",
+    "@deepseek-ai/dsh-agent": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-locale": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-runtime": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-ui-conversation": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-ui-primitives": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-ui-settings": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-client-ui-slots": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-host-webserver": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-invariants": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-llm": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-session": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-subagent": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-settings": "^0.1.0-rc.8",
+    "@deepseek-ai/dsh-tools": "^0.1.0-rc.8",
+    "cordis": "^4.0.0-rc.8",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   },
+  "peerDependenciesMeta": {
+    "cordis": {
+      "optional": true
+    }
+  },
   "dependencies": {
-    "@aiden0z/pptx-renderer": "^1.2.4",
     "@codemirror/commands": "^6.10.4",
     "@codemirror/lang-cpp": "^6.0.3",
     "@codemirror/lang-css": "^6.3.1",
@@ -101,39 +130,37 @@
     "@codemirror/state": "^6.7.1",
     "@codemirror/view": "^6.43.8",
     "@lezer/highlight": "^1.2.3",
-    "@univerjs/preset-sheets-core": "^0.25.1",
-    "@univerjs/presets": "^0.25.1",
-    "@xterm/addon-fit": "^0.10.0",
     "clsx": "^2.1.1",
-    "docx-preview": "^0.4.0",
+    "mermaid": "^11.16.1",
     "node-pty": "^1.1.0",
     "rxjs": "^7.8.2",
     "schemastery": "^3.18.0",
-    "ws": "^8.18.0",
-    "xlsx": "^0.18.5",
-    "xterm": "^5.3.0"
+    "ws": "^8.18.0"
   },
   "devDependencies": {
-    "@deepseek-ai/dsh-agent": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-runtime": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-schema-form": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-conversation": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-primitives": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-settings": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-client-web-react": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-host-webserver": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-llm": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-session": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-settings": "^0.0.1-rc.1",
-    "@deepseek-ai/dsh-tools": "^0.0.1-rc.1",
+    "@cordisjs/plugin-loader": "^1.0.0-rc.5",
+    "@deepseek-ai/dsh-agent": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-locale": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-runtime": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-ui-conversation": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-ui-primitives": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-ui-settings": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-client-ui-slots": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-host-webserver": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-invariants": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-llm": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-session": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-settings": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-subagent": "0.1.1-rc.1",
+    "@deepseek-ai/dsh-tools": "0.1.1-rc.1",
+    "@playwright/test": "^1.62.1",
     "@types/node": "^24.0.0",
     "@types/react": "~18.3.1",
     "@types/react-dom": "~18.3.1",
     "@types/ws": "^8.5.10",
-    "@cordisjs/plugin-loader": "^1.0.0-rc.5",
-    "cordis": "^4.0.0-rc.7",
+    "@xterm/addon-fit": "^0.11.0",
+    "@xterm/xterm": "^5.5.0",
+    "cordis": "^4.0.0-rc.8",
     "jsdom": "^29.1.1",
     "lightningcss": "^1.32.0",
     "react": "^18.2.0",

playwright.config.ts

@@ -0,0 +1,39 @@
+/**
+ * Playwright config for the headless-render mount lane (tests/e2e).
+ *
+ * This lane does NOT spawn the server itself: `scripts/e2e-mount.sh` boots a
+ * real `dsh web` instance (with the npm-packed plugin mounted through the
+ * official `dsh plugin add` channel) and injects the base URL through
+ * `DSH_E2E_URL`. The spec's job is to render that URL in a headless Chromium
+ * and prove the plugin mounts without crashing the shell.
+ *
+ * Specs are named `*.e2e.ts` (not `*.spec.ts`) so vitest's default include
+ * never collects them; vitest.config.ts excludes the directory as well.
+ */
+import { defineConfig } from '@playwright/test'
+
+export default defineConfig({
+  testDir: './tests/e2e',
+  // The lane's specs are named *.e2e.ts (so vitest's default include never
+  // collects them); tell Playwright to pick exactly that shape.
+  testMatch: '**/*.e2e.ts',
+  // A deterministic gate: no retries, one worker, one browser. The whole lane
+  // is a crash probe against one server instance, so serial execution keeps
+  // the assertions meaningful (a crash would trip the very next check).
+  retries: 0,
+  workers: 1,
+  fullyParallel: false,
+  timeout: 120_000,
+  reporter: [
+    ['list'],
+    // Local debugging artifact; CI uploads the report dir on failure.
+    ['html', { open: 'never' }],
+  ],
+  use: {
+    browserName: 'chromium',
+    headless: true,
+    viewport: { width: 1440, height: 900 },
+    screenshot: 'only-on-failure',
+    trace: 'retain-on-failure',
+  },
+})

pnpm-workspace.yaml

@@ -9,6 +9,7 @@ allowBuilds:
   protobufjs: true
 
 minimumReleaseAgeExclude:
+  - '@deepseek-ai/*'
   - '@deepseek-ai/cordis-plugin-include@1.0.5-rc.1'
   - '@deepseek-ai/cordis-plugin-loader@1.0.1-rc.1'
   - '@deepseek-ai/cordis@4.0.1-rc.1'
@@ -65,3 +66,8 @@ minimumReleaseAgeExclude:
   - '@deepseek-ai/dsh-user-interaction@0.0.1-rc.1'
   - '@deepseek-ai/dsh-workspace@0.0.1-rc.1'
   - '@deepseek-ai/schemastery@3.18.1-rc.1'
+  - '@deepseek-ai/cordis-plugin-include@1.0.6'
+  - '@deepseek-ai/cordis-plugin-loader@1.0.2'
+  - '@deepseek-ai/cordis@4.0.1'
+  - '@deepseek-ai/cosmokit@1.8.2'
+  - '@deepseek-ai/schemastery@3.18.1'

scripts/check-consumer-types.sh

@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+# Consumer-facing type surface check: build a tiny standalone consumer that
+# imports `dsh-better-sidebar/client/service` WITHOUT @types/node and with
+# skipLibCheck: false, then type-check it with the repo's tsc.
+#
+# This is the exact scenario the v0.12.0 API work cares about: the shipped
+# declaration graph (service.d.ts -> context-types.d.ts -> state/api) must
+# resolve and type-check for a browser-only plugin author. Run AFTER
+# `pnpm build` (the check reads lib/types).
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+# The check reads the BUILT declaration surface (lib/types) — fail loudly
+# instead of silently passing when the build output is missing.
+if [ ! -f lib/types/client/service.d.ts ]; then
+  echo "[check-consumer-types] FAIL: lib/types/client/service.d.ts not found — run 'pnpm build' first." >&2
+  exit 1
+fi
+
+WORK="$(mktemp -d)"
+trap 'rm -rf "$WORK"' EXIT
+
+mkdir -p "$WORK/node_modules"
+ln -s "$(pwd)" "$WORK/node_modules/dsh-better-sidebar"
+
+cat > "$WORK/check.ts" <<'EOF'
+import { SIDEBAR_FEATURES, SIDEBAR_SERVICE_VERSION } from 'dsh-better-sidebar/client/service'
+import type {} from 'dsh-better-sidebar/client/service'
+import type {
+  BetterSidebarService, FileViewerDescriptor, OpenTabSeed, SidebarSettingsRenderProps,
+  TabComponentProps, TabDescriptor,
+} from 'dsh-better-sidebar/client/service'
+import type { SessionScope, SidebarSnapshot, SidebarState, SidebarStore, SidebarTab } from 'dsh-better-sidebar/client/service'
+import type { SidebarPrefs } from 'dsh-better-sidebar/client/service'
+
+declare const ctx: { betterSidebar: BetterSidebarService }
+const tab: TabDescriptor = {
+  id: 'x:tab',
+  title: 'X',
+  single: true,
+  badge: (_ctx, _scope, state: SidebarState) => state.expanded.length,
+  onOpen: (_tab: SidebarTab, _scope: SessionScope) => {},
+  onClose: (_tab: SidebarTab, _scope: SessionScope) => {},
+  createTab: (state: SidebarState) => ({ tab: { id: 'x:1', type: 'x:tab', title: 'X', meta: {} } }),
+  settings: {
+    toggles: [{ key: 'autoOpenSubagent', title: 'A' }],
+    pluginToggles: [{ key: 'k', title: 'K', type: 'number', min: 0, max: 9 }],
+    render: (props: SidebarSettingsRenderProps) => { props.updatePluginSetting('a', 1); return null },
+  },
+  component: (props: TabComponentProps) => null,
+}
+ctx.betterSidebar.registerTab(tab)
+const viewer: FileViewerDescriptor = {
+  id: 'x:csv', exts: ['csv'], fetchStrategy: 'custom',
+  load: (_path, _scope, signal?: AbortSignal) => { void signal; return Promise.resolve([]) },
+  component: () => null,
+}
+ctx.betterSidebar.registerFileViewer(viewer)
+const seed: OpenTabSeed = { type: 'x:tab', title: 'X', meta: { a: 1 } }
+ctx.betterSidebar.openTab(seed, { sessionId: 's1' })
+ctx.betterSidebar.openFile({ sessionId: 's1' }, '/p/a.csv')
+ctx.betterSidebar.updateTab('t', { meta: { b: 2 } })
+const snap: SidebarSnapshot = ctx.betterSidebar.getSnapshot()
+const prefs: SidebarPrefs = snap.prefs
+const store: SidebarStore = null as unknown as SidebarStore
+void prefs; void store; void ctx.betterSidebar.version; void ctx.betterSidebar.features
+void SIDEBAR_SERVICE_VERSION; void SIDEBAR_FEATURES
+EOF
+
+cat > "$WORK/tsconfig.json" <<'EOF'
+{
+  "compilerOptions": {
+    "target": "ES2023", "module": "esnext", "moduleResolution": "bundler",
+    "strict": true, "noEmit": true, "skipLibCheck": false, "types": [],
+    "jsx": "react-jsx", "lib": ["ES2023", "DOM"]
+  },
+  "include": ["check.ts"]
+}
+EOF
+
+echo "[check-consumer-types] type-checking a browser-only consumer (no @types/node)..."
+echo "[check-consumer-types]   pass 1: skipLibCheck: true (the realistic consumer experience) — must be fully clean"
+./node_modules/.bin/tsc -p "$WORK/tsconfig.json" --skipLibCheck true
+echo "[check-consumer-types]   pass 2: skipLibCheck: false — OUR declaration surface (lib/types/**) must be clean"
+echo "[check-consumer-types]   (upstream cordis/cosmokit declaration noise is filtered out; it predates this plugin)"
+set +e
+./node_modules/.bin/tsc -p "$WORK/tsconfig.json" --skipLibCheck false > "$WORK/strict.log" 2>&1
+STATUS=$?
+set -e
+# Fail only on errors that mention OUR package / declarations / the fixture.
+if grep -E "dsh-better-sidebar|lib/types|check\.ts" "$WORK/strict.log" | grep -v "node_modules/cordis\|node_modules/cosmokit"; then
+  echo "[check-consumer-types] FAIL: errors in the dsh-better-sidebar declaration surface:" >&2
+  grep -E "dsh-better-sidebar|lib/types|check\.ts" "$WORK/strict.log" >&2
+  exit 1
+fi
+if [ "$STATUS" -ne 0 ]; then
+  echo "[check-consumer-types] pass 2 note: strict mode only reports upstream declaration noise:"
+  grep -v "dsh-better-sidebar\|lib/types\|check\.ts" "$WORK/strict.log" | head -5
+fi
+echo "[check-consumer-types] OK: the client/service declaration surface is node-free and self-contained."
+

scripts/e2e-aggregate-mount.sh

@@ -0,0 +1,173 @@
+#!/usr/bin/env bash
+# =============================================================================
+# dsh-better-sidebar 聚合双挂载冒烟（CI + 本地）：
+#
+#   场景：一个聚合 bundle（tests/fixtures/aggregate-better-sidebar）先以独立
+#   条目 id 挂载 dsh-better-sidebar，插件自身的 bundle patch 后到 —— 旧行为
+#   两个实例都注册 /sidebar/api，整个插件树启动失败（duplicate prefix
+#   route）；新行为插件行检测到已有启用中的同包名挂载后自动 disabled，由
+#   聚合行接管 sidebar。
+#
+#   流程：
+#     1. 打包 fixture 聚合包；
+#     2. 用官方 CLI 把 fixture 先装进全新 scratch profile，再把插件 tarball
+#        装进同一 profile（复刻真实安装顺序：聚合先行、dsh plugin add 后到）；
+#     3. 启动真实 `dsh web`（keyless，--port 0）；
+#     4. 断言：日志出现启动 URL、无 "duplicate prefix route"、/sidebar/api
+#        路由存活（POST 未知方法应返回 404 JSON 而非崩溃）。
+#
+# 用法：
+#   bash scripts/e2e-aggregate-mount.sh
+#
+# 环境变量（均可省略）：
+#   DSH_CMD        dsh 命令；缺省 `npx -y --package @deepseek-ai/dsh dsh`
+#                  （与 pm2 启动器同源，避免依赖可能失效的 PATH dsh）
+#   TARBALL        插件 tarball；缺省仓库根 dsh-better-sidebar-*.tgz（须已 pack）
+#   PORT           固定端口（默认 0 = OS 分配，从日志解析 URL）
+#   DSH_HOME_BASE  scratch 根目录（默认系统临时目录）。脚本始终在其下新建
+#                  本调用拥有的独立子目录，只写入/删除该子目录；调用方提供
+#                  的目录本身（可能是真实 ~/.dsh）绝不写入或删除。
+#   KEEP_HOME      非空时保留 scratch 目录（调试用）
+#
+# 退出码 = 0 通过；非 0 失败。服务器与 scratch 目录由 trap 兜底清理。
+# =============================================================================
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+FIXTURE_DIR="$ROOT/tests/fixtures/aggregate-better-sidebar"
+
+DSH_CMD="${DSH_CMD:-npx -y --package @deepseek-ai/dsh dsh}"
+TARBALL="${TARBALL:-}"
+PORT="${PORT:-0}"
+KEEP_HOME="${KEEP_HOME:-}"
+
+say()  { printf '\033[32m[e2e-aggregate-mount]\033[0m %s\n' "$*"; }
+warn() { printf '\033[33m[e2e-aggregate-mount]\033[0m %s\n' "$*" >&2; }
+die()  { printf '\033[31m[e2e-aggregate-mount]\033[0m %s\n' "$*" >&2; exit 1; }
+
+command -v node >/dev/null 2>&1 || die "未找到 node（DSH 运行需要 Node.js >= 20）"
+command -v pnpm >/dev/null 2>&1 || die "未找到 pnpm（dsh plugin 转发给 pnpm）"
+command -v npm >/dev/null 2>&1 || die "未找到 npm（打包 fixture 需要）"
+command -v curl >/dev/null 2>&1 || die "未找到 curl"
+
+if [ -z "$TARBALL" ]; then
+  TARBALL="$(ls "$ROOT"/dsh-better-sidebar-*.tgz 2>/dev/null | head -1 || true)"
+fi
+[ -n "$TARBALL" ] && [ -f "$TARBALL" ] || die "未找到插件 tarball：先在本仓库跑 pnpm build && npm pack，或用 TARBALL 指定"
+
+# ── scratch home ────────────────────────────────────────────────────────────
+# 始终在本调用拥有的全新目录里运行：调用方给了 DSH_HOME_BASE（可能是真实
+# ~/.dsh）时，只在其下新建子目录并只删除该子目录；缺省时直接用系统临时
+# 目录。调用方提供的目录本身绝不写入或删除。
+DSH_HOME_BASE="${DSH_HOME_BASE:-}"
+if [ -n "$DSH_HOME_BASE" ]; then
+  SCRATCH="$(mktemp -d "$DSH_HOME_BASE/dsh-e2e-agg.XXXXXX")"
+else
+  SCRATCH="$(mktemp -d /tmp/dsh-e2e-agg.XXXXXX)"
+fi
+export DSH_HOME="$SCRATCH"
+LOG_DIR="$DSH_HOME/logs"; mkdir -p "$LOG_DIR"
+OUT_LOG="$LOG_DIR/dsh-web.out.log"; ERR_LOG="$LOG_DIR/dsh-web.err.log"
+SERVER_PID=""
+TMP_DIR=""
+cleanup() {
+  if [ -n "$SERVER_PID" ] && kill -0 "$SERVER_PID" 2>/dev/null; then
+    kill "$SERVER_PID" 2>/dev/null || true
+    wait "$SERVER_PID" 2>/dev/null || true
+  fi
+  if [ -n "$TMP_DIR" ] && [ -d "$TMP_DIR" ]; then
+    rm -rf "$TMP_DIR"
+  fi
+  if [ -z "$KEEP_HOME" ] && [ -d "$SCRATCH" ]; then
+    rm -rf "$SCRATCH"
+  else
+    warn "KEEP_HOME 已设置，保留 $SCRATCH"
+  fi
+}
+trap cleanup EXIT
+
+# ── 打包 fixture 聚合包 ─────────────────────────────────────────────────────
+TMP_DIR="$(mktemp -d)"
+( cd "$FIXTURE_DIR" && npm pack --silent --pack-destination "$TMP_DIR" >/dev/null )
+FIXTURE_TGZ="$(ls "$TMP_DIR"/*.tgz 2>/dev/null | head -1 || true)"
+[ -n "$FIXTURE_TGZ" ] || die "fixture 打包失败"
+
+# ── 引导 scratch profile（web 模板）────────────────────────────────────────
+# 先写 pnpm-workspace.yaml 的 allowBuilds / minimumReleaseAgeExclude，避免
+# pnpm 11 strict-dep-builds 拦截 node-pty/protobufjs——同 e2e-mount.sh。
+PROFILE_DIR="$DSH_HOME/profiles/web"
+mkdir -p "$PROFILE_DIR"
+cat > "$PROFILE_DIR/package.json" <<EOF
+{
+  "name": "dsh-profile-web",
+  "private": true,
+  "dependencies": {},
+  "dsh": {
+    "profile": {
+      "bundles": ["@deepseek-ai/dsh-base", "@deepseek-ai/dsh-web-app"]
+    }
+  }
+}
+EOF
+printf '[]\n' > "$PROFILE_DIR/cordis.patch.yml"
+cat > "$PROFILE_DIR/pnpm-workspace.yaml" <<'EOF'
+packages:
+  - .
+
+nodeLinker: hoisted
+autoInstallPeers: false
+
+allowBuilds:
+  node-pty: true
+  protobufjs: true
+
+minimumReleaseAgeExclude:
+  - dsh-better-sidebar
+EOF
+
+# ── 组装 profile：聚合先行，插件后到 ──────────────────────────────────────
+say "安装 fixture 聚合包（先行）…"
+$DSH_CMD plugin --profile web add "file:$FIXTURE_TGZ"
+say "安装插件 tarball（后到）…"
+$DSH_CMD plugin --profile web add "file:$TARBALL"
+
+# ── 启动真实 dsh web ───────────────────────────────────────────────────────
+say "启动 dsh web（--port ${PORT}，日志 ${LOG_DIR}）…"
+$DSH_CMD web --port "$PORT" >"$OUT_LOG" 2>"$ERR_LOG" &
+SERVER_PID=$!
+
+# 等待启动 URL 或进程退出（最多 120s）
+URL=""
+for _ in $(seq 1 120); do
+  if ! kill -0 "$SERVER_PID" 2>/dev/null; then break; fi
+  URL="$(grep -oE 'http://127\.0\.0\.1:[0-9]+' "$OUT_LOG" | tail -1 || true)"
+  [ -n "$URL" ] && break
+  sleep 1
+done
+if [ -z "$URL" ]; then
+  warn "out log 尾部：$(tail -5 "$OUT_LOG" 2>/dev/null || true)"
+  warn "err log 尾部：$(tail -5 "$ERR_LOG" 2>/dev/null || true)"
+  die "dsh web 未在 120s 内启动"
+fi
+say "已启动：$URL"
+
+# ── 断言 ────────────────────────────────────────────────────────────────────
+if grep -q "duplicate prefix route" "$ERR_LOG" "$OUT_LOG" 2>/dev/null; then
+  die "检测到 duplicate prefix route（双挂载未退让）"
+fi
+
+# 真实方法探活：terminal.deps 是插件自己的 handler（writeOk → HTTP 200 +
+# {"ok":true,...}）。成功响应证明至少一个实例真正注册了 /sidebar/api 路由
+# ——generic missing-route 404 无法冒充（P2: Probe a real sidebar API method）。
+DEPS="$(curl -s -X POST "$URL/sidebar/api/terminal.deps" 2>/dev/null || true)"
+if ! printf '%s' "$DEPS" | grep -q '"ok":true'; then
+  die "/sidebar/api/terminal.deps 未返回 ok:true（响应：$(printf '%s' "$DEPS" | head -c 200)）"
+fi
+say "/sidebar/api/terminal.deps → ok:true（真实 handler 存活）"
+
+STATUS="$(curl -s -o /dev/null -w '%{http_code}' -X POST "$URL/sidebar/api/__e2e_unknown__" 2>/dev/null || true)"
+say "/sidebar/api POST 未知方法 → HTTP ${STATUS}（期望 404）"
+[ "$STATUS" = "404" ] || die "/sidebar/api 未知方法未按预期返回 404（HTTP ${STATUS}）"
+
+say "通过：聚合双挂载场景下插件自动退让，侧边栏由聚合行接管。"

scripts/e2e-mount.sh

@@ -0,0 +1,167 @@
+#!/usr/bin/env bash
+# =============================================================================
+# dsh-better-sidebar 挂载冒烟编排（CI + 本地）：
+#
+#   1. 用官方 CLI 把 npm 打包产物（tarball）真实挂载进一个全新 scratch
+#      profile（`dsh plugin --profile web add file:<tarball>`，触发
+#      dsh.profile.bundles 协调，与用户安装路径一致）；
+#   2. 启动真实 `dsh web`（keyless，--port 0 取 OS 分配端口）；
+#   3. 运行 tests/e2e 无头渲染 lane（Playwright Chromium）：断言外壳与
+#      插件挂载、无崩溃标记，并驱动内置 tab 深扫。
+#
+# 用法：
+#   bash scripts/e2e-mount.sh [--grep <playwright-filter>]
+#
+# 环境变量（均可省略）：
+#   DSH_CMD        dsh 命令；缺省 PATH 上的 `dsh`，回退 npx 拉官方包
+#   TARBALL        插件 tarball；缺省仓库根 dsh-better-sidebar-*.tgz（须已 pack）
+#   PORT           固定端口（默认 0 = OS 分配，从日志解析 URL）
+#   DSH_HOME_BASE  覆盖 scratch 根目录（默认系统临时目录）。脚本始终在其下
+#                  新建本调用拥有的独立子目录，只写入/删除该子目录；调用方
+#                  提供的目录本身（可能是真实 ~/.dsh）绝不写入或删除。
+#   KEEP_HOME      非空时保留 scratch home（调试用）
+#
+# 退出码 = playwright 的退出码；服务器与 scratch 目录由 trap 兜底清理。
+# =============================================================================
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+DSH_CMD="${DSH_CMD:-dsh}"
+PORT="${PORT:-0}"
+TARBALL="${TARBALL:-}"
+GREP_FILTER=""
+if [ "${1:-}" = "--grep" ]; then GREP_FILTER="${2:?--grep 需要参数}"; fi
+
+say()  { printf '\033[32m[e2e-mount]\033[0m %s\n' "$*"; }
+warn() { printf '\033[33m[e2e-mount]\033[0m %s\n' "$*" >&2; }
+die()  { printf '\033[31m[e2e-mount]\033[0m %s\n' "$*" >&2; exit 1; }
+
+command -v node >/dev/null 2>&1 || die "未找到 node（DSH 运行需要 Node.js >= 20）"
+command -v pnpm >/dev/null 2>&1 || die "未找到 pnpm（dsh plugin 转发给 pnpm）"
+
+# dsh CLI 解析：PATH 上的 dsh 优先，否则 npx 拉官方包（同 scripts/install.sh）
+if ! command -v "$DSH_CMD" >/dev/null 2>&1; then
+  if command -v npx >/dev/null 2>&1; then
+    say "PATH 上无 $DSH_CMD，回退 npx -y --package @deepseek-ai/dsh"
+    DSH_CMD="npx -y --package @deepseek-ai/dsh dsh"
+  else
+    die "未找到 $DSH_CMD 或 npx；请先安装 DSH CLI（npm i -g @deepseek-ai/dsh）或用 DSH_CMD 指定"
+  fi
+fi
+
+# tarball 解析
+if [ -z "$TARBALL" ]; then
+  TARBALL="$(ls "$ROOT"/dsh-better-sidebar-*.tgz 2>/dev/null | head -1 || true)"
+fi
+[ -n "$TARBALL" ] && [ -f "$TARBALL" ] || die "找不到 tarball（TARBALL 或 \$ROOT/dsh-better-sidebar-*.tgz）——先运行 pnpm build && pnpm pack"
+TARBALL="$(cd "$(dirname "$TARBALL")" && pwd)/$(basename "$TARBALL")"
+say "tarball: $TARBALL"
+
+# scratch home（每次全新，绝不触碰真实 ~/.dsh）：调用方给了 DSH_HOME_BASE
+# 时，只在其下新建本调用拥有的子目录并只删除该子目录；缺省时直接用系统
+# 临时目录。
+if [ -n "${DSH_HOME_BASE:-}" ]; then
+  SCRATCH="$(mktemp -d "$DSH_HOME_BASE/dsh-e2e-mount.XXXXXX")"
+else
+  SCRATCH="$(mktemp -d /tmp/dsh-e2e-mount.XXXXXX)"
+fi
+export DSH_HOME="$SCRATCH/home"
+WORKSPACE_DIR="$SCRATCH/workspace"
+LOG_DIR="$SCRATCH"
+WEB_LOG="$LOG_DIR/web.log"
+mkdir -p "$DSH_HOME/profiles/web" "$WORKSPACE_DIR"
+say "scratch home: ${DSH_HOME}（DSH_HOME=${DSH_HOME}）"
+
+SERVER_PID=""
+cleanup() {
+  local code=$?
+  if [ -n "$SERVER_PID" ] && kill -0 "$SERVER_PID" 2>/dev/null; then
+    kill "$SERVER_PID" 2>/dev/null || true
+    wait "$SERVER_PID" 2>/dev/null || true
+  fi
+  if [ -z "${KEEP_HOME:-}" ]; then
+    rm -rf "$SCRATCH"
+  else
+    warn "KEEP_HOME 已设置，保留 $SCRATCH"
+  fi
+  exit "$code"
+}
+trap cleanup EXIT
+
+# 步骤 1：引导 scratch profile（web 模板，镜像 dsh initProfile；先写
+# pnpm-workspace.yaml 的 allowBuilds / minimumReleaseAgeExclude，避免 pnpm 11
+# strict-dep-builds 拦截 node-pty/protobufjs 或拒绝 <24h 新版本——同 install.sh）
+PROFILE_DIR="$DSH_HOME/profiles/web"
+cat > "$PROFILE_DIR/package.json" <<EOF
+{
+  "name": "dsh-profile-web",
+  "private": true,
+  "dependencies": {},
+  "dsh": {
+    "profile": {
+      "bundles": ["@deepseek-ai/dsh-base", "@deepseek-ai/dsh-web-app"]
+    }
+  }
+}
+EOF
+printf '[]\n' > "$PROFILE_DIR/cordis.patch.yml"
+cat > "$PROFILE_DIR/pnpm-workspace.yaml" <<'EOF'
+packages:
+  - .
+
+nodeLinker: hoisted
+autoInstallPeers: false
+
+allowBuilds:
+  node-pty: true
+  protobufjs: true
+
+minimumReleaseAgeExclude:
+  - dsh-better-sidebar
+EOF
+
+# 步骤 2：官方 CLI 安装 tarball + bundle 协调（真实挂载路径）
+say "执行 dsh plugin --profile web add file:$TARBALL ..."
+$DSH_CMD plugin --profile web add "file:$TARBALL"
+
+# 步骤 3：校验挂载生效（dsh.profile.bundles 含 dsh-better-sidebar）
+if ! node -e '
+  const fs = require("fs");
+  const p = JSON.parse(fs.readFileSync(process.argv[1], "utf8"));
+  const bundles = p.dsh?.profile?.bundles ?? [];
+  process.exit(bundles.includes("dsh-better-sidebar") ? 0 : 1);
+' "$PROFILE_DIR/package.json"; then
+  warn "dsh-better-sidebar 未出现在 dsh.profile.bundles 中——挂载未注册"
+  cat "$PROFILE_DIR/package.json"
+  exit 1
+fi
+say "挂载已注册：dsh.profile.bundles 包含 dsh-better-sidebar"
+
+# 步骤 4：启动 dsh web（--port 0 = OS 分配，避免端口冲突；keyless 可起）
+say "启动 dsh web（port=${PORT}）..."
+$DSH_CMD web --port "$PORT" > "$WEB_LOG" 2>&1 &
+SERVER_PID=$!
+
+URL=""
+for _ in $(seq 1 120); do
+  if ! kill -0 "$SERVER_PID" 2>/dev/null; then
+    echo "=== dsh web 提前退出，日志尾部 ===" >&2
+    tail -30 "$WEB_LOG" >&2 || true
+    exit 1
+  fi
+  if URL="$(grep -oE 'dsh web: http://127\.0\.0\.1:[0-9]+' "$WEB_LOG" | head -1 | awk '{print $3}')" && [ -n "$URL" ]; then
+    break
+  fi
+  sleep 1
+done
+[ -n "$URL" ] || { echo "=== 120s 内未等到 dsh web 就绪，日志尾部 ===" >&2; tail -40 "$WEB_LOG" >&2 || true; exit 1; }
+say "dsh web 就绪：${URL}（pid ${SERVER_PID}）"
+
+# 步骤 5：运行无头渲染 lane
+say "运行 Playwright 无头渲染 lane..."
+DSH_E2E_URL="$URL" DSH_E2E_WORKSPACE="$WORKSPACE_DIR" \
+  pnpm exec playwright test ${GREP_FILTER:+--grep "$GREP_FILTER"}
+
+say "通过：插件挂载到真实 DSH 后无头渲染未崩溃"

scripts/install.ps1

@@ -0,0 +1,289 @@
+## =============================================================================
+# dsh-better-sidebar 一键安装脚本（官方 CLI 方式，Windows PowerShell 5.1+ / pwsh）
+#
+# 通过 DSH 官方插件命令安装 npm 包并自动挂载：
+#   dsh plugin --profile web add dsh-better-sidebar@<version>
+#
+# 包内声明了 dsh.bundle.patch（cordis.patch.yml）：CLI 的 bundle 协调会把它
+# 自动加进 profile 的 dsh.profile.bundles，下次启动即挂载——无需手动写
+# cordis.patch.yml 挂载行。符合仓库硬约束：不修改 DSH 源码，插件永远作为
+# 独立包被 profile 引用。
+#
+# 用法（任选其一）：
+#   # 默认最新版
+#   irm https://raw.githubusercontent.com/omdsh-dev/DSH-better-sidebar/main/scripts/install.ps1 | iex
+#   # 指定版本 / 装完重启
+#   & ([scriptblock]::Create((irm 'https://raw.githubusercontent.com/omdsh-dev/DSH-better-sidebar/main/scripts/install.ps1'))) -Version 0.10.2 -Restart
+#   # 本地保存后运行
+#   powershell -ExecutionPolicy Bypass -File install.ps1 -Version 0.10.2 -DryRun
+#   # 修复 node-pty 依赖（终端提示「node-pty 加载失败」时用，见 issue #140）
+#   powershell -ExecutionPolicy Bypass -File install.ps1 -Repair
+#
+# 参数：
+#   -Version    npm 版本号/范围，缺省 latest（自动解析为最新）。
+#   -Repair     修复模式：不重装插件，只确保 profile 的 pnpm-workspace.yaml
+#               放行 node-pty 构建脚本，然后重跑 pnpm install + pnpm rebuild
+#               node-pty。
+#   -Profile    目标 profile 名（缺省 web）；安装与修复模式均适用。
+#   -Restart    装完后尝试 `pm2 restart dsh-web`（无 pm2 时仅提示）。会断开当前页面会话。
+#   -DryRun     只打印将要执行的操作，不写任何文件。
+#
+# 环境变量（均可省略）：
+#   DSH_HOME    默认 %USERPROFILE%\.dsh
+#   REGISTRY    默认 https://registry.npmjs.org
+#   DSH_CMD     默认优先 PATH 上的 dsh，缺省回退 npx -y --package @deepseek-ai/dsh
+#
+# 说明：
+# - pnpm 11 的 strict-dep-builds 会拦截 node-pty/protobufjs 的构建脚本并使
+#   `dsh plugin add` 非零退出。脚本会先把这两个构建许可写进 profile 的
+#   pnpm-workspace.yaml（幂等），保证 CLI 一步成功。
+# - pnpm 11 的 minimumReleaseAge 会拒绝发布 <24h 的新版本。脚本会预写
+#   minimumReleaseAgeExclude（幂等），放行本插件，避免"重跑一次才成功"。
+# - 老版本（<0.10.2）用手动挂载行，bundle 通道激活后需移除，否则双挂载。
+#   脚本会幂等移除 better-sidebar 挂载行。
+# =============================================================================
+param(
+  [string]$Version = '',
+  [switch]$Restart,
+  [switch]$DryRun,
+  [switch]$Repair,
+  [string]$Profile = 'web'
+)
+
+$PKG = 'dsh-better-sidebar'
+$REGISTRY = if ($env:REGISTRY) { $env:REGISTRY } else { 'https://registry.npmjs.org' }
+
+# DSH_HOME：DSH_HOME 环境变量 > %USERPROFILE% > $HOME
+if ($env:DSH_HOME) {
+  $DSH_HOME = $env:DSH_HOME
+} elseif ($env:USERPROFILE) {
+  $DSH_HOME = Join-Path $env:USERPROFILE '.dsh'
+} else {
+  $DSH_HOME = Join-Path $HOME '.dsh'
+}
+$PROFILE_DIR = Join-Path $DSH_HOME "profiles\$Profile"
+$WS_YML = Join-Path $PROFILE_DIR 'pnpm-workspace.yaml'
+$PATCH_YML = Join-Path $PROFILE_DIR 'cordis.patch.yml'
+
+function Say([string]$m)  { Write-Host "[install] $m" -ForegroundColor Green }
+function Warn([string]$m) { Write-Host "[warn] $m" -ForegroundColor Yellow }
+function Die([string]$m)  { Write-Host "[error] $m" -ForegroundColor Red; exit 1 }
+
+# 解析版本 -> npm spec（"x.y.z" / "^x.y.z" / latest）
+function Resolve-Spec {
+  param([string]$Given)
+  if ([string]::IsNullOrWhiteSpace($Given) -or $Given -eq 'latest') {
+    $v = $null
+    foreach ($tool in @('npm', 'pnpm')) {
+      if (Get-Command $tool -ErrorAction SilentlyContinue) {
+        $v = (& $tool view $PKG version "--registry=$REGISTRY" 2>$null | Select-Object -Last 1)
+        if ($v) { break }
+      }
+    }
+    if ($v) { return ([string]$v).Trim() }
+    Warn '无法联网解析最新版本（npm/pnpm 查询失败），回退为 latest，由 pnpm 直接解析。'
+    Warn '若已知版本号，可显式传入：-Version 0.10.2'
+    return 'latest'
+  }
+  return $Given
+}
+
+# 组装 dsh CLI：优先 PATH 上的 dsh，缺省 npx 拉官方包
+function Get-DshCli {
+  if ($env:DSH_CMD) { return $env:DSH_CMD }
+  if (Get-Command dsh -ErrorAction SilentlyContinue) { return 'dsh' }
+  if (Get-Command npx -ErrorAction SilentlyContinue) { return 'npx' }
+  return $null
+}
+
+# 步骤 1（安装与修复共用）：预写 workspace 设置（幂等），保证 pnpm 不拦截
+# node-pty/protobufjs 构建脚本、放行本插件新版本
+function Ensure-WorkspaceSettings {
+  $wsScript = @'
+const fs = require("fs");
+const p = process.argv[2];
+let t = fs.readFileSync(p, "utf8");
+const before = t;
+t = t.replace(/^(\s*)(node-pty|protobufjs):.*$/gm, "$1$2: true");
+if (!/^\s*allowBuilds:\s*$/m.test(t)) {
+  t += "\nallowBuilds:\n  node-pty: true\n  protobufjs: true\n";
+} else {
+  for (const k of ["node-pty", "protobufjs"]) {
+    if (!new RegExp("^\\s*" + k + ":\\s*true\\s*$", "m").test(t)) {
+      t = t.replace(/^(\s*allowBuilds:\s*)$/m, "$1\n  " + k + ": true");
+    }
+  }
+}
+if (!/^\s*-\s+dsh-better-sidebar\s*$/m.test(t)) {
+  if (/^\s*minimumReleaseAgeExclude:\s*$/m.test(t)) {
+    t = t.replace(/^(\s*minimumReleaseAgeExclude:\s*)$/m, "$1\n  - dsh-better-sidebar");
+  } else {
+    t += "\nminimumReleaseAgeExclude:\n  - dsh-better-sidebar\n";
+  }
+}
+if (t !== before) fs.writeFileSync(p, t);
+console.log(t === before ? "unchanged" : "updated");
+'@
+  # PowerShell 5.1 把含内嵌双引号的多行 JS 作为参数传给 `node -e` 时，引号会被
+  # Windows 命令行解析吞掉，导致 JS 语法错误（Expected ',', got ':'）。
+  # 改用临时文件方式，兼容 PS 5.1 与 pwsh 7。
+  $wsJs = Join-Path $env:TEMP ("dshbs-ws-" + [guid]::NewGuid().ToString("N") + ".js")
+  Set-Content -LiteralPath $wsJs -Value $wsScript -Encoding UTF8
+  $wsOut = node $wsJs "$WS_YML" 2>&1
+  $wsCode = $LASTEXITCODE
+  Remove-Item -LiteralPath $wsJs -Force -ErrorAction SilentlyContinue
+  $wsResult = (($wsOut | Out-String)).Trim()
+  if ($wsCode -ne 0) { Die "处理 $WS_YML 失败（node 退出码 $wsCode）：$wsResult" }
+  if ($wsResult -eq 'updated') {
+    Say "已确保 $WS_YML：allowBuilds（node-pty/protobufjs: true）+ minimumReleaseAgeExclude（$PKG）"
+  } else {
+    Say 'workspace 设置已就绪，跳过'
+  }
+}
+
+# 前置校验
+if (-not (Get-Command node -ErrorAction SilentlyContinue)) {
+  Die '未找到 node（DSH 运行需要 Node.js >= 20），请先安装 Node.js 并加入 PATH。'
+}
+if (-not (Test-Path $PROFILE_DIR)) {
+  Die "找不到 profile 目录：$PROFILE_DIR（请先安装并运行过一次 dsh web）"
+}
+if (-not (Test-Path $WS_YML)) {
+  Die "找不到 $WS_YML（请先初始化 $Profile profile）"
+}
+
+# ── 修复模式（issue #140）：不重装插件，只修复 node-pty 依赖 ────────────
+# 终端提示「node-pty 加载失败」时运行：确保 allowBuilds 后重跑
+# pnpm install + pnpm rebuild node-pty（重放被 pnpm 11 拦截的构建脚本）。
+if ($Repair) {
+  if ($DryRun) {
+    Say "[dry-run] 修复：确保 $WS_YML 含 allowBuilds（node-pty: true）"
+    Say "[dry-run] 修复：cd $PROFILE_DIR; pnpm install; pnpm rebuild node-pty"
+    exit 0
+  }
+  Say "修复模式：重装 node-pty（profile: $Profile，$PROFILE_DIR）..."
+  Ensure-WorkspaceSettings
+  Push-Location $PROFILE_DIR
+  try {
+    pnpm install
+    if ($LASTEXITCODE -ne 0) { Die "pnpm install 失败（退出码 $LASTEXITCODE）。请确认 pnpm 在 PATH 上、网络可用，然后重试。" }
+    pnpm rebuild node-pty
+    if ($LASTEXITCODE -ne 0) { Die "pnpm rebuild node-pty 失败（退出码 $LASTEXITCODE）。请确认 pnpm 在 PATH 上，然后重试。" }
+  } finally {
+    Pop-Location
+  }
+  Say '修复完成：node-pty 已重装（与 DSH 核心保持同一版本）。请重启 DSH 后重试终端。'
+  exit 0
+}
+
+$SPEC = Resolve-Spec $Version
+$CLI = Get-DshCli
+if (-not $CLI) {
+  Die '未找到 dsh 或 npx。请先安装 DSH（并确保 Node/npm 可用），或用 DSH_CMD 指定。'
+}
+Say "目标：$CLI plugin --profile $Profile add $PKG@$SPEC（profile: $PROFILE_DIR）"
+
+if ($DryRun) {
+  Say "[dry-run] 步骤 1：确保 $WS_YML 含 allowBuilds（node-pty/protobufjs: true）与 minimumReleaseAgeExclude（$PKG）"
+  Say "[dry-run] 步骤 2：执行 $CLI plugin --profile $Profile add $PKG@$SPEC（安装 + bundle 自动注册）"
+  Say "[dry-run] 步骤 3：校验 dsh.profile.bundles 含 $PKG"
+  Say "[dry-run] 步骤 4：幂等移除 $PATCH_YML 里旧的 better-sidebar 手动挂载行（避免双挂载）"
+  if ($Restart) { Say '[dry-run] 步骤 5：pm2 restart dsh-web' } else { Say '[dry-run] 步骤 5：提示用户手动重启 DSH' }
+  exit 0
+}
+
+# 步骤 1：预写 workspace 设置（幂等），保证 pnpm 不拦截构建、放行本插件新版本
+Ensure-WorkspaceSettings
+
+# 步骤 2：官方 CLI 安装 + bundle 自动注册（含挂载）
+if ($CLI -eq 'dsh') {
+  $cliArgs = @('plugin', '--profile', $Profile, 'add', "$PKG@$SPEC")
+} else {
+  $cliArgs = @('-y', '--package', '@deepseek-ai/dsh', 'dsh', 'plugin', '--profile', $Profile, 'add', "$PKG@$SPEC")
+}
+Say "执行 $CLI plugin --profile $Profile add $PKG@$SPEC ..."
+$addOut = & $CLI @cliArgs 2>&1
+$addCode = $LASTEXITCODE
+$addOut | ForEach-Object { $_ }
+if ($addCode -ne 0) {
+  Warn 'dsh plugin add 失败。已预写 allowBuilds 与 minimumReleaseAgeExclude，仍失败的可能原因：'
+  Warn '  - 网络/登录问题：npm registry 不可达或需要登录。'
+  Warn "  - 依赖安装冲突：可手动重试 cd $PROFILE_DIR; pnpm install。"
+  exit 1
+}
+
+# 步骤 3：校验 bundle 已注册（挂载生效的判据）
+$pkgJson = Get-Content -Raw (Join-Path $PROFILE_DIR 'package.json') | ConvertFrom-Json
+$bundles = $pkgJson.dsh.profile.bundles
+if ($bundles -notcontains $PKG) {
+  Warn 'dsh-better-sidebar 未出现在 dsh.profile.bundles 中——挂载未注册。'
+  Warn "若上面的 pnpm 输出提示 ignored build scripts，请确认 $WS_YML 的 allowBuilds 后重跑本脚本。"
+  exit 1
+}
+Say "bundle 已注册：dsh.profile.bundles 包含 $PKG（下次启动自动挂载）"
+
+# 步骤 4：幂等移除旧的 manual 挂载行（避免与 bundle 双挂载）
+$mountScript = @'
+const fs = require("fs");
+const p = process.argv[2];
+const lines = fs.readFileSync(p, "utf8").split("\n");
+const out = [];
+let i = 0;
+let removed = false;
+while (i < lines.length) {
+  const line = lines[i];
+  if (/^[ \t]*- insert:\s*$/.test(line)) {
+    const block = [line];
+    let j = i + 1;
+    while (j < lines.length && lines[j].trim() !== "" && !/^-\s/.test(lines[j])) {
+      block.push(lines[j]);
+      j++;
+    }
+    if (block.some((l) => /id:\s*better-sidebar\b/.test(l))) {
+      while (out.length && /^[ \t]*#/.test(out[out.length - 1])) out.pop();
+      i = j;
+      removed = true;
+      continue;
+    }
+  }
+  out.push(line);
+  i++;
+}
+if (!removed) {
+  console.log("none");
+} else {
+  const t = out.join("\n").replace(/\n{3,}/g, "\n\n");
+  fs.writeFileSync(p, t);
+  console.log("removed");
+}
+'@
+$mountJs = Join-Path $env:TEMP ("dshbs-mount-" + [guid]::NewGuid().ToString("N") + ".js")
+Set-Content -LiteralPath $mountJs -Value $mountScript -Encoding UTF8
+$mountOut = node $mountJs "$PATCH_YML" 2>&1
+$mountCode = $LASTEXITCODE
+Remove-Item -LiteralPath $mountJs -Force -ErrorAction SilentlyContinue
+$mountResult = (($mountOut | Out-String)).Trim()
+if ($mountCode -ne 0) { Die "处理 $PATCH_YML 失败（node 退出码 $mountCode）：$mountResult" }
+if ($mountResult -eq 'removed') {
+  Say "已从 $PATCH_YML 移除旧的 better-sidebar 手动挂载行（bundle 通道接管挂载）"
+} else {
+  Say '无旧手动挂载行，跳过'
+}
+
+Say "安装完成：$PKG@$SPEC"
+
+# 步骤 5：重启提示
+if ($Restart) {
+  if (Get-Command pm2 -ErrorAction SilentlyContinue) {
+    Say '重启 dsh-web（pm2）...'
+    pm2 restart dsh-web
+    if ($LASTEXITCODE -ne 0) { Warn 'pm2 restart 失败，请手动重启 DSH' }
+  } else {
+    Warn '未找到 pm2，请手动重启 DSH（如：pm2 restart dsh-web 或 dsh web）'
+  }
+} else {
+  Say '下一步：重启 DSH 并硬刷新（Ctrl+Shift+R / Cmd+Shift+R）使新副本生效。'
+  if (Get-Command pm2 -ErrorAction SilentlyContinue) {
+    Say '本机可用：pm2 restart dsh-web（会短暂断开当前页面会话）'
+  }
+}

scripts/install.sh

@@ -0,0 +1,287 @@
+#!/usr/bin/env bash
+# =============================================================================
+# dsh-better-sidebar 一键安装脚本（官方 CLI 方式，macOS / Linux / Windows Git Bash）
+#
+# 通过 DSH 官方插件命令安装 npm 包并自动挂载：
+#   dsh plugin --profile web add dsh-better-sidebar@<version>
+#
+# 包内声明了 dsh.bundle.patch（cordis.patch.yml）：CLI 的 bundle 协调会把它
+# 自动加进 profile 的 dsh.profile.bundles，下次启动即挂载——无需手动写
+# cordis.patch.yml 挂载行。符合仓库硬约束：不修改 DSH 源码，插件永远作为
+# 独立包被 profile 引用。
+#
+# 用法：
+#   bash scripts/install.sh [版本] [--restart] [--dry-run]
+#   bash scripts/install.sh --repair [--profile <名>] [--dry-run]
+#
+#   版本        npm 版本号/范围，缺省为 latest（自动解析为 ^<最新>）。
+#               示例：0.10.2、^0.10.2、~0.10.2、latest
+#   --repair    修复模式：不重装插件，只确保 profile 的 pnpm-workspace.yaml
+#               放行 node-pty 构建脚本，然后重跑 pnpm install + pnpm rebuild
+#               node-pty（终端提示「node-pty 加载失败」时用它，见 issue #140）。
+#   --profile   目标 profile 名（缺省 web）；安装与修复模式均适用。
+#   --restart   装完后尝试 `pm2 restart dsh-web`（无 pm2 时仅打印提示）。
+#               注意：重启会断开当前 DSH 页面会话，默认不自动重启。
+#   --dry-run   只打印将要执行的操作，不写任何文件。
+#   -h/--help   打印本帮助。
+#
+# 环境（均可省略，脚本会自动探测）：
+#   DSH_HOME    默认 ~/.dsh（Windows Git Bash 下回退 $USERPROFILE/.dsh）
+#   REGISTRY    默认 https://registry.npmjs.org（发布源；装依赖仍走 pnpm 配置）
+#   DSH_CMD     默认优先用 PATH 上的 `dsh`，缺省回退 npx -y --package @deepseek-ai/dsh
+#
+# 说明：
+# - pnpm 11 的 strict-dep-builds 会拦截 node-pty/protobufjs 的构建脚本并使
+#   `dsh plugin add` 非零退出（bundle 协调因此被跳过）。脚本会先把这两个
+#   构建许可写进 profile 的 pnpm-workspace.yaml（幂等），保证 CLI 一步成功。
+# - pnpm 11 的 minimumReleaseAge 会拒绝发布 <24h 的新版本。脚本会预写
+#   minimumReleaseAgeExclude（幂等），放行本插件，避免"重跑一次才成功"。
+# - 老版本（<0.10.2）用手动挂载行，bundle 通道激活后需移除，否则双挂载
+#   （Node 半挂两次、页面两个侧边栏）。脚本会幂等移除 better-sidebar 挂载行。
+# - 回滚：dsh plugin --profile web remove dsh-better-sidebar，或把 profile 依赖
+#   改回 "dsh-better-sidebar": "link:<路径>" 再 pnpm install。
+# =============================================================================
+set -euo pipefail
+
+# 帮助请求优先处理
+for arg in "$@"; do
+  if [ "$arg" = "-h" ] || [ "$arg" = "--help" ]; then
+    cat <<'EOF'
+dsh-better-sidebar 一键安装 / 依赖修复脚本
+
+用法：
+  bash scripts/install.sh [版本] [--restart] [--dry-run] [--profile <名>]
+  bash scripts/install.sh --repair [--profile <名>] [--dry-run]
+
+  版本         npm 版本号/范围，缺省 latest（自动解析为最新）。示例：0.10.2、^0.10.2、latest
+  --repair     修复模式：确保 profile 放行 node-pty 构建脚本并重装 node-pty（终端提示依赖加载失败时用）
+  --profile    目标 profile 名（缺省 web）
+  --restart    装完后尝试 `pm2 restart dsh-web`（无 pm2 时仅提示）
+  --dry-run    只打印将要执行的操作，不写任何文件
+
+环境变量（可省略）：DSH_HOME（默认 ~/.dsh）、REGISTRY（npm 源）、DSH_CMD（dsh 命令）
+EOF
+    exit 0
+  fi
+done
+
+DSH_HOME="${DSH_HOME:-${HOME:-${USERPROFILE:-}}/.dsh}"
+REGISTRY="${REGISTRY:-https://registry.npmjs.org}"
+PKG="dsh-better-sidebar"
+DSH_CMD="${DSH_CMD:-dsh}"
+
+RESTART=false
+DRY_RUN=false
+REPAIR=false
+VERSION_SPEC=""
+PROFILE_NAME="web"
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --restart) RESTART=true ;;
+    --dry-run) DRY_RUN=true ;;
+    --repair) REPAIR=true ;;
+    --profile)
+      if [ $# -lt 2 ]; then echo "--profile 需要一个 profile 名（如 web）" >&2; exit 2; fi
+      PROFILE_NAME="$2"; shift ;;
+    -h|--help) : ;;  # 已在上面处理
+    -*) echo "未知参数: ${1}（用 -h 查看用法）" >&2; exit 2 ;;
+    *) VERSION_SPEC="$1" ;;
+  esac
+  shift
+done
+
+PROFILE_DIR="$DSH_HOME/profiles/$PROFILE_NAME"
+WS_YML="$PROFILE_DIR/pnpm-workspace.yaml"
+PATCH_YML="$PROFILE_DIR/cordis.patch.yml"
+
+say()  { printf '\033[32m[install]\033[0m %s\n' "$*"; }
+warn() { printf '\033[33m[warn]\033[0m %s\n' "$*" >&2; }
+die()  { printf '\033[31m[error]\033[0m %s\n' "$*" >&2; exit 1; }
+
+# 步骤 1（安装与修复共用）：预写 workspace 设置（幂等），保证 pnpm 不拦截
+# node-pty/protobufjs 构建脚本、放行本插件新版本
+ensure_workspace_settings() {
+  WS_RESULT="$(node -e '
+const fs = require("fs");
+const p = process.argv[1];
+let t = fs.readFileSync(p, "utf8");
+const before = t;
+// allowBuilds：把 node-pty/protobufjs 归位为 true
+t = t.replace(/^(\s*)(node-pty|protobufjs):.*$/gm, "$1$2: true");
+if (!/^\s*allowBuilds:\s*$/m.test(t)) {
+  t += "\nallowBuilds:\n  node-pty: true\n  protobufjs: true\n";
+} else {
+  for (const k of ["node-pty", "protobufjs"]) {
+    if (!new RegExp("^\\s*" + k + ":\\s*true\\s*$", "m").test(t)) {
+      t = t.replace(/^(\s*allowBuilds:\s*)$/m, "$1\n  " + k + ": true");
+    }
+  }
+}
+// minimumReleaseAgeExclude：放行本插件（版本无关），避免 <24h 新版本被拒
+if (!/^\s*-\s+dsh-better-sidebar\s*$/m.test(t)) {
+  if (/^\s*minimumReleaseAgeExclude:\s*$/m.test(t)) {
+    t = t.replace(/^(\s*minimumReleaseAgeExclude:\s*)$/m, "$1\n  - dsh-better-sidebar");
+  } else {
+    t += "\nminimumReleaseAgeExclude:\n  - dsh-better-sidebar\n";
+  }
+}
+if (t !== before) fs.writeFileSync(p, t);
+console.log(t === before ? "unchanged" : "updated");
+' "$WS_YML")"
+  [ "$WS_RESULT" = "updated" ] \
+    && say "已确保 ${WS_YML}：allowBuilds（node-pty/protobufjs: true）+ minimumReleaseAgeExclude（${PKG}）" \
+    || say "workspace 设置已就绪，跳过"
+}
+
+# 解析用户给的版本 -> CLI 要用的 npm spec（"x.y.z" / "^x.y.z" / latest）
+resolve_spec() {
+  local given="${1:-latest}"
+  case "$given" in
+    latest)
+      local v=""
+      if command -v npm >/dev/null 2>&1; then
+        v="$(npm view "$PKG" version --registry="$REGISTRY" 2>/dev/null)" || v=""
+      fi
+      if [ -z "$v" ] && command -v pnpm >/dev/null 2>&1; then
+        v="$(pnpm view "$PKG" version --registry="$REGISTRY" 2>/dev/null)" || v=""
+      fi
+      if [ -n "$v" ]; then
+        printf '%s' "$v"
+      else
+        warn "无法联网解析最新版本（npm/pnpm 查询失败），回退为 latest，由 pnpm 直接解析。"
+        warn "若已知版本号，可显式传入：bash scripts/install.sh 0.10.2"
+        printf 'latest'
+      fi
+      ;;
+    *) printf '%s' "$given" ;;
+  esac
+}
+
+# 组装 dsh CLI 调用：优先 PATH 上的 dsh，缺省 npx 拉官方包
+dsh_cli() {
+  if command -v "$DSH_CMD" >/dev/null 2>&1; then
+    printf '%s' "$DSH_CMD"
+  elif command -v npx >/dev/null 2>&1; then
+    printf 'npx -y --package @deepseek-ai/dsh dsh'
+  else
+    die "未找到 dsh 或 npx。请先安装 DSH（并确保 Node/npm 可用），或用 DSH_CMD 指定 dsh 路径。"
+  fi
+}
+
+# 前置校验
+command -v node >/dev/null 2>&1 || die "未找到 node（DSH 运行需要 Node.js ≥ 20），请先安装 Node.js 并加入 PATH。"
+
+[ -d "$PROFILE_DIR" ] || die "找不到 profile 目录：${PROFILE_DIR}（请先安装并运行过一次 dsh web）"
+[ -f "$WS_YML" ]      || die "找不到 ${WS_YML}（请先初始化 ${PROFILE_NAME} profile）"
+
+# ── 修复模式（issue #140）：不重装插件，只修复 node-pty 依赖 ────────────
+# 终端提示「node-pty 加载失败」时运行：确保 allowBuilds 后重跑
+# pnpm install + pnpm rebuild node-pty（重放被 pnpm 11 拦截的构建脚本）。
+if [ "$REPAIR" = true ]; then
+  if [ "$DRY_RUN" = true ]; then
+    say "[dry-run] 修复：确保 $WS_YML 含 allowBuilds（node-pty: true）"
+    say "[dry-run] 修复：cd $PROFILE_DIR && pnpm install && pnpm rebuild node-pty"
+    exit 0
+  fi
+  say "修复模式：重装 node-pty（profile: ${PROFILE_NAME}，${PROFILE_DIR}）..."
+  ensure_workspace_settings
+  if ! (cd "$PROFILE_DIR" && pnpm install && pnpm rebuild node-pty); then
+    die "修复失败：pnpm install / pnpm rebuild node-pty 非零退出。请确认 pnpm 在 PATH 上、网络可用，然后重试。"
+  fi
+  say "修复完成：node-pty 已重装（与 DSH 核心保持同一版本）。请重启 DSH 后重试终端。"
+  exit 0
+fi
+
+SPEC="$(resolve_spec "$VERSION_SPEC")"
+CLI="$(dsh_cli)"
+say "目标：$CLI plugin --profile $PROFILE_NAME add $PKG@${SPEC}（profile: ${PROFILE_DIR}）"
+
+if [ "$DRY_RUN" = true ]; then
+  say "[dry-run] 步骤 1：确保 $WS_YML 含 allowBuilds（node-pty/protobufjs: true）与 minimumReleaseAgeExclude（${PKG}）"
+  say "[dry-run] 步骤 2：执行 $CLI plugin --profile $PROFILE_NAME add $PKG@${SPEC}（安装 + bundle 自动注册）"
+  say "[dry-run] 步骤 3：校验 dsh.profile.bundles 含 $PKG"
+  say "[dry-run] 步骤 4：幂等移除 $PATCH_YML 里旧的 better-sidebar 手动挂载行（避免双挂载）"
+  if [ "$RESTART" = true ]; then say "[dry-run] 步骤 5：pm2 restart dsh-web"; else say "[dry-run] 步骤 5：提示用户手动重启 DSH"; fi
+  exit 0
+fi
+
+# 步骤 1：预写 workspace 设置（幂等），保证 pnpm 不拦截构建、不放行旧版本策略
+ensure_workspace_settings
+
+# 步骤 2：官方 CLI 安装 + bundle 自动注册（含挂载）
+say "执行 $CLI plugin --profile $PROFILE_NAME add $PKG@$SPEC ..."
+if ! $CLI plugin --profile "$PROFILE_NAME" add "$PKG@$SPEC" 2>&1 | tail -n +1; then
+  warn "dsh plugin add 失败。已预写 allowBuilds 与 minimumReleaseAgeExclude，仍失败的可能原因："
+  warn "  - 网络/登录问题：npm registry 不可达或需要登录。"
+  warn "  - 依赖安装冲突：可手动重试 cd $PROFILE_DIR && pnpm install。"
+  exit 1
+fi
+
+# 校验 bundle 已注册（挂载生效的判据）
+if ! node -e '
+  const fs = require("fs");
+  const p = JSON.parse(fs.readFileSync(process.argv[1], "utf8"));
+  const bundles = p.dsh?.profile?.bundles ?? [];
+  process.exit(bundles.includes(process.argv[2]) ? 0 : 1);
+' "$PROFILE_DIR/package.json" "$PKG"; then
+  warn "dsh-better-sidebar 未出现在 dsh.profile.bundles 中——挂载未注册。"
+  warn "若上面的 pnpm 输出提示 ignored build scripts，请确认 $WS_YML 的 allowBuilds 后重跑本脚本。"
+  exit 1
+fi
+say "bundle 已注册：dsh.profile.bundles 包含 ${PKG}（下次启动自动挂载）"
+
+# 步骤 3：幂等移除旧的 manual 挂载行（避免与 bundle 双挂载）
+MOUNT_RESULT="$(node -e '
+const fs = require("fs");
+const p = process.argv[1];
+const lines = fs.readFileSync(p, "utf8").split("\n");
+const out = [];
+let i = 0;
+let removed = false;
+while (i < lines.length) {
+  const line = lines[i];
+  if (/^[ \t]*- insert:\s*$/.test(line)) {
+    const block = [line];
+    let j = i + 1;
+    while (j < lines.length && lines[j].trim() !== "" && !/^-\s/.test(lines[j])) {
+      block.push(lines[j]);
+      j++;
+    }
+    if (block.some((l) => /id:\s*better-sidebar\b/.test(l))) {
+      while (out.length && /^[ \t]*#/.test(out[out.length - 1])) out.pop();
+      i = j;
+      removed = true;
+      continue;
+    }
+  }
+  out.push(line);
+  i++;
+}
+if (!removed) {
+  console.log("none");
+} else {
+  const t = out.join("\n").replace(/\n{3,}/g, "\n\n");
+  fs.writeFileSync(p, t);
+  console.log("removed");
+}
+' "$PATCH_YML")"
+[ "$MOUNT_RESULT" = "removed" ] \
+  && say "已从 $PATCH_YML 移除旧的 better-sidebar 手动挂载行（bundle 通道接管挂载）" \
+  || say "无旧手动挂载行，跳过"
+
+say "安装完成：$PKG@$SPEC"
+
+# 步骤 4：重启提示
+if [ "$RESTART" = true ]; then
+  if command -v pm2 >/dev/null 2>&1; then
+    say "重启 dsh-web（pm2）..."
+    pm2 restart dsh-web || warn "pm2 restart 失败，请手动重启 DSH"
+  else
+    warn "未找到 pm2，请手动重启 DSH（如：pm2 restart dsh-web 或 dsh web）"
+  fi
+else
+  say "下一步：重启 DSH 并硬刷新（Cmd/Ctrl+Shift+R）使新副本生效。"
+  if command -v pm2 >/dev/null 2>&1; then
+    say "本机可用：pm2 restart dsh-web（会短暂断开当前页面会话）"
+  fi
+fi

scripts/package-registry.mjs

@@ -29,6 +29,12 @@ const files = [
   'lib/invariant.js',
   'lib/client-registry.js',
   'lib/client-registry.js.map',
+  // Lazy chunks: the client fetches these from the host's /sidebar/bundle
+  // route on first use (see src/client/chunk-loader.ts / src/bundle-route.ts).
+  'lib/client-terminal.js',
+  'lib/client-terminal.js.map',
+  'lib/client-editor.js',
+  'lib/client-editor.js.map',
   'README.md',
   'LICENSE',
 ]

src/agent-pty.ts

@@ -12,8 +12,9 @@
  * Both registries share the same shell resolver and spawn-helper fix.
  */
 import { randomUUID } from 'node:crypto'
-import * as nodePty from 'node-pty'
-import { ensureSpawnHelper } from './pty-manager.ts'
+import type { IPty } from 'node-pty'
+import { ensureSpawnHelper, shellSpawnArgs } from './pty-manager.ts'
+import { loadRequiredNodePty, type NodePtyModule } from './pty-deps.ts'
 import { SidebarError } from './wire.ts'
 
 /** Per-agent-terminal transcript bound (bytes kept for replay and reads). */
@@ -106,7 +107,7 @@ export interface AgentTerminalHandle {
   /** The working directory the process was spawned with. */
   cwd: string
   /** The live pty process. */
-  pty: nodePty.IPty
+  pty: IPty
   /** Output accumulated since spawn (bounded; head dropped when over the limit). */
   transcript: string
   /** Whether the top-level process exited (transcript stays replayable). */
@@ -189,7 +190,12 @@ export class AgentPtyRegistry {
   private readonly sessions = new Map<string, AgentTerminalHandle>()
   private readonly changeListeners = new Set<() => void>()
 
-  constructor(private readonly shell: string) {
+  constructor(
+    private readonly shell: string,
+    private readonly shellArgs: string[] = [],
+    /** The loaded node-pty module (injected so a broken install degrades instead of crashing the plugin). */
+    private readonly nodePty: NodePtyModule = loadRequiredNodePty(),
+  ) {
     ensureSpawnHelper()
   }
 
@@ -208,10 +214,12 @@ export class AgentPtyRegistry {
     cwd: string,
     cols = 80,
     rows = 24,
+    shell?: string,
+    shellArgs?: string[],
   ): string {
     const uuid = randomUUID()
     const dims = clampDims(cols, rows)
-    const pty = nodePty.spawn(this.shell, [], {
+    const pty = this.nodePty.spawn(shell ?? this.shell, shellSpawnArgs(shellArgs ?? this.shellArgs), {
       name: 'xterm-256color',
       cols: dims.cols,
       rows: dims.rows,

src/bundle-route.ts

@@ -0,0 +1,129 @@
+/**
+ * Lazy chunk route: serves the client bundle's chunk scripts
+ * (/sidebar/bundle/<name>.js). The official /plugins/<id>/client.js route
+ * cannot serve arbitrary file names, so the plugin serves its own split
+ * bundles (lib/client-<name>.js) here; the client injects the script on
+ * first use of the feature that needs it (see src/client/chunk-loader.ts).
+ *
+ * Caching contract: every response carries `cache-control: no-cache` plus an
+ * ETag (content hash, memoized per file by mtime/size) and honors
+ * If-None-Match — the browser revalidates each fetch, but a 304 avoids
+ * re-downloading multi-MB chunks that did not change (page refresh, HMR
+ * re-activation). Same browser-trust fence as every other /sidebar route;
+ * only allowlisted chunk names are servable (no path traversal).
+ */
+import { createHash } from 'node:crypto'
+import { stat, readFile } from 'node:fs/promises'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Context, SidebarHttpRequest, SidebarHttpResponse } from './context-types.ts'
+
+/** The chunk names the client may request (mirror of src/client/chunk-loader.ts). */
+export const CHUNK_NAMES = ['terminal', 'editor', 'mermaid'] as const
+export type ChunkName = (typeof CHUNK_NAMES)[number]
+
+/** Directory of this host-half module (lib/ — the chunk scripts live next to it). */
+const LIB_DIR = dirname(fileURLToPath(import.meta.url))
+
+/** sha1 content hash shortened to 12 hex chars (same shape as the client-modules rev). */
+function shortHash(input: string | Buffer): string {
+  return createHash('sha1').update(input).digest('hex').slice(0, 12)
+}
+
+interface ChunkEtag {
+  mtimeMs: number
+  size: number
+  etag: string
+}
+
+/** ETag memo: recompute the content hash only when the file's stat changed. */
+const etags = new Map<string, ChunkEtag>()
+
+/**
+ * The chunk file's ETag (quoted hash), or undefined when the file is
+ * missing. Hash is recomputed only when mtime/size changed (hashing a
+ * multi-MB chunk per request is wasteful).
+ */
+async function etagOf(name: ChunkName, chunkDir: string): Promise<string | undefined> {
+  const path = join(chunkDir, `client-${name}.js`)
+  const key = `${chunkDir}:${name}`
+  try {
+    const info = await stat(path)
+    const memo = etags.get(key)
+    if (memo !== undefined && memo.mtimeMs === info.mtimeMs && memo.size === info.size) {
+      return memo.etag
+    }
+    const etag = `"${shortHash(await readFile(path))}"`
+    etags.set(key, { mtimeMs: info.mtimeMs, size: info.size, etag })
+    return etag
+  } catch {
+    return undefined
+  }
+}
+
+/**
+ * Build the /sidebar/bundle route handler. `fence` is the shared browser-
+ * trust check every /sidebar route applies; `chunkDir` is the directory the
+ * chunk scripts live in (overridable for tests).
+ */
+export function createBundleRouteHandler(
+  fence: (req: SidebarHttpRequest) => boolean,
+  chunkDir: string = LIB_DIR,
+): (req: SidebarHttpRequest, res: SidebarHttpResponse) => Promise<void> {
+  return async (req, res): Promise<void> => {
+    if (!fence(req)) {
+      res.writeHead(403)
+      res.end('forbidden')
+      return
+    }
+    if (req.method !== 'GET' && req.method !== 'HEAD') {
+      res.writeHead(405)
+      res.end()
+      return
+    }
+    const pathname = new URL(req.url ?? '/', 'http://dsh.internal').pathname
+    const match = /^\/sidebar\/bundle\/([a-z0-9-]+)\.js$/.exec(pathname)
+    const name = match?.[1] as ChunkName | undefined
+    if (name === undefined || !(CHUNK_NAMES as readonly string[]).includes(name)) {
+      res.writeHead(404)
+      res.end('not found')
+      return
+    }
+    const etag = await etagOf(name, chunkDir)
+    if (etag === undefined) {
+      // Registered name but unreadable (bundle not built yet): loud 404.
+      res.writeHead(404)
+      res.end('not found')
+      return
+    }
+    if (req.headers['if-none-match'] === etag) {
+      // Revalidation hit: unchanged chunk, no body — avoids re-downloading
+      // multi-MB scripts on page refresh / HMR re-activation.
+      res.writeHead(304, { 'cache-control': 'no-cache', etag })
+      res.end()
+      return
+    }
+    try {
+      const body = await readFile(join(chunkDir, `client-${name}.js`))
+      res.writeHead(200, {
+        'content-type': 'text/javascript; charset=utf-8',
+        'cache-control': 'no-cache',
+        etag,
+      })
+      res.end(body)
+    } catch {
+      // Read raced a delete/rebuild between the stat and the read.
+      res.writeHead(404)
+      res.end('not found')
+    }
+  }
+}
+
+/** Register the /sidebar/bundle route (disposed with the fiber). */
+export function registerBundleRoute(ctx: Context, fence: (req: SidebarHttpRequest) => boolean): () => void {
+  return ctx.webServer.register({
+    kind: 'prefix',
+    path: '/sidebar/bundle',
+    handler: createBundleRouteHandler(fence),
+  })
+}

src/client/DiffTab.tsx

@@ -90,7 +90,7 @@ export function DiffTab(props: { sessionId: string; cwd: string | undefined; dif
           title={t('refresh')}
           onClick={refresh}
         >
-          <IconRefreshOutline16 />
+          <IconRefreshOutline16 size={14} />
         </button>
       </div>
       {loading && <div className={css.gitPlaceholder}>{t('loading')}</div>}

src/client/EditorHost.tsx

@@ -1,22 +1,43 @@
 /**
- * The editor tab host: resolves a file's previewer through the sidebar
- * registry (`matchFileViewer`), fetches bytes per the matched viewer's
- * fetch strategy, and renders its component — or the shared download pane
- * when nothing can render the file. The header shows the file title; the
- * editable code/markdown viewers render their own toolbar below it.
+ * The editor tab host: the single FILES WINDOW. It resolves a file's
+ * previewer through the sidebar registry (`matchFileViewer`), fetches bytes
+ * per the matched viewer's fetch strategy, and renders its component — or
+ * the shared download pane when nothing can render the file. A tab without
+ * a path (the seeded "Files" home) renders an empty-state hint instead of
+ * the viewer loading flow; that path-less window IS the file explorer.
+ *
+ * The chrome depends on the `editorExplorer` mode (read reactively so
+ * toggling it re-renders without a reload):
+ * - merged (in-place): tree click / path-input Enter switch the CURRENT
+ *   tab in place (updateTab rewrites path/title; the tab keeps its id and
+ *   meta, so treeOpen/treeWidth survive the switch);
+ * - split: they open through `openSidebarFile` (a per-path dedupe tab),
+ *   and a PATH-LESS window is the standalone explorer — it renders ONLY
+ *   the tree panel (search + FileTree, full-window), no editor chrome.
+ *   Editor tabs (with a path) keep the full chrome in both modes.
+ * The tree's context menu offers the explicit escapes in both modes: open
+ * in a new tab (per-path dedupe) or to the side (a fresh tab in a fresh
+ * rightward split of the current pane).
  *
  * The strategy dispatch is pure (planFirstMatch / planFsReadOutcome in
  * editor-load.ts); this component only wires it to the host APIs.
  */
-import { useEffect, useState } from 'react'
+import { useCallback, useEffect, useRef, useState, useSyncExternalStore } from 'react'
 import { createElement } from 'react'
+import clsx from 'clsx'
+import { IconCheckOutline16, IconFolderOpen16 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { Context } from '../context-types.ts'
 import { api, mediaUrl, type SessionScope } from './api.ts'
 import { BinaryDownload } from './binary-download.tsx'
 import { planFirstMatch, planFsReadOutcome, type EditorLoadAction } from './editor-load.ts'
+import { baseName } from './FileTree.tsx'
+import { openSidebarFile } from './intercept.tsx'
+import { TreePanel } from './TreePanel.tsx'
 import { t } from './locales.ts'
-import type { FileViewerDescriptor } from './service.ts'
-import type { SidebarStore } from './state.ts'
+import { relativeTo } from './paths.ts'
+import { resolveSidebarPath } from './produced-files.ts'
+import type { EditorToolbarControls, EditorToolbarState, FileViewerDescriptor } from './service.ts'
+import { firstLeaf, insertLeafAt, leafWithTab, mintTabId, treeOf, type SidebarStore, type SidebarTab } from './state.ts'
 import css from './sidebar.module.css'
 
 type EditorLoad =
@@ -25,12 +46,160 @@ type EditorLoad =
   | { status: 'ready'; viewer: FileViewerDescriptor; content?: string; truncated?: boolean; mediaUrl?: string; customData?: unknown }
   | { status: 'binary' }
 
-export function EditorHost(props: { ctx: Context; store: SidebarStore; scope: SessionScope; path: string; title: string }) {
-  const { ctx, store, scope, path, title } = props
+/** The docked tree panel's width bounds (drag-resize clamps into them). */
+const TREE_WIDTH_DEFAULT = 240
+const TREE_WIDTH_MIN = 160
+const TREE_WIDTH_MAX = 480
+
+/** The tab's persisted meta object (a malformed meta reads as empty). */
+function metaOf(tab: SidebarTab): Record<string, unknown> {
+  return tab.meta !== null && typeof tab.meta === 'object' && !Array.isArray(tab.meta)
+    ? tab.meta as Record<string, unknown>
+    : {}
+}
+
+/** Read the persisted tree-panel flag of one editor tab: an explicit
+ *  boolean meta wins; otherwise path-less tabs (the seeded home) default
+ *  open and file tabs default closed. */
+function treeOpenOf(tab: SidebarTab): boolean {
+  const treeOpen = metaOf(tab).treeOpen
+  return typeof treeOpen === 'boolean' ? treeOpen : (tab.path === undefined || tab.path === '')
+}
+
+/** Read the persisted tree-panel width (clamped; default 240). */
+function treeWidthOf(tab: SidebarTab): number {
+  const width = metaOf(tab).treeWidth
+  return typeof width === 'number' && Number.isFinite(width)
+    ? Math.min(TREE_WIDTH_MAX, Math.max(TREE_WIDTH_MIN, Math.round(width)))
+    : TREE_WIDTH_DEFAULT
+}
+
+/** Merge a patch into the tab's persisted meta (rides the layout). */
+function patchMeta(ctx: Context, tab: SidebarTab, patch: Record<string, unknown>): void {
+  ctx.betterSidebar?.updateTab(tab.id, { meta: { ...metaOf(tab), ...patch } })
+}
+
+/** Clamp one dock width into the contract range. */
+function clampTreeWidth(value: number): number {
+  return Math.min(TREE_WIDTH_MAX, Math.max(TREE_WIDTH_MIN, Math.round(value)))
+}
+
+export function EditorHost(props: {
+  ctx: Context
+  store: SidebarStore
+  scope: SessionScope
+  tab: SidebarTab
+  expanded: string[]
+  onToggleDir: (path: string) => void
+  onReferenceFile: (path: string) => void
+}) {
+  const { ctx, store, scope, tab, expanded, onToggleDir, onReferenceFile } = props
+  const path = tab.path ?? ''
+  const title = tab.title
   const [load, setLoad] = useState<EditorLoad>({ status: 'loading' })
 
+  // Reactive prefs read: flipping editorExplorer re-renders this tab with no
+  // reload. The snapshot is the bare boolean so unrelated store churn never
+  // re-renders the editor.
+  const inPlace = useSyncExternalStore(
+    useCallback((callback: () => void) => store.subscribe(callback), [store]),
+    useCallback(() => store.getSnapshot().prefs.editorExplorer, [store]),
+  )
+  // A path-less tab shows the empty-state hint in merged mode — and in split
+  // mode it is the standalone explorer (tree-only, see the render below).
+  const showEmpty = path === ''
+  const treeOnly = showEmpty && !inPlace
+
+  /**
+   * Open a file from THIS window (tree click / search row / path input):
+   * merged mode switches this tab in place (stable id, meta survives);
+   * split mode opens a per-path dedupe tab through openSidebarFile.
+   */
+  const openFile = (absolute: string): void => {
+    if (inPlace) {
+      ctx.betterSidebar?.updateTab(tab.id, { path: absolute, title: baseName(absolute) })
+    } else {
+      openSidebarFile(ctx, store, scope.sessionId, absolute)
+    }
+  }
+
+  /** The context menu's explicit "new tab" escape (per-path dedupe). */
+  const openFileNewTab = (absolute: string): void => {
+    openSidebarFile(ctx, store, scope.sessionId, absolute)
+  }
+
+  /**
+   * The context menu's "open to the side": a fresh editor tab (uid id — the
+   * `'editor:' + path` convention would clash with the id safety net on a
+   * second side-open of the same file) in a rightward split of THIS pane.
+   */
+  const openFileSide = (absolute: string): void => {
+    store.reduce((state) => {
+      const key = treeOf(state, tab.id)
+      const pane = leafWithTab(state[key], tab.id) ?? firstLeaf(state[key])
+      const fresh: SidebarTab = {
+        id: mintTabId(),
+        type: 'editor',
+        title: baseName(absolute),
+        path: absolute,
+        meta: { treeOpen: false },
+      }
+      const { node, leafId } = insertLeafAt(state[key], pane.id, 'row', fresh, false)
+      return { ...state, [key]: node, activePane: leafId }
+    })
+  }
+
+  // The viewer's toolbar, hoisted into THIS header: the text editor reports
+  // its state and registers its commands (both null/absent for viewers
+  // without a toolbar — image, pdf, binary download).
+  const [toolbar, setToolbar] = useState<EditorToolbarState | null>(null)
+  const controlsRef = useRef<EditorToolbarControls | null>(null)
+  const onToolbarState = useCallback((next: EditorToolbarState) => {
+    setToolbar(prev => prev !== null && JSON.stringify(prev) === JSON.stringify(next) ? prev : next)
+  }, [])
+  const onToolbarControls = useCallback((controls: EditorToolbarControls | null) => {
+    controlsRef.current = controls
+  }, [])
+
+  // The docked panel's drag-resize: pointer capture on the handle itself
+  // (no window listeners — the captured pointer keeps tracking even off the
+  // handle). Local width while dragging, persisted into meta.treeWidth on
+  // release. The panel docks right, so dragging LEFT widens it.
+  const [dragWidth, setDragWidth] = useState<number | null>(null)
+  const dragRef = useRef<{ startX: number; startWidth: number } | null>(null)
+  const treeWidth = dragWidth ?? treeWidthOf(tab)
+
+  const onResizeStart = (event: React.PointerEvent): void => {
+    event.preventDefault()
+    // jsdom lacks setPointerCapture — the tests dispatch plain MouseEvents.
+    event.currentTarget.setPointerCapture?.(event.pointerId)
+    dragRef.current = { startX: event.clientX, startWidth: treeWidth }
+  }
+  const onResizeMove = (event: React.PointerEvent): void => {
+    const drag = dragRef.current
+    if (drag === null) return
+    setDragWidth(clampTreeWidth(drag.startWidth + (drag.startX - event.clientX)))
+  }
+  const onResizeEnd = (event: React.PointerEvent): void => {
+    const drag = dragRef.current
+    if (drag === null) return
+    dragRef.current = null
+    setDragWidth(null)
+    const finalWidth = clampTreeWidth(drag.startWidth + (drag.startX - event.clientX))
+    if (finalWidth !== treeWidthOf(tab)) patchMeta(ctx, tab, { treeWidth: finalWidth })
+  }
+
   useEffect(() => {
+    // A (re)load or a path-less tab clears any hoisted toolbar state — the
+    // fresh viewer re-registers its own.
+    setToolbar(null)
+    // The seeded home tab (no path) never loads a viewer — the empty-state
+    // hint renders until the user picks a file.
+    if (showEmpty) return
     let cancelled = false
+    // Aborts the matched viewer's `load` when the editor tears down (tab
+    // closed, path changed, session switched) or re-matches the viewer.
+    const controller = new AbortController()
     setLoad({ status: 'loading' })
     const mediaUrlOf = (): string => mediaUrl(scope, path)
     const apply = (action: EditorLoadAction): void => {
@@ -50,7 +219,7 @@ export function EditorHost(props: { ctx: Context; store: SidebarStore; scope: Se
           })
           return
         case 'customLoad':
-          void action.viewer.load?.(path, scope).then((data) => {
+          void action.viewer.load?.(path, scope, controller.signal).then((data) => {
             if (cancelled) return
             setLoad({ status: 'ready', viewer: action.viewer, customData: data })
           }).catch((error: unknown) => {
@@ -77,25 +246,177 @@ export function EditorHost(props: { ctx: Context; store: SidebarStore; scope: Se
       }
     }
     apply(planFirstMatch(ctx.betterSidebar?.matchFileViewer(path), mediaUrlOf))
-    return () => { cancelled = true }
-  }, [scope.sessionId, scope.cwd, path, ctx])
+    return () => { cancelled = true; controller.abort() }
+  }, [scope.sessionId, scope.cwd, path, ctx, showEmpty])
+
+  const treeOpen = treeOpenOf(tab)
+  /** Persist the panel flag on the tab (survives reloads with the layout). */
+  const toggleTree = (): void => { patchMeta(ctx, tab, { treeOpen: !treeOpen }) }
+  const saveLabel = toolbar === null ? ''
+    : toolbar.saveState === 'saving' ? t('loading')
+      : toolbar.saveState === 'saved' ? t('saved')
+        : toolbar.saveState === 'failed' ? t('saveFailed') : ''
+
+  // Split mode: the path-less window IS the standalone explorer — the tree
+  // panel fills the whole tab (search + FileTree, full form), no editor
+  // chrome. File opens land in new per-path tabs through openFile above.
+  if (treeOnly) {
+    return (
+      <div className={css.editor}>
+        <TreePanel
+          full
+          sessionId={scope.sessionId}
+          cwd={scope.cwd}
+          expanded={expanded}
+          onToggle={onToggleDir}
+          onOpenFile={openFile}
+          onOpenFileNewTab={openFileNewTab}
+          onOpenFileSide={openFileSide}
+          onReferenceFile={onReferenceFile}
+        />
+      </div>
+    )
+  }
 
   return (
     <div className={css.editor}>
       <div className={css.editorHeader}>
-        <span className={css.editorTitle} title={path}>{title}</span>
+        <EditorPathInput key={path} path={path} cwd={scope.cwd} onOpen={openFile} />
+        {toolbar?.modes === true && (
+          <div className={css.editorModeToggle}>
+            <button
+              type="button"
+              className={clsx(css.editorModeButton, toolbar.mode === 'preview' && css.editorModeActive)}
+              onClick={() => { controlsRef.current?.setMode('preview') }}
+            >
+              {t('preview')}
+            </button>
+            <button
+              type="button"
+              className={clsx(css.editorModeButton, toolbar.mode === 'edit' && css.editorModeActive)}
+              onClick={() => { controlsRef.current?.setMode('edit') }}
+            >
+              {t('edit')}
+            </button>
+          </div>
+        )}
+        {toolbar?.dirty === true && <span className={css.dirtyDot} title={t('unsaved')} />}
+        {toolbar?.editable === true && (
+          <button
+            type="button"
+            className={css.iconButton}
+            aria-label={t('save')}
+            title={`${t('save')} (Ctrl/Cmd+S)`}
+            onClick={() => { controlsRef.current?.save() }}
+          >
+            <IconCheckOutline16 size={14} />
+          </button>
+        )}
+        {saveLabel !== '' && (
+          <span className={clsx(css.editorStatus, toolbar?.saveState === 'failed' && css.editorStatusError)}>{saveLabel}</span>
+        )}
+        <button
+          type="button"
+          className={clsx(css.iconButton, treeOpen && css.editorTreeToggleActive)}
+          aria-label={t('editorTreeToggle')}
+          title={t('editorTreeToggle')}
+          aria-pressed={treeOpen}
+          onClick={toggleTree}
+        >
+          <IconFolderOpen16 size={14} />
+        </button>
+      </div>
+      <div className={css.editorBody}>
+        <div className={css.editorMain}>
+          {showEmpty && <div className={css.editorPlaceholder}>{t('editorEmptyHint')}</div>}
+          {!showEmpty && load.status === 'loading' && <div className={css.editorPlaceholder}>{t('loading')}</div>}
+          {!showEmpty && load.status === 'error' && <div className={css.editorError}>{load.message}</div>}
+          {!showEmpty && load.status === 'binary' && <BinaryDownload scope={scope} path={path} />}
+          {!showEmpty && load.status === 'ready' && createElement(load.viewer.component, {
+            ctx, store, scope, path, title,
+            viewerId: load.viewer.id,
+            content: load.content,
+            truncated: load.truncated,
+            mediaUrl: load.mediaUrl,
+            customData: load.customData,
+            // The viewer's toolbar always hoists into this host's header.
+            toolbar: 'host',
+            onToolbarState,
+            onToolbarControls,
+          })}
+        </div>
+        {treeOpen && (
+          <div className={css.editorTreeDock} style={{ width: treeWidth }}>
+            <div
+              className={css.editorTreeResize}
+              role="separator"
+              aria-orientation="vertical"
+              aria-label={t('editorTreeToggle')}
+              onPointerDown={onResizeStart}
+              onPointerMove={onResizeMove}
+              onPointerUp={onResizeEnd}
+              onPointerCancel={onResizeEnd}
+            />
+            <TreePanel
+              sessionId={scope.sessionId}
+              cwd={scope.cwd}
+              expanded={expanded}
+              onToggle={onToggleDir}
+              onOpenFile={openFile}
+              onOpenFileNewTab={openFileNewTab}
+              onOpenFileSide={openFileSide}
+              onReferenceFile={onReferenceFile}
+            />
+          </div>
+        )}
       </div>
-      {load.status === 'loading' && <div className={css.editorPlaceholder}>{t('loading')}</div>}
-      {load.status === 'error' && <div className={css.editorError}>{load.message}</div>}
-      {load.status === 'binary' && <BinaryDownload scope={scope} path={path} />}
-      {load.status === 'ready' && createElement(load.viewer.component, {
-        ctx, store, scope, path, title,
-        viewerId: load.viewer.id,
-        content: load.content,
-        truncated: load.truncated,
-        mediaUrl: load.mediaUrl,
-        customData: load.customData,
-      })}
     </div>
   )
 }
+
+/**
+ * The header's path input: shows the current file relative to the session
+ * cwd (absolute when outside it). Enter resolves the typed path (relative
+ * input joins onto the cwd — the same resolution `openSidebarFile` uses)
+ * and opens it through the parent's mode-aware open (in-place switch or a
+ * per-path dedupe tab); Escape/blur restores the current value. The parent
+ * keys it by `path` so an in-place switch remounts and reseeds the draft.
+ */
+function EditorPathInput(props: { path: string; cwd: string | undefined; onOpen: (path: string) => void }) {
+  const { path, cwd, onOpen } = props
+  const display = path === '' ? '' : relativeTo(cwd ?? '', path)
+  const [value, setValue] = useState(display)
+
+  const commit = (): void => {
+    const input = value.trim()
+    if (input === '' || input === display) {
+      setValue(display)
+      return
+    }
+    onOpen(resolveSidebarPath(cwd, input))
+    // Split mode: the open lands in a NEW/deduped editor tab — THIS tab's
+    // path stays, so the input falls back to its own display value. (Merged
+    // mode remounts this input on the new path; the reset is harmless.)
+    setValue(display)
+  }
+
+  return (
+    <input
+      className={css.editorPathInput}
+      value={value}
+      placeholder={t('editorPathPlaceholder')}
+      title={path}
+      spellCheck={false}
+      onChange={(event) => { setValue(event.target.value) }}
+      onKeyDown={(event) => {
+        if (event.key === 'Enter') {
+          event.preventDefault()
+          commit()
+        } else if (event.key === 'Escape') {
+          setValue(display)
+        }
+      }}
+      onBlur={() => { setValue(display) }}
+    />
+  )
+}

src/client/ExplorerView.tsx

@@ -1,283 +0,0 @@
-/**
- * The file explorer: a lazy VSCode-style tree rooted at the session's
- * working directory. Levels load on expansion (one API call per directory),
- * directories sort first, hidden entries render dimmed, and the expansion
- * set lives in the per-session state. Clicking a file opens an editor tab.
- *
- * Row actions: hovering a row reveals an @-reference button on the far
- * right (appends `@<relative path>` to the composer draft), and right-click
- * opens a context menu to copy the relative or absolute path (with a brief
- * "copied" label replacing the button after a successful write); file rows
- * also offer a download action (the host serves raw bytes, binary-safe).
- */
-import { useCallback, useEffect, useRef, useState, type MouseEvent, type ReactNode } from 'react'
-import clsx from 'clsx'
-import {
-  IconCodeOutline16, IconCopyOutline16, IconDownloadOutline16, IconFolderClose16, IconFolderOpen16,
-  IconRefreshOutline16, Menu, writeClipboard,
-} from '@deepseek-ai/dsh-client-ui-primitives'
-import { api, downloadUrl, type FsEntry } from './api.ts'
-import { relativeTo } from './paths.ts'
-import { t } from './locales.ts'
-import css from './sidebar.module.css'
-
-interface LevelData {
-  entries?: FsEntry[]
-  error?: string
-}
-
-/** Root label: the last path segment (mirror of the host rootLabel). */
-function baseName(path: string): string {
-  const trimmed = path.replace(/[\\/]+$/, '')
-  const at = Math.max(trimmed.lastIndexOf('/'), trimmed.lastIndexOf('\\'))
-  return at === -1 ? trimmed : trimmed.slice(at + 1)
-}
-
-/** How long the row's "copied" label stays after a successful write. */
-const COPIED_MS = 1200
-
-export function ExplorerView(props: {
-  sessionId: string
-  cwd: string | undefined
-  expanded: string[]
-  onToggle: (path: string) => void
-  onOpenFile: (path: string) => void
-  /** Insert `@<relative path>` into the composer draft. */
-  onReferenceFile: (path: string) => void
-}) {
-  const { sessionId, cwd, expanded, onToggle, onOpenFile, onReferenceFile } = props
-  const [data, setData] = useState<Record<string, LevelData>>({})
-  const dataRef = useRef(data)
-  const [refreshTick, setRefreshTick] = useState(0)
-  /** The row whose path was just copied ("copied" label replaces its button). */
-  const [copiedPath, setCopiedPath] = useState<string | null>(null)
-  /** Open context menu: the row path (and whether it is a directory) plus the cursor position. */
-  const [rowMenu, setRowMenu] = useState<{ path: string; isDir: boolean; x: number; y: number } | null>(null)
-
-  const storeLevel = useCallback((path: string, level: LevelData) => {
-    dataRef.current = { ...dataRef.current, [path]: level }
-    setData(dataRef.current)
-  }, [])
-
-  const loadDir = useCallback((dir: string) => {
-    if (dataRef.current[dir] !== undefined) return
-    storeLevel(dir, {})
-    api.fsTree({ sessionId, cwd }, dir).then((listing) => {
-      storeLevel(dir, { entries: listing.entries })
-    }).catch((error: unknown) => {
-      storeLevel(dir, { error: error instanceof Error ? error.message : String(error) })
-    })
-  }, [sessionId, cwd, storeLevel])
-
-  useEffect(() => {
-    // Load the visible set; already-loaded levels (kept in the cache) are
-    // not refetched. Only the refresh button wipes the cache.
-    const root = cwd
-    if (root === undefined) return
-    loadDir(root)
-    for (const dir of expanded) loadDir(dir)
-  }, [cwd, expanded, refreshTick, loadDir])
-
-  /** Copy `text`; on success flip the row's copied label for a moment. */
-  const copyPath = useCallback((text: string, path: string): void => {
-    void writeClipboard(text).then((ok) => {
-      if (!ok) return
-      setCopiedPath(path)
-      window.setTimeout(() => {
-        setCopiedPath(current => current === path ? null : current)
-      }, COPIED_MS)
-    })
-  }, [])
-
-  /** The row's trailing actions: the @-reference button, or the copied label. */
-  const rowActions = (entry: FsEntry): ReactNode => {
-    if (copiedPath === entry.path) {
-      return <span className={css.explorerCopied}>{t('copied')}</span>
-    }
-    return (
-      <button
-        type="button"
-        className={css.explorerRef}
-        aria-label={t('referenceFile')}
-        title={t('referenceFile')}
-        onClick={(event) => {
-          event.stopPropagation()
-          onReferenceFile(entry.path)
-        }}
-      >
-        {t('referenceFile')}
-      </button>
-    )
-  }
-
-  const openRowMenu = (event: MouseEvent, path: string, isDir: boolean): void => {
-    event.preventDefault()
-    event.stopPropagation()
-    setRowMenu({ path, isDir, x: event.clientX, y: event.clientY })
-  }
-
-  /** Download a file through the host route (raw bytes, binary-safe). */
-  const downloadFile = (path: string): void => {
-    const url = downloadUrl({ sessionId, cwd }, path)
-    const anchor = document.createElement('a')
-    anchor.href = url
-    anchor.style.display = 'none'
-    document.body.appendChild(anchor)
-    anchor.click()
-    anchor.remove()
-  }
-
-  const root = cwd
-
-  const renderLevel = (dir: string, depth: number): ReactNode => {
-    const level = data[dir]
-    if (level === undefined) {
-      return <div className={css.explorerRow} style={{ paddingLeft: depth * 22 + 6 }}>{t('loading')}</div>
-    }
-    if (level.error !== undefined) {
-      return (
-        <div className={clsx(css.explorerRow, css.explorerError)} style={{ paddingLeft: depth * 22 + 6 }}>
-          {level.error}
-        </div>
-      )
-    }
-    const entries = level.entries ?? []
-    return entries.map(entry => {
-      if (entry.isDir) {
-        const isOpen = expanded.includes(entry.path)
-        return (
-          <div key={entry.path}>
-            <div
-              role="button"
-              tabIndex={0}
-              className={clsx(css.explorerRow, css.explorerDir, entry.hidden && css.explorerHidden)}
-              style={{ paddingLeft: depth * 22 + 6 }}
-              onClick={() => { onToggle(entry.path) }}
-              onKeyDown={(event) => {
-                if (event.key === 'Enter' || event.key === ' ') {
-                  event.preventDefault()
-                  onToggle(entry.path)
-                }
-              }}
-              onContextMenu={(event) => { openRowMenu(event, entry.path, true) }}
-            >
-              {isOpen ? <IconFolderOpen16 size={14} /> : <IconFolderClose16 size={14} />}
-              <span className={css.explorerName}>{entry.name}</span>
-              {rowActions(entry)}
-            </div>
-            {isOpen && renderLevel(entry.path, depth + 1)}
-          </div>
-        )
-      }
-      return (
-        <div
-          key={entry.path}
-          role="button"
-          tabIndex={0}
-          className={clsx(css.explorerRow, entry.hidden && css.explorerHidden)}
-          style={{ paddingLeft: depth * 22 + 6 }}
-          title={entry.path}
-          onClick={() => { onOpenFile(entry.path) }}
-          onKeyDown={(event) => {
-            if (event.key === 'Enter' || event.key === ' ') {
-              event.preventDefault()
-              onOpenFile(entry.path)
-            }
-          }}
-          onContextMenu={(event) => { openRowMenu(event, entry.path, false) }}
-        >
-          <IconCodeOutline16 size={14} />
-          <span className={css.explorerName}>{entry.name}</span>
-          {rowActions(entry)}
-        </div>
-      )
-    })
-  }
-
-  return (
-    <div className={css.explorer}>
-      <div className={css.explorerHeader}>
-        <span className={css.explorerRoot} title={root}>{root === undefined ? t('noSession') : baseName(root)}</span>
-        <button
-          type="button"
-          className={css.iconButton}
-          aria-label={t('refresh')}
-          title={t('refresh')}
-          onClick={() => {
-            dataRef.current = {}
-            setData({})
-            setRefreshTick(tick => tick + 1)
-          }}
-        >
-          <IconRefreshOutline16 />
-        </button>
-      </div>
-      <div className={css.explorerBody}>
-        {root === undefined ? (
-          <div className={css.explorerEmpty}>{t('noSession')}</div>
-        ) : (
-          <>
-            <div
-              className={css.explorerRow}
-              style={{ paddingLeft: 6 }}
-              onContextMenu={(event) => { openRowMenu(event, root, true) }}
-            >
-              <IconFolderOpen16 size={14} />
-              <span className={css.explorerName}>{baseName(root)}</span>
-              {copiedPath === root
-                ? <span className={css.explorerCopied}>{t('copied')}</span>
-                : (
-                  <button
-                    type="button"
-                    className={css.explorerRef}
-                    aria-label={t('referenceFile')}
-                    title={t('referenceFile')}
-                    onClick={(event) => {
-                      event.stopPropagation()
-                      onReferenceFile(root)
-                    }}
-                  >
-                    {t('referenceFile')}
-                  </button>
-                )}
-            </div>
-            {data[root] !== undefined && renderLevel(root, 1)}
-          </>
-        )}
-      </div>
-      {/*
-        The one shared context menu, positioned at the right-click cursor
-        (portal so the explorer's overflow clip cannot crop it).
-      */}
-      <Menu
-        open={rowMenu !== null}
-        onClose={() => { setRowMenu(null) }}
-        items={[
-          // Download applies to files only (the host route refuses directories).
-          ...(rowMenu?.isDir === false
-            ? [{ id: 'download', label: t('download'), icon: <IconDownloadOutline16 size={14} /> }]
-            : []),
-          { id: 'relative', label: t('copyRelative'), icon: <IconCopyOutline16 size={14} /> },
-          { id: 'absolute', label: t('copyAbsolute'), icon: <IconCopyOutline16 size={14} /> },
-        ]}
-        onSelect={(id) => {
-          const target = rowMenu
-          if (target === null) return
-          setRowMenu(null)
-          if (id === 'download') {
-            downloadFile(target.path)
-            return
-          }
-          copyPath(
-            id === 'relative' ? relativeTo(cwd ?? '', target.path) : target.path,
-            target.path,
-          )
-        }}
-        portal
-        align="start"
-        getAnchorRect={() => (rowMenu === null ? null : new DOMRect(rowMenu.x, rowMenu.y, 0, 0))}
-        anchor={<span />}
-      />
-    </div>
-  )
-}

src/client/FileTree.tsx

@@ -0,0 +1,550 @@
+/**
+ * The controlled file tree behind the files window's tree panel (TreePanel
+ * wraps it with the search box): a lazy VSCode-style tree rooted at the
+ * session's working directory. Levels load on expansion (one API call per
+ * directory), directories sort first, hidden entries render dimmed. The
+ * expansion set lives in the per-session state (owned by the caller); the
+ * caller also owns the refresh affordance — a `refreshTick` bump wipes the
+ * level cache so the visible set reloads.
+ *
+ * Row actions: hovering a row reveals an @-reference button on the far
+ * right (appends `@<relative path>` to the composer draft), and right-click
+ * opens a context menu: file rows offer the caller's open escapes
+ * (new tab / to the side, only when the callbacks exist) and a download
+ * action (the host serves raw bytes, binary-safe); directory rows offer
+ * "upload here"; every row can copy the relative or absolute path (with a
+ * brief "copied" label replacing the button after a successful write).
+ *
+ * Uploads start here (drag-drop or the context menu picker) but run in the
+ * caller: every request is reported through `onUploadRequest(dir, items)`
+ * (VSCode semantics — a drop on a file row targets its parent directory),
+ * and `busy` gates new drags while one upload is in flight.
+ */
+import { useCallback, useEffect, useRef, useState, type DragEvent, type MouseEvent, type ReactNode } from 'react'
+import { createPortal } from 'react-dom'
+import clsx from 'clsx'
+import {
+  IconCodeOutline16, IconCopyOutline16, IconDownloadOutline16, IconFolderClose16, IconFolderOpen16,
+  IconLinkOutline16, Menu, writeClipboard,
+} from '@deepseek-ai/dsh-client-ui-primitives'
+import { api, downloadUrl, type FsEntry } from './api.ts'
+import { IconUploadOutline16 } from './icons.tsx'
+import { relativeTo } from './paths.ts'
+import { t } from './locales.ts'
+import { uploadItemsFromDrop, uploadItemsFromFiles, type UploadItem } from './upload.ts'
+import css from './sidebar.module.css'
+
+interface LevelData {
+  entries?: FsEntry[]
+  error?: string
+}
+
+/** Root label: the last path segment (mirror of the host rootLabel). */
+export function baseName(path: string): string {
+  const trimmed = path.replace(/[\\/]+$/, '')
+  const at = Math.max(trimmed.lastIndexOf('/'), trimmed.lastIndexOf('\\'))
+  return at === -1 ? trimmed : trimmed.slice(at + 1)
+}
+
+/** The containing directory of an absolute row path (never the root edge here). */
+function parentOf(path: string): string {
+  const at = Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\'))
+  return at <= 0 ? path : path.slice(0, at)
+}
+
+/** Only OS file drags belong to the upload surface; in-app drags (tab reorder,
+ *  split zones) must pass through untouched to the pane's tab-drop handling
+ *  (mirror of Sidebar.tsx's panel-host shield gate). */
+function isFileDrag(event: DragEvent): boolean {
+  return event.dataTransfer?.types.includes('Files') ?? false
+}
+
+/** How long the row's "copied" label stays after a successful write. */
+const COPIED_MS = 1200
+
+/**
+ * The drop overlay's hero art: an arrow rising out of a notched tray
+ * (upload zone — the same glyph family as the toolbar's upload icon) and a
+ * tilted pair of photo cards (chat zone). Hand-drawn, colored in the
+ * palette of DSH's own native drop illustration (#3964FE / #9CE5ED) so the
+ * two zones read as one family; the drop overlay is this flow's one brand
+ * moment, so it gets color the rest of the UI never does.
+ */
+const UploadDropIllustration = () => (
+  <svg width="64" height="56" viewBox="0 0 64 56" fill="none" aria-hidden="true">
+    <path d="M32 28V11" stroke="#3964FE" strokeWidth="5" strokeLinecap="round" />
+    <path d="M23 20l9-9 9 9" stroke="#3964FE" strokeWidth="5" strokeLinecap="round" strokeLinejoin="round" />
+    <path
+      d="M10 40a4 4 0 0 1 4-4h7l3.2 4.6a5 5 0 0 0 4.1 2.2h7.4a5 5 0 0 0 4.1-2.2L43 36h7a4 4 0 0 1 4 4v2a10 10 0 0 1-10 10H20A10 10 0 0 1 10 42v-2z"
+      fill="#9CE5ED"
+    />
+  </svg>
+)
+
+/** The chat zone's art: two tilted photo cards, each with its own
+ *  sun-over-mountains motif (the back card carries detail too, so it never
+ *  reads as a bare blob). */
+const ChatDropIllustration = () => (
+  <svg width="96" height="76" viewBox="0 0 96 76" fill="none" aria-hidden="true">
+    <g transform="rotate(-12 24 34)">
+      <rect x="6" y="16" width="36" height="36" rx="10" fill="#9CE5ED" />
+      <circle cx="16" cy="27" r="3.5" fill="white" />
+      <path d="M11 44l8-9 6 6 4-4 8 9" stroke="white" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round" />
+    </g>
+    <g transform="rotate(8 61 35)">
+      <rect x="40" y="12" width="42" height="46" rx="10" fill="#3964FE" />
+      <circle cx="55" cy="27" r="5" fill="white" />
+      <path d="M46 50l10-13 7 8 6-6 9 11" stroke="white" strokeWidth="3.5" strokeLinecap="round" strokeLinejoin="round" />
+    </g>
+  </svg>
+)
+
+export function FileTree(props: {
+  sessionId: string
+  cwd: string | undefined
+  expanded: string[]
+  onToggle: (path: string) => void
+  onOpenFile: (path: string) => void
+  /** Context-menu "open in a new tab" (file rows; absent → no entry). */
+  onOpenFileNewTab?: (path: string) => void
+  /** Context-menu "open to the side" (file rows; absent → no entry). */
+  onOpenFileSide?: (path: string) => void
+  /** Insert `@<relative path>` into the composer draft. */
+  onReferenceFile: (path: string) => void
+  /** Bump to wipe the level cache and reload the visible set. */
+  refreshTick: number
+  /** Upload into `dir` (absolute, inside the workspace); runs in the caller. */
+  onUploadRequest: (dir: string, items: UploadItem[]) => void
+  /** True while an upload is in flight (drops are ignored). */
+  busy: boolean
+}) {
+  const { sessionId, cwd, expanded, onToggle, onOpenFile, onOpenFileNewTab, onOpenFileSide, onReferenceFile, refreshTick, onUploadRequest, busy } = props
+  const [data, setData] = useState<Record<string, LevelData>>({})
+  const dataRef = useRef(data)
+  /** The row whose path was just copied ("copied" label replaces its button). */
+  const [copiedPath, setCopiedPath] = useState<string | null>(null)
+  /** Open context menu: the row path (and whether it is a directory) plus the cursor position. */
+  const [rowMenu, setRowMenu] = useState<{ path: string; isDir: boolean; x: number; y: number } | null>(null)
+  /** Whether a file drag hovers the tree (drives the portaled drop zone). */
+  const [dropOver, setDropOver] = useState(false)
+  /** The directory a drag is hovering right now (null = body, drop to root). */
+  const [dropTarget, setDropTarget] = useState<string | null>(null)
+  /**
+   * Enter/leave depth under the tree body. dragenter/dragleave fire per
+   * element along the drag path (and bubble), so a counter — DSH InputBar's
+   * own pattern — is the flicker-free signal; relatedTarget is unreliable
+   * across engines for drag events.
+   */
+  const dropDepth = useRef(0)
+  /** Explorer body element; its viewport rect anchors the portaled drop zone. */
+  const bodyRef = useRef<HTMLDivElement>(null)
+  /** The body's viewport rect captured at drag entry (null = not measured). */
+  const [dropRect, setDropRect] = useState<{ top: number; left: number; width: number; height: number } | null>(null)
+  /** Context-menu "upload here" target directory. */
+  const pendingUploadDir = useRef<string | undefined>(undefined)
+  const fileInputRef = useRef<HTMLInputElement>(null)
+
+  /** Reset all drag state (drop landed, the drag left, or a new drag begins). */
+  const resetDrop = (): void => {
+    dropDepth.current = 0
+    setDropOver(false)
+    setDropTarget(null)
+    setDropRect(null)
+  }
+
+  /**
+   * Drop handlers: always swallow the event (a dropped file must never open
+   * in the browser), then report the target directory to the caller. A drop
+   * ends the drag without further leave events, so the depth resets here.
+   * The payload collection is async (dropped folders are traversed through
+   * their entry handles — captured synchronously inside uploadItemsFromDrop
+   * while the dataTransfer is still live), so the request rides a then.
+   */
+  const reportDrop = (dir: string, data: DataTransfer | undefined): void => {
+    if (busy) return
+    void uploadItemsFromDrop(data).then((items) => {
+      if (items.length > 0) onUploadRequest(dir, items)
+    })
+  }
+  const handleBodyDrop = (event: DragEvent): void => {
+    if (!isFileDrag(event)) return
+    event.preventDefault()
+    event.stopPropagation()
+    resetDrop()
+    if (cwd !== undefined) reportDrop(cwd, event.dataTransfer)
+  }
+  const handleDirDrop = (event: DragEvent, dir: string): void => {
+    if (!isFileDrag(event)) return
+    event.preventDefault()
+    event.stopPropagation()
+    resetDrop()
+    reportDrop(dir, event.dataTransfer)
+  }
+  const handleFileDrop = (event: DragEvent, path: string): void => {
+    // VSCode semantics: dropping onto a file uploads into its directory.
+    handleDirDrop(event, parentOf(path))
+  }
+  const handleBodyDragEnter = (event: DragEvent): void => {
+    if (!isFileDrag(event)) return
+    event.preventDefault()
+    event.stopPropagation()
+    dropDepth.current += 1
+    if (busy) return
+    // First entry: anchor the portaled drop zone to the body's rect.
+    if (dropDepth.current === 1) {
+      const rect = bodyRef.current?.getBoundingClientRect()
+      setDropRect(rect === undefined ? null : { top: rect.top, left: rect.left, width: rect.width, height: rect.height })
+    }
+    setDropOver(true)
+  }
+  const handleBodyDragLeave = (): void => {
+    dropDepth.current = Math.max(0, dropDepth.current - 1)
+    if (dropDepth.current > 0) return
+    setDropOver(false)
+    setDropTarget(null)
+    setDropRect(null)
+  }
+  const handleBodyDragOver = (event: DragEvent): void => {
+    if (!isFileDrag(event)) return
+    event.preventDefault()
+    event.stopPropagation()
+    event.dataTransfer.dropEffect = busy ? 'none' : 'copy'
+    if (busy) return
+    // Rows stop propagation, so this only fires over non-row regions: the
+    // drag targets the workspace root. dragover fires continuously, making
+    // it the authoritative (flicker-free) place to clear the row target.
+    setDropTarget(null)
+  }
+  const handleRowDragOver = (event: DragEvent, dir: string): void => {
+    if (!isFileDrag(event)) return
+    event.preventDefault()
+    event.stopPropagation()
+    event.dataTransfer.dropEffect = busy ? 'none' : 'copy'
+    if (busy) return
+    setDropTarget(dir)
+  }
+
+  const storeLevel = useCallback((path: string, level: LevelData) => {
+    dataRef.current = { ...dataRef.current, [path]: level }
+    setData(dataRef.current)
+  }, [])
+
+  const loadDir = useCallback((dir: string) => {
+    if (dataRef.current[dir] !== undefined) return
+    storeLevel(dir, {})
+    api.fsTree({ sessionId, cwd }, dir).then((listing) => {
+      storeLevel(dir, { entries: listing.entries })
+    }).catch((error: unknown) => {
+      storeLevel(dir, { error: error instanceof Error ? error.message : String(error) })
+    })
+  }, [sessionId, cwd, storeLevel])
+
+  // The caller's refresh tick wipes the cache (declared BEFORE the load
+  // effect so the reload below sees the empty cache).
+  const lastTick = useRef(refreshTick)
+  useEffect(() => {
+    if (lastTick.current === refreshTick) return
+    lastTick.current = refreshTick
+    dataRef.current = {}
+    setData({})
+  }, [refreshTick])
+
+  useEffect(() => {
+    // Load the visible set; already-loaded levels (kept in the cache) are
+    // not refetched. Only the refresh tick wipes the cache.
+    const root = cwd
+    if (root === undefined) return
+    loadDir(root)
+    for (const dir of expanded) loadDir(dir)
+  }, [cwd, expanded, refreshTick, loadDir])
+
+  /** Copy `text`; on success flip the row's copied label for a moment. */
+  const copyPath = useCallback((text: string, path: string): void => {
+    void writeClipboard(text).then((ok) => {
+      if (!ok) return
+      setCopiedPath(path)
+      window.setTimeout(() => {
+        setCopiedPath(current => current === path ? null : current)
+      }, COPIED_MS)
+    })
+  }, [])
+
+  /** The row's trailing actions: the @-reference button, or the copied label. */
+  const rowActions = (entry: FsEntry): ReactNode => {
+    if (copiedPath === entry.path) {
+      return <span className={css.explorerCopied}>{t('copied')}</span>
+    }
+    return (
+      <button
+        type="button"
+        className={css.explorerRef}
+        aria-label={t('referenceFile')}
+        title={t('referenceFile')}
+        onClick={(event) => {
+          event.stopPropagation()
+          onReferenceFile(entry.path)
+        }}
+      >
+        {t('referenceFile')}
+      </button>
+    )
+  }
+
+  const openRowMenu = (event: MouseEvent, path: string, isDir: boolean): void => {
+    event.preventDefault()
+    event.stopPropagation()
+    setRowMenu({ path, isDir, x: event.clientX, y: event.clientY })
+  }
+
+  /** Download a file through the host route (raw bytes, binary-safe). */
+  const downloadFile = (path: string): void => {
+    const url = downloadUrl({ sessionId, cwd }, path)
+    const anchor = document.createElement('a')
+    anchor.href = url
+    anchor.style.display = 'none'
+    document.body.appendChild(anchor)
+    anchor.click()
+    anchor.remove()
+  }
+
+  const root = cwd
+
+  const renderLevel = (dir: string, depth: number): ReactNode => {
+    const level = data[dir]
+    if (level === undefined) {
+      return <div className={css.explorerRow} style={{ paddingLeft: depth * 22 + 6 }}>{t('loading')}</div>
+    }
+    if (level.error !== undefined) {
+      return (
+        <div className={clsx(css.explorerRow, css.explorerError)} style={{ paddingLeft: depth * 22 + 6 }}>
+          {level.error}
+        </div>
+      )
+    }
+    const entries = level.entries ?? []
+    return entries.map(entry => {
+      if (entry.isDir) {
+        const isOpen = expanded.includes(entry.path)
+        return (
+          <div key={entry.path}>
+            <div
+              role="button"
+              tabIndex={0}
+              className={clsx(
+                css.explorerRow, css.explorerDir, entry.hidden && css.explorerHidden,
+                dropTarget === entry.path && css.explorerRowDropTarget,
+              )}
+              style={{ paddingLeft: depth * 22 + 6 }}
+              onClick={() => { onToggle(entry.path) }}
+              onKeyDown={(event) => {
+                if (event.key === 'Enter' || event.key === ' ') {
+                  event.preventDefault()
+                  onToggle(entry.path)
+                }
+              }}
+              onDragOver={(event) => { handleRowDragOver(event, entry.path) }}
+              onDrop={(event) => { handleDirDrop(event, entry.path) }}
+              onContextMenu={(event) => { openRowMenu(event, entry.path, true) }}
+            >
+              {isOpen ? <IconFolderOpen16 size={14} /> : <IconFolderClose16 size={14} />}
+              <span className={css.explorerName}>{entry.name}</span>
+              {entry.isSymlink && <IconLinkOutline16 size={12} className={css.explorerSymlink} />}
+              {rowActions(entry)}
+            </div>
+            {isOpen && renderLevel(entry.path, depth + 1)}
+          </div>
+        )
+      }
+      return (
+        <div
+          key={entry.path}
+          role="button"
+          tabIndex={0}
+          className={clsx(
+            css.explorerRow, entry.hidden && css.explorerHidden, entry.broken && css.explorerBroken,
+            dropTarget === parentOf(entry.path) && css.explorerRowDropTarget,
+          )}
+          style={{ paddingLeft: depth * 22 + 6 }}
+          title={entry.broken ? `${entry.path} — ${t('brokenSymlink')}` : entry.path}
+          onClick={() => { onOpenFile(entry.path) }}
+          onKeyDown={(event) => {
+            if (event.key === 'Enter' || event.key === ' ') {
+              event.preventDefault()
+              onOpenFile(entry.path)
+            }
+          }}
+          onDragOver={(event) => { handleRowDragOver(event, parentOf(entry.path)) }}
+          onDrop={(event) => { handleFileDrop(event, entry.path) }}
+          onContextMenu={(event) => { openRowMenu(event, entry.path, false) }}
+        >
+          <IconCodeOutline16 size={14} />
+          <span className={css.explorerName}>{entry.name}</span>
+          {entry.isSymlink && <IconLinkOutline16 size={12} className={css.explorerSymlink} />}
+          {rowActions(entry)}
+        </div>
+      )
+    })
+  }
+
+  return (
+    <div
+      ref={bodyRef}
+      className={css.explorerBody}
+      onDragEnter={handleBodyDragEnter}
+      onDragOver={handleBodyDragOver}
+      onDragLeave={handleBodyDragLeave}
+      onDrop={handleBodyDrop}
+    >
+      {root === undefined ? (
+        <div className={css.explorerEmpty}>{t('noSession')}</div>
+      ) : (
+        <>
+          <div
+            className={clsx(css.explorerRow, dropTarget === root && css.explorerRowDropTarget)}
+            style={{ paddingLeft: 6 }}
+            onDragOver={(event) => { handleRowDragOver(event, root) }}
+            onDrop={(event) => { handleDirDrop(event, root) }}
+            onContextMenu={(event) => { openRowMenu(event, root, true) }}
+          >
+            <IconFolderOpen16 size={14} />
+            <span className={css.explorerName}>{baseName(root)}</span>
+            {copiedPath === root
+              ? <span className={css.explorerCopied}>{t('copied')}</span>
+              : (
+                <button
+                  type="button"
+                  className={css.explorerRef}
+                  aria-label={t('referenceFile')}
+                  title={t('referenceFile')}
+                  onClick={(event) => {
+                    event.stopPropagation()
+                    onReferenceFile(root)
+                  }}
+                >
+                  {t('referenceFile')}
+                </button>
+              )}
+          </div>
+          {data[root] !== undefined && renderLevel(root, 1)}
+        </>
+      )}
+      {dropOver && dropRect !== null && createPortal(
+        /*
+         * The sidebar's drop surface, portaled to document.body at z-1001 —
+         * above DSH's own whole-page drop mask (z-1000, see InputBar's
+         * document-level intake) so the two never compete. It dims the WHOLE
+         * viewport (the giant box-shadow spread on the zone frame is the
+         * mask; the zone rect itself stays clear), teaching the zone split:
+         * the dimmed conversation column still takes drops into the chat
+         * natively (this layer is pointer-inert), while the clear frame
+         * marks the tree as the workspace-upload zone. Deliberate exception
+         * to the "panel stays below the DSH float stack" rule: transient,
+         * and the drop always lands on the element beneath. The hint pill
+         * docks at the TOP edge of the zone — right under the search row,
+         * the first thing the eye meets — keeping the rows aimable.
+         */
+        <>
+          <div
+            className={css.uploadDropZone}
+            style={{
+              top: dropRect.top + 2,
+              left: dropRect.left + 2,
+              width: dropRect.width - 4,
+              height: dropRect.height - 4,
+            }}
+          >
+            <div className={css.uploadDropHero}>
+              <UploadDropIllustration />
+              <div className={css.uploadDropZonePill}>
+                <IconUploadOutline16 size={14} />
+                <span className={css.uploadDropZoneText}>
+                  {dropTarget !== null ? t('uploadTo', { dir: dropTarget }) : t('uploadDropHint')}
+                </span>
+              </div>
+            </div>
+          </div>
+          {/* The left zone's invitation, centered in the space beside the
+              tree; skipped when that space is too narrow to hold it. */}
+          {dropRect.left >= 200 && (
+            <div className={css.uploadDropChatHint} style={{ width: dropRect.left }}>
+              <div className={css.uploadDropChatCard}>
+                <ChatDropIllustration />
+                <span>{t('uploadDropChat')}</span>
+              </div>
+            </div>
+          )}
+        </>,
+        document.body,
+      )}
+      {/*
+        The one shared context menu, positioned at the right-click cursor
+        (portal so the tree's overflow clip cannot crop it).
+      */}
+      <input
+        ref={fileInputRef}
+        type="file"
+        multiple
+        style={{ display: 'none' }}
+        onChange={(event) => {
+          const dir = pendingUploadDir.current ?? root
+          pendingUploadDir.current = undefined
+          if (dir !== undefined && !busy) onUploadRequest(dir, uploadItemsFromFiles(event.target.files ?? []))
+          event.target.value = ''
+        }}
+      />
+      <Menu
+        open={rowMenu !== null}
+        onClose={() => { setRowMenu(null) }}
+        items={[
+          // The open escapes head the FILE menu (dirs only get copy).
+          ...(rowMenu?.isDir === false && onOpenFileNewTab !== undefined
+            ? [{ id: 'open-new-tab', label: t('openFileNewTab'), icon: <IconCodeOutline16 size={14} /> }]
+            : []),
+          ...(rowMenu?.isDir === false && onOpenFileSide !== undefined
+            ? [{ id: 'open-side', label: t('openFileSide'), icon: <IconFolderOpen16 size={14} /> }]
+            : []),
+          // Download applies to files only (the host route refuses directories).
+          ...(rowMenu?.isDir === false
+            ? [{ id: 'download', label: t('download'), icon: <IconDownloadOutline16 size={14} /> }]
+            : []),
+          // Upload into a directory (incl. the workspace root row).
+          ...(rowMenu?.isDir === true
+            ? [{ id: 'upload-here', label: t('uploadHere'), icon: <IconUploadOutline16 size={14} /> }]
+            : []),
+          { id: 'relative', label: t('copyRelative'), icon: <IconCopyOutline16 size={14} /> },
+          { id: 'absolute', label: t('copyAbsolute'), icon: <IconCopyOutline16 size={14} /> },
+        ]}
+        onSelect={(id) => {
+          const target = rowMenu
+          if (target === null) return
+          setRowMenu(null)
+          if (id === 'open-new-tab') {
+            onOpenFileNewTab?.(target.path)
+            return
+          }
+          if (id === 'open-side') {
+            onOpenFileSide?.(target.path)
+            return
+          }
+          if (id === 'download') {
+            downloadFile(target.path)
+            return
+          }
+          if (id === 'upload-here') {
+            pendingUploadDir.current = target.path
+            fileInputRef.current?.click()
+            return
+          }
+          copyPath(
+            id === 'relative' ? relativeTo(cwd ?? '', target.path) : target.path,
+            target.path,
+          )
+        }}
+        portal
+        align="start"
+        getAnchorRect={() => (rowMenu === null ? null : new DOMRect(rowMenu.x, rowMenu.y, 0, 0))}
+        anchor={<span />}
+      />
+    </div>
+  )
+}

src/client/GitView.tsx

@@ -297,7 +297,7 @@ export function GitView(props: {
           title={t('refresh')}
           onClick={() => { void refresh() }}
         >
-          <IconRefreshOutline16 />
+          <IconRefreshOutline16 size={14} />
         </button>
       </div>
 

src/client/PptxView.tsx

@@ -1,131 +0,0 @@
-/** High-fidelity browser-native PPTX preview with slide navigation. */
-import { useEffect, useRef, useState } from 'react'
-import { downloadUrl, mediaUrl, type SessionScope } from './api.ts'
-import { t } from './locales.ts'
-import css from './sidebar.module.css'
-
-type PptxViewerInstance = import('@aiden0z/pptx-renderer').PptxViewer
-
-type LoadState =
-  | { status: 'loading' }
-  | { status: 'ready'; count: number }
-  | { status: 'error'; message: string }
-
-export function PptxView(props: { scope: SessionScope; path: string; title: string }) {
-  const { scope, path, title } = props
-  const hostRef = useRef<HTMLDivElement>(null)
-  const viewerRef = useRef<PptxViewerInstance | null>(null)
-  const [load, setLoad] = useState<LoadState>({ status: 'loading' })
-  const [slide, setSlide] = useState(0)
-  const [navigating, setNavigating] = useState(false)
-
-  useEffect(() => {
-    const controller = new AbortController()
-    const host = hostRef.current
-    if (host === null) return
-    setLoad({ status: 'loading' })
-    setSlide(0)
-    void (async () => {
-      try {
-        const response = await fetch(mediaUrl(scope, path), { signal: controller.signal })
-        if (!response.ok) throw new Error(`HTTP ${response.status}`)
-        const bytes = await response.arrayBuffer()
-        if (controller.signal.aborted) return
-        const { PptxViewer, RECOMMENDED_ZIP_LIMITS } = await import('@aiden0z/pptx-renderer')
-        if (controller.signal.aborted) return
-        const viewer = await PptxViewer.open(bytes, host, {
-          renderMode: 'slide',
-          fitMode: 'contain',
-          lazyMedia: true,
-          lazySlides: true,
-          pdfjs: false,
-          signal: controller.signal,
-          zipLimits: RECOMMENDED_ZIP_LIMITS,
-          onSlideChange: (index) => {
-            if (!controller.signal.aborted) setSlide(index)
-          },
-        })
-        if (controller.signal.aborted) {
-          viewer.destroy()
-          return
-        }
-        viewerRef.current = viewer
-        setSlide(viewer.currentSlideIndex)
-        setLoad({ status: 'ready', count: viewer.slideCount })
-      } catch (error) {
-        if (controller.signal.aborted) return
-        try {
-          viewerRef.current?.destroy()
-        } catch {
-          // Partially initialized viewer — ignore disposal errors.
-        }
-        viewerRef.current = null
-        host.innerHTML = ''
-        setLoad({ status: 'error', message: error instanceof Error ? error.message : String(error) })
-      }
-    })()
-    return () => {
-      controller.abort()
-      try {
-        viewerRef.current?.destroy()
-      } catch {
-        // Already destroyed.
-      }
-      viewerRef.current = null
-      host.innerHTML = ''
-    }
-  }, [scope.sessionId, scope.cwd, path])
-
-  const navigate = (target: number): void => {
-    const viewer = viewerRef.current
-    if (viewer === null || load.status !== 'ready' || navigating) return
-    const next = Math.max(0, Math.min(load.count - 1, target))
-    if (next === slide) return
-    setNavigating(true)
-    void viewer.goToSlide(next, { behavior: 'auto' }).then(() => {
-      setSlide(viewer.currentSlideIndex)
-    }).catch((error: unknown) => {
-      setLoad({ status: 'error', message: error instanceof Error ? error.message : String(error) })
-    }).finally(() => {
-      setNavigating(false)
-    })
-  }
-
-  return (
-    <div className={css.editorPptx} aria-label={title}>
-      <div className={css.editorPptxToolbar}>
-        <button
-          type="button"
-          className={css.editorPptxButton}
-          disabled={load.status !== 'ready' || slide <= 0 || navigating}
-          onClick={() => { navigate(slide - 1) }}
-        >
-          {t('previousSlide')}
-        </button>
-        <span className={css.editorPptxPosition}>
-          {load.status === 'ready' ? `${slide + 1} / ${load.count}` : '– / –'}
-        </span>
-        <button
-          type="button"
-          className={css.editorPptxButton}
-          disabled={load.status !== 'ready' || slide >= load.count - 1 || navigating}
-          onClick={() => { navigate(slide + 1) }}
-        >
-          {t('nextSlide')}
-        </button>
-        <a className={css.editorDownloadLink} href={downloadUrl(scope, path)} download>
-          {t('downloadToView')}
-        </a>
-      </div>
-      <div className={css.editorPptxStage}>
-        <div className={css.editorPptxHost} ref={hostRef} />
-        {load.status !== 'ready' && (
-          <div className={css.editorOfficeOverlay}>
-            {load.status === 'loading' && <div className={css.editorPlaceholder}>{t('loading')}</div>}
-            {load.status === 'error' && <div className={css.editorError}>{load.message}</div>}
-          </div>
-        )}
-      </div>
-    </div>
-  )
-}

src/client/RenderBoundary.tsx

@@ -0,0 +1,49 @@
+/**
+ * The generic render error boundary for the sidebar tree: a render error in
+ * the wrapped subtree shows a dismissible error strip (retry re-renders the
+ * children) instead of blanking the shell. Used at two scopes:
+ *
+ * - ROOT (index.tsx, `css.boundaryError`): last-resort containment for
+ *   errors in the sidebar shell itself (Workbench, drag layout, …) — a full
+ *   swap keeps the page alive.
+ * - PER-TAB (Sidebar.tsx TabContent, `css.tabBoundaryError`): a crashing
+ *   viewer/editor shows a strip inside ITS OWN pane; the toggle cluster, the
+ *   other tabs, and the panel itself stay alive (issue #31 — a tab crash
+ *   must never take down the whole sidebar).
+ *
+ * The className prop selects the strip's geometry: the root's full-height
+ * fixed rail vs. the tab's pane-filling block.
+ */
+import { Component, type ErrorInfo, type ReactNode } from 'react'
+import { t } from './locales.ts'
+import css from './sidebar.module.css'
+
+export class RenderBoundary extends Component<{ children?: ReactNode; className?: string }, { error: string | null }> {
+  state = { error: null as string | null }
+
+  static getDerivedStateFromError(error: unknown): { error: string } {
+    return { error: error instanceof Error ? error.message : String(error) }
+  }
+
+  componentDidCatch(error: Error, info: ErrorInfo): void {
+    console.error('[dsh-better-sidebar] render error:', error, info.componentStack)
+  }
+
+  render(): ReactNode {
+    if (this.state.error !== null) {
+      return (
+        <div className={this.props.className}>
+          <span>dsh-better-sidebar: {this.state.error}</span>
+          <button
+            type="button"
+            className={css.terminalRetry}
+            onClick={() => { this.setState({ error: null }) }}
+          >
+            {t('terminalRetry')}
+          </button>
+        </div>
+      )
+    }
+    return this.props.children
+  }
+}

src/client/SideCardSection.module.css

@@ -1,46 +1,107 @@
 /**
  * Side card settings section chrome (DSH-native tokens throughout):
+ * - the section is a column of GROUP CONTAINER cards (the PluginCard recipe:
+ *   l2 hairline, 16px radius, layer-3 fill) with a heading + inventory count
+ *   badge (the settings catalogHeading recipe), opening with a one-line
+ *   intro (the DSH section heading+intro recipe);
+ * - 常规 holds full-width settings rows (the DSH settings-row recipe:
+ *   title/desc left + control right, hairline separators) whose toggles are
+ *   custom switches — a real checkbox (native semantics and focus) driving
+ *   a styled track/thumb;
  * - the feature inventories are responsive GRIDS of small toggle cards
- *   (auto-fill columns — several cards per row, wrapping);
- * - a card's on/off state IS its visual state: enabled = brand border +
- *   tinted fill + a check badge pinned to the far right of the top row,
- *   disabled = neutral hairline + dimmed text;
- * - features that declare related settings carry a gear corner button
- *   opening a native Modal whose rows are the DSH settings-row recipe
- *   (title/desc left + native accent checkbox, hairline separators);
+ *   (auto-fill columns — several cards per row, wrapping): icon chip +
+ *   title + type id, the card's on/off state IS its visual state
+ *   (enabled = softened brand border + tinted fill + a compact brand
+ *   switch knob at the far right — the card itself is the toggle;
+ *   disabled = neutral hairline + dimmed, no knob); every card shares a
+ *   uniform min-height so rows stay equal whether or not they carry a
+ *   settings strip;
+ * - features that declare related settings carry a labeled SETTINGS STRIP
+ *   across the card's bottom edge (gear icon + text, hairline-separated)
+ *   opening a native Modal (wider than the primitive default) whose rows
+ *   follow the same row recipe with switch controls and a Done footer;
  * - the width input stays a native settings row (a value, not a switch).
  */
 
 .section {
   display: flex;
   flex-direction: column;
-  gap: 8px;
+  gap: 16px;
   width: 100%;
-  /* Tall inventories (7 tab cards + 9 viewer cards + general rows) must
-     never be clipped by the settings shell: fill the shell's options area
-     and scroll inside the section when the content outgrows the panel. */
-  height: 100%;
-  min-height: 0;
-  overflow-y: auto;
+  max-width: 760px;
+  /* The DSH settings shell's `.options` area owns vertical scrolling. Keep
+     this page a plain content column like Plugins → Plugin list so its
+     scrollbar stays at the shell edge instead of being inset by the options
+     area's right padding. */
 }
 
-.section > :last-child {
-  border-bottom: none;
+/* One-line section intro (the DSH section heading+intro recipe). */
+.intro {
+  margin: 0;
+  padding: 0 2px;
+  font-size: 13px;
+  line-height: 20px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+/* Group container: the DSH card recipe (PluginCard) — l2 hairline, r16,
+   layer-3 fill; holds its own heading + stacked rows / card grid. */
+.group {
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  padding: 20px;
+  box-sizing: border-box;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 16px;
+  background: var(--dsw-alias-bg-layer-3);
+}
+
+/* Group heading: 13/600 + the inventory count badge (the settings
+   catalogHeading recipe: count in tabular-nums, tertiary). */
+.groupHeading {
+  display: flex;
+  align-items: baseline;
+  gap: 7px;
+  padding: 0 2px 6px;
+  font-size: 13px;
+  line-height: 20px;
+  font-weight: 600;
+  color: var(--dsw-alias-label-primary);
+}
+
+/* The inventory count: a soft-accent pill (the versionBadgeTag token recipe)
+   so the count reads as metadata, not as part of the heading text. */
+.count {
+  padding: 1px 8px;
+  border-radius: 999px;
+  background: var(--dsw-alias-accent-soft, var(--dsw-alias-bg-layer-2));
+  font-size: 11px;
+  line-height: 16px;
+  font-weight: 500;
+  color: var(--dsw-alias-label-secondary);
+  font-variant-numeric: tabular-nums;
 }
 
 /* Responsive inventory: as many small cards per row as the width allows. */
 .grid {
   display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
-  gap: 8px;
+  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+  gap: 12px;
 }
 
-/* One small toggle card (visual chrome; the interactive part is .cardMain). */
+/* One small toggle card (visual chrome; the interactive part is .cardMain).
+   A uniform min-height keeps every inventory card the same height across
+   rows whether or not it carries a settings strip (strip cards are
+   naturally taller); overflow:hidden clips the strip to the card's radius. */
 .card {
   position: relative;
   display: flex;
   flex-direction: column;
-  border-radius: 8px;
+  min-height: 106px;
+  overflow: hidden;
+  border-radius: 12px;
   border: 1px solid var(--dsw-alias-border-l2);
   background: transparent;
   font: inherit;
@@ -52,21 +113,26 @@
 /* Hover affordance on disabled cards only (enabled cards are already lit). */
 .card:not(.cardOn):hover {
   background: var(--dsw-alias-interactive-bg-hover);
+  border-color: var(--dsw-alias-label-dimmed);
 }
 
-/* Enabled = highlighted: brand border + tinted fill. */
+/* Enabled = highlighted: a SOFTENED brand border (color-mix, the icon-chip
+   precedent) + tinted fill — full-strength brand reads harsh at card scale. */
 .cardOn {
-  border-color: var(--dsw-alias-button-primary-fill);
+  border-color: color-mix(in srgb, var(--dsw-alias-button-primary-fill) 45%, transparent);
   background: var(--dsw-alias-interactive-bg-active);
 }
 
-/* The card's switch: the whole main area (top row + desc) flips the feature. */
+/* The card's switch: the whole main area (top row + desc) flips the feature.
+   flex:1 lets the main area absorb the extra height of the uniform card
+   (cards without a settings strip stretch to match the strip cards). */
 .cardMain {
   display: flex;
+  flex: 1;
   flex-direction: column;
-  gap: 2px;
+  gap: 6px;
   width: 100%;
-  padding: 10px 12px;
+  padding: 12px;
   border: 0;
   border-radius: inherit;
   background: transparent;
@@ -77,7 +143,8 @@
 }
 
 .cardMain:focus-visible,
-.cardGear:focus-visible {
+.cardSettings:focus-visible,
+.rowGear:focus-visible {
   outline: 2px solid var(--dsw-alias-border-l4);
   outline-offset: 2px;
 }
@@ -85,18 +152,29 @@
 .cardTop {
   display: flex;
   align-items: center;
-  gap: 6px;
+  gap: 8px;
   min-width: 0;
+  min-height: 28px;
 }
 
-.cardIcon {
+/* The icon sits in a rounded chip: brand-tinted while the card is on,
+   neutral (layer-2 fill + hairline) while off. */
+.cardIconChip {
   display: inline-flex;
   align-items: center;
+  justify-content: center;
   flex: none;
+  width: 28px;
+  height: 28px;
+  border-radius: 8px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  background: var(--dsw-alias-bg-layer-2);
   color: var(--dsw-alias-label-tertiary);
 }
 
-.cardOn .cardIcon {
+.cardOn .cardIconChip {
+  border-color: color-mix(in srgb, var(--dsw-alias-button-primary-fill) 35%, transparent);
+  background: color-mix(in srgb, var(--dsw-alias-button-primary-fill) 12%, transparent);
   color: var(--dsw-alias-button-primary-fill);
 }
 
@@ -105,6 +183,7 @@
   min-width: 0;
   font-size: 13px;
   line-height: 20px;
+  font-weight: 600;
   color: var(--dsw-alias-label-secondary);
   white-space: nowrap;
   overflow: hidden;
@@ -115,12 +194,46 @@
   color: var(--dsw-alias-label-primary);
 }
 
-/* The check badge: pinned to the FAR RIGHT of the top row (enabled only). */
-.cardCheck {
+/* The compact on/off switch knob at the card's far right (enabled only):
+   the card itself is the toggle (aria-pressed on .cardMain), so this is a
+   PURELY VISUAL switch — same track/thumb geometry as the row switches,
+   one size down. Off cards show no knob (neutral card = off). */
+.cardSwitch {
   display: inline-flex;
   align-items: center;
   flex: none;
-  color: var(--dsw-alias-button-primary-fill);
+}
+
+.cardSwitchTrack {
+  display: inline-flex;
+  align-items: center;
+  width: 30px;
+  height: 16px;
+  padding: 2px;
+  box-sizing: border-box;
+  border-radius: 8px;
+  background: var(--dsw-alias-bg-layer-2);
+  border: 1px solid var(--dsw-alias-border-l2);
+  transition: background 0.15s ease, border-color 0.15s ease;
+}
+
+.cardSwitchThumb {
+  display: block;
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  background: var(--dsw-alias-label-tertiary);
+  transition: transform 0.15s ease, background 0.15s ease;
+}
+
+.cardOn .cardSwitchTrack {
+  border-color: var(--dsw-alias-button-primary-fill);
+  background: var(--dsw-alias-button-primary-fill);
+}
+
+.cardOn .cardSwitchThumb {
+  transform: translateX(14px);
+  background: var(--dsw-alias-bg-layer-3);
 }
 
 .cardDesc {
@@ -132,58 +245,115 @@
   text-overflow: ellipsis;
 }
 
+/* The "add plugin" card: same grid cell / chrome as the inventory cards
+   (it shares .card), but a DASHED border — the repo's first dashed surface;
+   the hover accent follows the existing drag-drop dashed outlines
+   (sidebar.module.css .dropCenter / .tabBarDrop). */
+.addCard {
+  align-items: flex-start;
+  padding: 12px;
+  border-style: dashed;
+  border-color: var(--dsw-alias-border-l2);
+  text-align: left;
+}
+
+.addCard:hover {
+  background: var(--dsw-alias-interactive-bg-hover);
+  border-color: var(--dsw-alias-interactive-bg-hover-accent);
+  color: var(--dsw-alias-label-primary);
+}
+
+.addCard:hover .cardTitle {
+  color: var(--dsw-alias-label-primary);
+}
+
+.addCard:hover .cardIconChip {
+  border-color: color-mix(in srgb, var(--dsw-alias-button-primary-fill) 35%, transparent);
+  color: var(--dsw-alias-button-primary-fill);
+}
+
+.addCard:focus-visible {
+  outline: 2px solid var(--dsw-alias-border-l4);
+  outline-offset: 2px;
+}
+
 .cardOn .cardDesc {
   color: var(--dsw-alias-label-secondary);
 }
 
-/* The gear corner button: bottom-right of cards that declare related
-   settings; the desc gets right padding so the ellipsis never runs under it. */
-.cardWithGear .cardDesc {
-  padding-right: 18px;
+/* The settings strip: a labeled full-width footer across the card's bottom
+   edge (gear icon + "功能设置" text), hairline-separated from the toggle
+   area. This is the SECONDARY settings entry — it must be discoverable at
+   rest (not a hover-only ghost), so it keeps a steady secondary-ink label
+   and answers hover with the brand-accent tint + brand ink. */
+.cardSettings {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  width: 100%;
+  padding: 6px 12px;
+  border: 0;
+  border-top: 1px solid var(--dsw-alias-border-l1);
+  background: transparent;
+  color: var(--dsw-alias-label-secondary);
+  font: inherit;
+  font-size: 11px;
+  line-height: 16px;
+  font-weight: 500;
+  text-align: left;
+  cursor: pointer;
+  transition: background 0.12s ease, color 0.12s ease;
 }
 
-.cardGear {
-  position: absolute;
-  right: 6px;
-  bottom: 6px;
+.cardOn .cardSettings {
+  border-top-color: color-mix(in srgb, var(--dsw-alias-button-primary-fill) 18%, transparent);
+}
+
+.cardSettings:hover {
+  background: var(--dsw-alias-interactive-bg-hover-accent);
+  color: var(--dsw-alias-brand-primary);
+}
+
+/* The gear icon button on a general settings ROW (the position-compat
+   row's "customize the strip height" entry): a bordered chip (not a ghost)
+   so it reads as a control at rest; hover answers with the accent tint. */
+.rowGear {
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  width: 20px;
-  height: 20px;
+  width: 22px;
+  height: 22px;
   padding: 0;
-  border: 0;
+  border: 1px solid var(--dsw-alias-border-l2);
   border-radius: 6px;
   background: transparent;
-  color: var(--dsw-alias-label-tertiary);
-  cursor: pointer;
-}
-
-.cardGear:hover {
-  color: var(--dsw-alias-label-primary);
-  background: var(--dsw-alias-interactive-bg-hover);
-}
-
-/* Inventory section heading (常规 / 侧边栏内容 / 文件预览). */
-.sectionHeading {
-  padding: 14px 0 0;
-  font-size: 12px;
-  line-height: 17px;
-  font-weight: 600;
-  letter-spacing: 0.02em;
   color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+  flex: none;
+  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
 }
 
-/* Native settings row recipe (the width input row + popup rows). */
+.rowGear:hover {
+  border-color: var(--dsw-alias-interactive-bg-hover-accent);
+  background: var(--dsw-alias-interactive-bg-hover-accent);
+  color: var(--dsw-alias-brand-primary);
+}
+
+/* Settings-row recipe (the DSH General section rows): title/desc left,
+   control right, hairline separators (stripped on the last row). */
 .row {
   display: flex;
   align-items: center;
   justify-content: space-between;
   gap: 16px;
-  padding: 12px 0;
+  padding: 12px 2px;
   border-bottom: 1px solid var(--dsw-alias-border-l2);
 }
 
+.row:last-child {
+  border-bottom: none;
+}
+
 .rowText {
   display: flex;
   flex-direction: column;
@@ -199,45 +369,66 @@
 
 .desc {
   font-size: 12px;
-  line-height: 17px;
-  color: var(--dsw-alias-label-secondary);
+  line-height: 18px;
+  color: var(--dsw-alias-label-tertiary);
 }
 
-/* Native checkbox: 16px, brand accent (the settings-row recipe). */
-.toggle {
+/* Custom switch: a real checkbox (native semantics + focus, visually
+   hidden) driving a styled 36x20 track with a sliding thumb. */
+.switch {
+  position: relative;
+  display: inline-flex;
   flex: none;
-  width: 16px;
-  height: 16px;
+  cursor: pointer;
+}
+
+.switchInput {
+  position: absolute;
+  width: 1px;
+  height: 1px;
   margin: 0;
-  accent-color: var(--dsw-alias-button-primary-fill);
-  cursor: pointer;
+  opacity: 0;
 }
 
-.toggle:focus-visible {
-  outline: 2px solid var(--dsw-alias-border-l4);
-  outline-offset: 2px;
-}
-
-/* Secondary settings popup body: stacked native rows, trailing separator
-   stripped by the trailing-child rule. */
-.popupRows {
-  display: flex;
-  flex-direction: column;
-  width: 100%;
-}
-
-.popupRow {
-  display: flex;
+.switchTrack {
+  display: inline-flex;
   align-items: center;
-  justify-content: space-between;
-  gap: 16px;
-  padding: 16px 0;
-  border-bottom: 1px solid var(--dsw-alias-border-l2);
-  cursor: pointer;
+  width: 36px;
+  height: 20px;
+  padding: 2px;
+  box-sizing: border-box;
+  border-radius: 10px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  background: var(--dsw-alias-bg-layer-2);
+  transition: background 0.15s ease, border-color 0.15s ease;
 }
 
-.popupRows > :last-child {
-  border-bottom: none;
+.switchThumb {
+  display: block;
+  width: 14px;
+  height: 14px;
+  border-radius: 50%;
+  background: var(--dsw-alias-label-tertiary);
+  transition: transform 0.15s ease, background 0.15s ease;
+}
+
+.switch:hover .switchTrack {
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+.switchInput:checked + .switchTrack {
+  border-color: var(--dsw-alias-button-primary-fill);
+  background: var(--dsw-alias-button-primary-fill);
+}
+
+.switchInput:checked + .switchTrack .switchThumb {
+  transform: translateX(16px);
+  background: var(--dsw-alias-bg-layer-3);
+}
+
+.switchInput:focus-visible + .switchTrack {
+  outline: 2px solid var(--dsw-alias-state-business-primary);
+  outline-offset: 2px;
 }
 
 .control {
@@ -251,12 +442,180 @@
   width: 76px;
 }
 
+/* Text/number rows in the settings popup: the free-form input (e.g. the
+   terminal font family) gets a generous width; numeric rows (font size)
+   keep the compact width of the general number inputs. */
+.typedInput {
+  width: 200px;
+}
+
+.typedInputNumber {
+  width: 76px;
+}
+
+/* Select rows: the closed anchor is a compact button (selected option's
+   icon when the options carry icons, plus title and a chevron); the dropdown
+   itself is the primitives Menu (portal). */
+.selectAnchor {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  max-width: 220px;
+  padding: 4px 8px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  background: var(--dsw-alias-bg-layer-3);
+  color: var(--dsw-alias-label-primary);
+  font-size: 13px;
+  line-height: 20px;
+  cursor: pointer;
+}
+
+.selectAnchor:hover {
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+.selectAnchorIcon {
+  display: inline-flex;
+  flex: none;
+}
+
+.selectAnchorText {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* One big-icon option card inside the select dropdown. */
+.selectOption {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-width: 200px;
+}
+
+.selectOptionIcon {
+  display: inline-flex;
+  flex: none;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.selectOptionText {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+}
+
 .suffix {
   font-size: 14px;
   line-height: 22px;
   color: var(--dsw-alias-label-secondary);
 }
 
+/* The multi-line custom-CSS input (scheme `custom`): monospace, generous
+   height, resizable — same surface tokens as the typed inputs. */
+.cssTextArea {
+  width: 100%;
+  box-sizing: border-box;
+  min-height: 120px;
+  padding: 8px 10px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  background: var(--dsw-alias-bg-layer-3);
+  color: var(--dsw-alias-label-primary);
+  font-family: var(--ds-font-family-code, monospace);
+  font-size: 12px;
+  line-height: 1.6;
+  resize: vertical;
+}
+
+.cssTextArea:focus-visible {
+  outline: 2px solid var(--dsw-alias-state-business-primary);
+  outline-offset: 2px;
+}
+
+/* Secondary settings popup: a wider dialog than the primitive default (the
+   dialog portals to document.body; the doubled class keeps the width rule
+   above the primitive's .dialog regardless of stylesheet order). */
+.popupDialog.popupDialog {
+  width: min(460px, 100%);
+}
+
+/* Popup rows: each setting gets the same outer chrome as a plugin-list
+   PluginCard (l2 hairline, 12px radius, layer-3 fill). The row's title,
+   description and control geometry stay unchanged inside that frame.
+   The body scrolls INTERNALLY once a feature declares many rows (e.g.
+   Terminal's six) — the dialog shell and its Done footer stay put; a thin
+   token-driven scrollbar makes the scrollable region discoverable.
+   box-sizing:border-box keeps width:100% + the scrollbar gutter from
+   overflowing horizontally (a content-box width would add the 4px pad and
+   show a horizontal scrollbar); overflow-x:hidden is the belt-and-braces
+   guarantee that rows always FILL the width and never slide sideways. */
+.popupRows {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  width: 100%;
+  box-sizing: border-box;
+  max-height: min(52vh, 440px);
+  overflow-y: auto;
+  overflow-x: hidden;
+  padding-right: 4px;
+  scrollbar-width: thin;
+  scrollbar-color: var(--dsw-alias-scrollbar-bg-l2, transparent) transparent;
+}
+
+.popupRows::-webkit-scrollbar {
+  width: 6px;
+}
+
+.popupRows::-webkit-scrollbar-thumb {
+  border-radius: 3px;
+  background: var(--dsw-alias-scrollbar-bg-l2, var(--dsw-alias-border-l2));
+}
+
+.popupRows::-webkit-scrollbar-thumb:hover {
+  background: var(--dsw-alias-scrollbar-hover-l2, var(--dsw-alias-label-dimmed));
+}
+
+.popupRow {
+  flex: none;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  min-width: 0;
+  padding: 12px 14px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 12px;
+  background: var(--dsw-alias-bg-layer-3);
+  transition: border-color 0.16s, background 0.16s;
+}
+
+.popupRow:hover {
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+/* The popup's Done button: the settings primary-button recipe
+   (PluginCard .save: label-primary fill, inverted surface text). */
+.done {
+  appearance: none;
+  border: 1px solid transparent;
+  border-radius: 8px;
+  padding: 5px 14px;
+  font: inherit;
+  font-size: 13px;
+  line-height: 1.5;
+  cursor: pointer;
+  background: var(--dsw-alias-label-primary);
+  color: var(--dsw-alias-bg-layer-3);
+}
+
+.done:focus-visible {
+  outline: 2px solid var(--dsw-alias-brand-primary);
+  outline-offset: 1px;
+}
+
 .error {
   padding: 10px 0 2px;
   font-size: 12px;
@@ -264,8 +623,273 @@
   color: var(--dsw-alias-state-error-primary);
 }
 
+/* ── "Add plugin" modal ──────────────────────────────────────────────── */
+
+/* A wide dialog like the settings popup (doubled class keeps the width
+   rule above the primitive's .dialog regardless of stylesheet order). */
+.pluginModal.pluginModal {
+  width: min(560px, 100%);
+}
+
+.pluginList {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  width: 100%;
+}
+
+/* The GitHub topic entry: a full-width secondary BUTTON (not a link — it
+   opens a real new browser tab via window.open, bypassing the sidebar
+   link takeover). */
+.pluginTopicBtn {
+  width: 100%;
+  appearance: none;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  padding: 6px 12px;
+  font: inherit;
+  font-size: 12px;
+  line-height: 18px;
+  color: var(--dsw-alias-label-secondary);
+  background: var(--dsw-alias-bg-layer-1);
+  cursor: pointer;
+}
+
+.pluginTopicBtn:hover {
+  background: var(--dsw-alias-interactive-bg-hover);
+  border-color: var(--dsw-alias-interactive-bg-hover-accent);
+  color: var(--dsw-alias-label-primary);
+}
+
+.pluginTopicBtn:focus-visible {
+  outline: 2px solid var(--dsw-alias-border-l4);
+  outline-offset: 1px;
+}
+
+.pluginEmpty {
+  padding: 20px 2px;
+  font-size: 12px;
+  line-height: 18px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+/* One catalog entry: name + install button on the head row, description,
+   then the install command in a mono block (the exact script that gets
+   pre-typed into the terminal — review it here before installing). */
+.pluginEntry {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 12px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 12px;
+  background: var(--dsw-alias-bg-layer-1);
+}
+
+.pluginEntryHead {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.pluginEntryActions {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  flex: none;
+}
+
+/* The per-entry "jump" button: opens the plugin repo in a REAL new browser
+   tab (window.open — a button, so the sidebar link takeover cannot reroute
+   it). Secondary style, quieter than the Install button. */
+.pluginJumpBtn {
+  flex: none;
+  appearance: none;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  padding: 3px 12px;
+  font: inherit;
+  font-size: 12px;
+  line-height: 1.5;
+  cursor: pointer;
+  background: transparent;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.pluginJumpBtn:hover {
+  background: var(--dsw-alias-interactive-bg-hover);
+  border-color: var(--dsw-alias-interactive-bg-hover-accent);
+  color: var(--dsw-alias-label-primary);
+}
+
+.pluginJumpBtn:focus-visible {
+  outline: 2px solid var(--dsw-alias-border-l4);
+  outline-offset: 1px;
+}
+
+/* The plugin name: a BUTTON (not an anchor — an anchor would be caught by
+   the sidebar link takeover at document capture, ignoring target=_blank)
+   styled like a link; opens the repo in a real new browser tab. */
+.pluginName {
+  appearance: none;
+  min-width: 0;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  font: inherit;
+  font-size: 13px;
+  line-height: 20px;
+  font-weight: 600;
+  color: var(--dsw-alias-label-primary);
+  text-align: left;
+  text-decoration: none;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  cursor: pointer;
+}
+
+.pluginName:hover {
+  text-decoration: underline;
+  color: var(--dsw-alias-button-primary-fill);
+}
+
+.pluginDesc {
+  font-size: 12px;
+  line-height: 18px;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.pluginInstall {
+  display: block;
+  padding: 6px 10px;
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: 11px;
+  line-height: 16px;
+  color: var(--dsw-alias-label-secondary);
+  background: var(--dsw-alias-bg-layer-2);
+  border: 1px solid var(--dsw-alias-border-l1);
+  border-radius: 8px;
+  overflow-x: auto;
+  white-space: nowrap;
+}
+
+/* The per-entry copy button: copies the install script to the
+   clipboard (the settings primary-button recipe, smaller than .done). */
+.pluginCopyBtn {
+  flex: none;
+  appearance: none;
+  border: 1px solid transparent;
+  border-radius: 8px;
+  padding: 3px 12px;
+  font: inherit;
+  font-size: 12px;
+  line-height: 1.5;
+  cursor: pointer;
+  background: var(--dsw-alias-label-primary);
+  color: var(--dsw-alias-bg-layer-3);
+}
+
+.pluginCopyBtn:hover {
+  background: var(--dsw-alias-button-primary-hover);
+}
+
+.pluginCopyBtn:focus-visible {
+  outline: 2px solid var(--dsw-alias-brand-primary);
+  outline-offset: 1px;
+}
+
 @media (prefers-reduced-motion: reduce) {
-  .card {
+  .card,
+  .cardSettings,
+  .cardSwitchTrack,
+  .cardSwitchThumb,
+  .rowGear,
+  .popupRow,
+  .switchTrack,
+  .switchThumb {
     transition: none;
   }
 }
+
+/* The managing plugin's identity badge: name + version pill, token-driven
+   (labels via --dsw-alias-label-*, surface via --dsw-alias-bg-layer-2). */
+.versionBadge {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  align-self: flex-start;
+  padding: 4px 12px 4px 14px;
+  border-radius: 999px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  background: var(--dsw-alias-bg-layer-2);
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.versionBadgeName {
+  color: var(--dsw-alias-label-primary);
+  font-weight: 600;
+}
+
+.versionBadgeTag {
+  padding: 1px 8px;
+  border-radius: 999px;
+  background: var(--dsw-alias-accent-soft, var(--dsw-alias-border-l2));
+  color: var(--dsw-alias-label-secondary);
+  font-variant-numeric: tabular-nums;
+}
+
+/* Catalog search input: a compact text field above the list (token-driven).
+   The entries list below it scrolls INDEPENDENTLY — with many plugins the
+   modal stays navigable instead of growing unbounded. */
+.pluginSearch {
+  width: 100%;
+  box-sizing: border-box;
+  appearance: none;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  padding: 6px 10px;
+  font: inherit;
+  font-size: 12px;
+  line-height: 18px;
+  color: var(--dsw-alias-label-primary);
+  background: var(--dsw-alias-bg-layer-1);
+}
+
+.pluginSearch::placeholder {
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.pluginSearch:focus-visible {
+  outline: 2px solid var(--dsw-alias-border-l4);
+  outline-offset: 1px;
+}
+
+/* The entries area scrolls within the modal once the catalog grows past
+   the viewport (max-height + own scrollbar keeps the modal shell fixed). */
+.pluginEntries {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  max-height: 46vh;
+  overflow-y: auto;
+  overflow-x: hidden;
+  padding-right: 2px;
+}
+
+/* One catalog group: optional category heading above its stacked entries. */
+.pluginGroup {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.pluginGroupHeading {
+  font-size: 12px;
+  line-height: 18px;
+  font-weight: 600;
+  color: var(--dsw-alias-label-secondary);
+  padding: 2px 2px 0;
+}

src/client/SideChatView.module.css

@@ -0,0 +1,437 @@
+/* Side Chat tab: ONE side conversation per tab (Codex-style). Visual
+ * language mirrors the main conversation pane: right-aligned user bubbles
+ * on --dsw-specific-bubble, full-width assistant markdown, a capsule
+ * composer card on --dsw-specific-input-major with a circular accent
+ * send/stop button. Tool calls, thinking and context injections share one
+ * collapsible-line chrome (no cards); shimmer is reserved for generating
+ * states (running status line, streaming rows, the creating hero). Motion
+ * is crossfade-only (≤200ms entrances, no springs); reduced-motion disables
+ * every loop. All values consume DSW tokens (fallbacks point at older alias
+ * tokens for rc-era hosts). */
+.sidechat {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+/* ── thread header (status dot · agent badge · threads menu · save) ─── */
+.sidechatDetailHeader {
+  flex: none;
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  min-height: 36px;
+  padding: 4px 8px 4px 12px;
+  border-bottom: 1px solid var(--dsw-alias-hairline);
+}
+
+.sidechatHeaderDot {
+  flex: none;
+}
+
+.sidechatHeaderSpacer {
+  flex: 1;
+  min-width: 0;
+}
+
+.sidechatAgentBadge {
+  flex: none;
+  max-width: 55%;
+  padding: 1px 8px;
+  border: 1px solid var(--dsw-alias-hairline);
+  border-radius: 999px;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.sidechatIconBtn {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  padding: 0;
+  border: none;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+  transition: background-color 100ms ease-out, color 100ms ease-out;
+}
+
+.sidechatIconBtn:hover:not(:disabled) {
+  background: var(--dsw-alias-interactive-bg-hover);
+  color: var(--dsw-alias-label-primary);
+}
+
+.sidechatIconBtn:disabled {
+  opacity: 0.4;
+  cursor: default;
+}
+
+/* ── hero (unbound tab: the one brand moment) ───────────────────────── */
+.sidechatHero {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  padding: 24px 20px;
+  color: var(--dsw-alias-label-tertiary);
+  text-align: center;
+  animation: sidechatFadeIn 200ms ease-out;
+}
+
+.sidechatHeroTitle {
+  font: var(--dsw-font-s-14);
+  font-weight: 500;
+  color: var(--dsw-alias-label-primary);
+}
+
+.sidechatHeroDesc {
+  max-width: 300px;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+  line-height: 1.6;
+}
+
+.sidechatPrimaryBtn {
+  flex: none;
+  margin-top: 4px;
+  padding: 6px 14px;
+  border: none;
+  border-radius: 999px;
+  background: var(--dsw-alias-button-info-fill, var(--dsw-alias-accent));
+  color: var(--dsw-alias-button-info-label, var(--dsw-alias-accent-ink, #fff));
+  font: var(--dsw-font-s-13);
+  cursor: pointer;
+  transition: opacity 100ms ease-out;
+}
+
+.sidechatPrimaryBtn:hover:not(:disabled) {
+  opacity: 0.88;
+}
+
+.sidechatPrimaryBtn:disabled {
+  opacity: 0.4;
+  cursor: default;
+}
+
+.sidechatHint {
+  flex: none;
+  padding: 4px 12px;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.sidechatError {
+  flex: none;
+  padding: 4px 12px;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-danger);
+}
+
+/* ── transcript ─────────────────────────────────────────────────────── */
+.sidechatScroll {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+  padding: 10px 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+/* Rows crossfade in on append (keys are stable, so only NEW rows play). */
+.sidechatScroll > * {
+  animation: sidechatRowIn 180ms ease-out;
+}
+
+/* User message: right-aligned bubble, same surface as the main pane. */
+.sidechatUser {
+  align-self: flex-end;
+  max-width: 88%;
+  padding: 8px 14px;
+  border-radius: 18px;
+  background: var(--dsw-specific-bubble, var(--dsw-alias-bg-base));
+  font: var(--dsw-font-s-14);
+  color: var(--dsw-alias-label-primary);
+  overflow-wrap: anywhere;
+}
+
+/* Assistant message: full-width narration, no bubble — the main pane way. */
+.sidechatAssistant {
+  align-self: stretch;
+  font: var(--dsw-font-s-14);
+  color: var(--dsw-alias-label-primary);
+  overflow-wrap: anywhere;
+}
+
+/* ── collapsible context rows (tool / thinking / injection, Codex-style) ──
+ * One quiet line — chevron + label + one-line summary — that expands into
+ * an indented body hung on a hairline thread. No cards, no fills: hierarchy
+ * rides ink weight alone. Streaming rows shimmer the label (shimmer =
+ * generating); failed rows go danger; reduced-motion stills every loop. */
+.sidechatRow {
+  align-self: stretch;
+}
+
+.sidechatRowLine {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 1px 0;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.sidechatRowSummary {
+  cursor: pointer;
+  list-style: none;
+  user-select: none;
+}
+
+.sidechatRowSummary::-webkit-details-marker {
+  display: none;
+}
+
+.sidechatRowSummary:hover {
+  color: var(--dsw-alias-label-secondary);
+}
+
+.sidechatRowStatic {
+  cursor: default;
+}
+
+.sidechatRowChevron {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  transition: transform 100ms ease-out;
+}
+
+.sidechatRow[open] .sidechatRowChevron {
+  transform: rotate(90deg);
+}
+
+.sidechatRowLabel {
+  flex: none;
+  max-width: 60%;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.sidechatRowMono {
+  font-family: var(--dsw-font-mono);
+}
+
+.sidechatRowMeta {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-family: var(--dsw-font-mono);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.sidechatRowFailed .sidechatRowLabel,
+.sidechatRowFailed .sidechatRowMeta {
+  color: var(--dsw-alias-danger);
+}
+
+.sidechatRowBody {
+  margin: 2px 0 4px 7px;
+  padding: 2px 0 2px 10px;
+  border-left: 1px solid var(--dsw-alias-hairline);
+}
+
+.sidechatRowProse {
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  max-height: 240px;
+  overflow-y: auto;
+}
+
+.sidechatRowCode {
+  margin: 0;
+  padding: 4px 0;
+  font: var(--dsw-font-xxs-12);
+  font-family: var(--dsw-font-mono);
+  color: var(--dsw-alias-label-secondary);
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  max-height: 220px;
+  overflow-y: auto;
+}
+
+.sidechatRowCode + .sidechatRowCode {
+  border-top: 1px solid var(--dsw-alias-hairline);
+}
+
+/* Shimmer sweep text: generating (streaming row labels, creating hero). */
+.sidechatShimmerText {
+  background-image: linear-gradient(
+    90deg,
+    var(--dsw-alias-label-tertiary) 0%,
+    var(--dsw-alias-label-primary) 50%,
+    var(--dsw-alias-label-tertiary) 100%
+  );
+  background-size: 200% 100%;
+  -webkit-background-clip: text;
+  background-clip: text;
+  color: transparent;
+  animation: sidechatSweep 2.6s linear infinite;
+}
+
+/* ── running status line (above the composer, main-pane style) ──────── */
+.sidechatStatus {
+  flex: none;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 2px 14px 6px;
+  animation: sidechatFadeIn 160ms ease-out;
+}
+
+.sidechatStatusText {
+  font: var(--dsw-font-xxs-12);
+  background-image: linear-gradient(
+    90deg,
+    var(--dsw-alias-label-tertiary) 0%,
+    var(--dsw-alias-label-primary) 50%,
+    var(--dsw-alias-label-tertiary) 100%
+  );
+  background-size: 200% 100%;
+  -webkit-background-clip: text;
+  background-clip: text;
+  color: transparent;
+  animation: sidechatSweep 2.6s linear infinite;
+}
+
+/* ── composer (capsule card, InputBar-aligned) ──────────────────────── */
+.sidechatComposer {
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  margin: 0 8px 8px;
+  padding: 8px 8px 6px 14px;
+  border: 1px solid var(--dsw-alias-border-l2-darkmode-thin, var(--dsw-alias-hairline));
+  border-radius: 16px;
+  background: var(--dsw-specific-input-major, var(--dsw-alias-bg-base));
+  box-shadow: var(--dsw-shadow-lv2, none);
+}
+
+.sidechatComposerInput {
+  width: 100%;
+  box-sizing: border-box;
+  padding: 2px 0;
+  border: none;
+  background: transparent;
+  color: var(--dsw-alias-label-primary);
+  font: var(--dsw-font-s-14);
+  line-height: 22px;
+  outline: none;
+  resize: none;
+  max-height: 132px;
+}
+
+.sidechatComposerInput::placeholder {
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.sidechatComposerBar {
+  flex: none;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  min-height: 28px;
+}
+
+.sidechatComposerMeta {
+  flex: 1;
+  min-width: 0;
+  font: var(--dsw-font-xxs-12);
+  color: var(--dsw-alias-label-tertiary);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.sidechatSendBtn {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  height: 28px;
+  padding: 0;
+  border: none;
+  border-radius: 50%;
+  background: var(--dsw-alias-button-info-fill, var(--dsw-alias-accent));
+  color: var(--dsw-alias-button-info-label, var(--dsw-alias-accent-ink, #fff));
+  cursor: pointer;
+  /* send ⇄ stop swap: keyed remount plays this, hover only fades. */
+  animation: sidechatBtnIn 120ms ease-out;
+  transition: opacity 100ms ease-out;
+}
+
+.sidechatSendBtn:hover:not(:disabled) {
+  opacity: 0.88;
+}
+
+.sidechatSendBtn:disabled {
+  opacity: 0.35;
+  cursor: default;
+}
+
+/* ── motion vocabulary (crossfade only, ≤200ms; loops reduced-motion off) */
+@keyframes sidechatRowIn {
+  from { opacity: 0; transform: translateY(4px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes sidechatFadeIn {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+@keyframes sidechatBtnIn {
+  from { opacity: 0; transform: scale(0.85); }
+  to { opacity: 1; transform: scale(1); }
+}
+
+@keyframes sidechatSweep {
+  from { background-position: 200% 0; }
+  to { background-position: -200% 0; }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .sidechatScroll > *,
+  .sidechatHero,
+  .sidechatStatus,
+  .sidechatSendBtn {
+    animation: none;
+  }
+  .sidechatStatusText,
+  .sidechatShimmerText {
+    animation: none;
+    background-image: none;
+    color: var(--dsw-alias-label-tertiary);
+  }
+  .sidechatRowChevron {
+    transition: none;
+  }
+}

src/client/SideChatView.tsx

@@ -0,0 +1,644 @@
+/**
+ * Side Chat page: Codex-style side conversations for the current session.
+ *
+ * EVERY side conversation is its own sidebar tab (侧边对话1/2/3 …): the
+ * descriptor's createTab mints a fresh tab flagged `autoCreate` and this
+ * view creates the EMPTY thread on mount (one click = one conversation,
+ * exactly like the Codex app); the composer owns the first message (the
+ * host wraps it with the side boundary + the in-progress snapshot parked
+ * at creation, and the thread earns its real label — and the tab its
+ * title — from that first message). Closing the tab releases the thread's
+ * live agent (its history stays persisted); the header menu reopens any
+ * existing thread into a tab (deduped by threadId).
+ *
+ * Each side thread is a child session the plugin created itself with a
+ * custom seed (the parent's full log up to the click moment — see
+ * sidechat-core.ts). Transport: thread creation/follow-up/cancel/dispose/
+ * info go through the plugin's own /sidebar/api sidechat.* routes
+ * (subagent-origin identities are fenced from the generic session RPCs);
+ * the transcript is polled from the generic session.history RPC (seed-cut
+ * at session/end-seed, boundary row dropped, chunk streaming accumulated)
+ * — see sidechat-transcript.ts.
+ */
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import { useSyncExternalStore } from 'react'
+import clsx from 'clsx'
+import {
+  IconChevronRightOutline14,
+  IconNewChatOutline16,
+  IconPlusOutline16,
+  IconSendOutline16,
+  IconStopFill16,
+  MarkdownText,
+  Menu,
+  StateDot,
+  type MenuEntry,
+} from '@deepseek-ai/dsh-client-ui-primitives'
+import { IconHistoryOutline16, IconSaveOutline16 } from './icons.tsx'
+import type { Context, SidebarHistoryEntry } from '../context-types.ts'
+import {
+  SIDE_LABEL_PREFIX,
+  SIDE_NEW_THREAD_TITLE,
+  sideThreadRows,
+  threadHasCompletedTurn,
+  threadTrailingPending,
+  type SidechatThreadInfo,
+} from '../sidechat-core.ts'
+import { collectOwnEvents, toolArgsSummary, transcriptRows, type SidechatTranscriptRow } from './sidechat-transcript.ts'
+import { api } from './api.ts'
+import { t } from './locales.ts'
+import type { SessionScope } from './api.ts'
+import type { SidebarTab } from './state.ts'
+import css from './SideChatView.module.css'
+
+/** Tail-page size for one transcript poll (events per page). Small on
+ *  purpose: streaming polls ride the tail and merge by seq. */
+const PAGE_MESSAGES = 8
+/** First-attach walk page size: cold reads re-expand chunk-rows into one
+ *  event per streamed delta, so a single answer can be hundreds of events —
+ *  the walk must page big or earlier tool/call rows fall out of the window. */
+const WALK_PAGE_EVENTS = 200
+/** Poll cadence while the selected thread is running and the tab visible. */
+const POLL_MS = 2000
+/** Textarea auto-grow ceiling (px) — the composer scrolls beyond it. */
+const COMPOSER_MAX_HEIGHT = 132
+
+/** The thread a tab is bound to (durable in tab.meta across refreshes). */
+export function sidechatThreadIdOf(tab: SidebarTab): string | undefined {
+  const meta = tab.meta as { threadId?: unknown } | undefined
+  return typeof meta?.threadId === 'string' ? meta.threadId : undefined
+}
+
+/** The parked reopen target consumed by the descriptor's createTab (the
+ *  service's createTab receives no seed, so a thread-switch parks the id
+ *  here and openTab picks it up synchronously — exactly one consume per
+ *  park). */
+let parkedReopen: string | undefined
+
+/** Park a thread id for the NEXT sidechat openTab to reattach. */
+export function parkSidechatReopen(threadId: string): void {
+  parkedReopen = threadId
+}
+
+/** Consume the parked reopen target (undefined = mint a fresh thread tab). */
+export function consumeSidechatSeed(): string | undefined {
+  const value = parkedReopen
+  parkedReopen = undefined
+  return value
+}
+
+/** In-flight thread creations keyed by tab id (double-mount guard: React
+ *  StrictMode / HMR must not mint two threads for one tab). */
+const inFlightStarts = new Set<string>()
+
+/** Per-thread transcript cache: seed boundary + thread-own events merged by
+ *  seq (streaming polls never re-download the inherited seed). */
+interface ThreadCache {
+  seedBoundary: number | null
+  entries: SidebarHistoryEntry[]
+}
+
+/** Row-render labels (locale-dependent, memoized once per mount). */
+interface RowLabels {
+  copyLabel: string
+  copiedLabel: string
+  thinkLabel: string
+  injectionLabel: string
+}
+
+/** Merge history entries by event seq (newest wins), log order preserved. */
+function mergeBySeq(
+  previous: readonly SidebarHistoryEntry[],
+  incoming: readonly SidebarHistoryEntry[],
+): SidebarHistoryEntry[] {
+  const bySeq = new Map<number, SidebarHistoryEntry>()
+  for (const entry of previous) bySeq.set(entry.event.seq, entry)
+  for (const entry of incoming) bySeq.set(entry.event.seq, entry)
+  return [...bySeq.values()].sort((a, b) => a.event.seq - b.event.seq)
+}
+
+/** The display title of a thread: the durable label minus the 'Side: '
+ *  prefix, with the fresh-thread placeholder localized. */
+function threadDisplayTitle(title: string): string {
+  if (title === SIDE_NEW_THREAD_TITLE) return t('sideChatUntitled')
+  return title.startsWith(SIDE_LABEL_PREFIX) ? title.slice(SIDE_LABEL_PREFIX.length) : title
+}
+
+/**
+ * One collapsible context row — the shared Codex-style chrome of tool
+ * calls, thinking and context injections: a single quiet line (chevron +
+ * label + one-line summary) that expands into an indented body hung on a
+ * hairline thread. Rows with nothing to reveal render as a static line.
+ */
+function CollapsibleRow(props: {
+  label: string
+  meta?: string
+  mono?: boolean
+  streaming?: boolean
+  failed?: boolean
+  children?: React.ReactNode
+}): React.ReactNode {
+  const label = (
+    <span
+      className={clsx(
+        css.sidechatRowLabel,
+        props.mono === true && css.sidechatRowMono,
+        props.streaming === true && css.sidechatShimmerText,
+      )}
+    >
+      {props.label}
+    </span>
+  )
+  const meta = props.meta !== undefined && props.meta !== ''
+    ? <span className={css.sidechatRowMeta}>{props.meta}</span>
+    : null
+  if (props.children === undefined) {
+    return (
+      <div className={clsx(css.sidechatRowLine, css.sidechatRowStatic, props.failed === true && css.sidechatRowFailed)}>
+        {label}
+        {meta}
+      </div>
+    )
+  }
+  return (
+    <details className={css.sidechatRow}>
+      <summary
+        className={clsx(
+          css.sidechatRowLine,
+          css.sidechatRowSummary,
+          props.failed === true && css.sidechatRowFailed,
+        )}
+      >
+        <span className={css.sidechatRowChevron}>
+          <IconChevronRightOutline14 size={12} />
+        </span>
+        {label}
+        {meta}
+      </summary>
+      <div className={css.sidechatRowBody}>{props.children}</div>
+    </details>
+  )
+}
+
+/** One row renderer (React keys ride the source event seq). */
+function renderRow(row: SidechatTranscriptRow, labels: RowLabels): React.ReactNode {
+  switch (row.kind) {
+    case 'user':
+      return (
+        <div key={`${row.kind}:${row.seq}`} className={css.sidechatUser}>
+          <MarkdownText text={row.text} codeLabels={labels} />
+        </div>
+      )
+    case 'assistant':
+      return (
+        <div key={`${row.kind}:${row.seq}`} className={css.sidechatAssistant}>
+          <MarkdownText text={row.text} codeLabels={labels} />
+        </div>
+      )
+    case 'reasoning':
+      return (
+        <CollapsibleRow
+          key={`${row.kind}:${row.seq}`}
+          label={labels.thinkLabel}
+          streaming={!row.settled}
+        >
+          <div className={css.sidechatRowProse}>{row.text}</div>
+        </CollapsibleRow>
+      )
+    case 'injection':
+      return (
+        <CollapsibleRow key={`${row.kind}:${row.seq}`} label={labels.injectionLabel}>
+          <div className={css.sidechatRowProse}>{row.text}</div>
+        </CollapsibleRow>
+      )
+    case 'tool': {
+      const body = (
+        <>
+          {row.args !== undefined && <pre className={css.sidechatRowCode}>{row.args}</pre>}
+          {row.resultText !== undefined && <pre className={css.sidechatRowCode}>{row.resultText}</pre>}
+        </>
+      )
+      return (
+        <CollapsibleRow
+          key={`${row.kind}:${row.seq}`}
+          label={row.name}
+          meta={toolArgsSummary(row.args)}
+          mono
+          streaming={row.executing === true}
+          failed={row.failed}
+          {...(row.args === undefined && row.resultText === undefined ? {} : { children: body })}
+        />
+      )
+    }
+  }
+}
+
+/** One side conversation tab (one thread per tab, Codex-style). */
+export function SideChatView(props: {
+  ctx: Context
+  scope: SessionScope
+  tab: SidebarTab
+  visible: boolean
+}): React.ReactNode {
+  const { ctx, scope, tab, visible } = props
+  const rowLabels = useMemo<RowLabels>(
+    () => ({
+      copyLabel: t('copy'),
+      copiedLabel: t('copied'),
+      thinkLabel: t('sideChatThink'),
+      injectionLabel: t('sideChatInjection'),
+    }),
+    [],
+  )
+
+  // The session list feed: thread rows (the header menu) + running states.
+  const list = useSyncExternalStore(
+    useMemo(() => (callback: () => void) => ctx.sessions.list.subscribe(callback), [ctx]),
+    useCallback(() => ctx.sessions.list.getSnapshot(), [ctx]),
+  )
+  const threads = useMemo(
+    () => sideThreadRows(list.byId, scope.sessionId),
+    [list, scope.sessionId],
+  )
+
+  // The thread this tab is bound to rides tab.meta (refresh-restored).
+  const threadId = sidechatThreadIdOf(tab)
+  const autoCreate = (tab.meta as { autoCreate?: unknown } | undefined)?.autoCreate === true
+
+  const [composer, setComposer] = useState('')
+  const [busy, setBusy] = useState<'starting' | 'sending' | 'saving' | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const [saved, setSaved] = useState(false)
+  const [revision, setRevision] = useState(0)
+  const [info, setInfo] = useState<SidechatThreadInfo | null>(null)
+  const [menuOpen, setMenuOpen] = useState(false)
+
+  const cacheRef = useRef<ThreadCache>({ seedBoundary: null, entries: [] })
+  const controllerRef = useRef<AbortController | null>(null)
+  const scrollRef = useRef<HTMLDivElement | null>(null)
+  const composerRef = useRef<HTMLTextAreaElement | null>(null)
+
+  const summary = threadId === undefined ? undefined : list.byId[threadId]
+  const running = summary?.running === true
+
+  /** The agent-identity badge of the thread header (preset · model). */
+  const agentBadge = useMemo(() => {
+    if (info === null) return ''
+    return [info.preset, info.model ?? info.provider].filter(Boolean).join(' · ')
+  }, [info])
+
+  /** Create this tab's thread (immediate-create tabs and hero retries). */
+  const startThread = useCallback(async (): Promise<void> => {
+    if (inFlightStarts.has(tab.id)) return
+    inFlightStarts.add(tab.id)
+    setBusy('starting')
+    setError(null)
+    try {
+      const { childId } = await api.sidechatStart(scope.sessionId)
+      ctx.betterSidebar?.updateTab(tab.id, { meta: { threadId: childId } })
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : String(cause))
+    } finally {
+      inFlightStarts.delete(tab.id)
+      setBusy(null)
+    }
+  }, [ctx, scope.sessionId, tab.id])
+
+  // Codex-style immediate create: an autoCreate tab spawns its thread as
+  // soon as it first renders.
+  useEffect(() => {
+    if (threadId !== undefined || !autoCreate || !visible) return
+    void startThread()
+  }, [threadId, autoCreate, visible, startThread])
+
+  // The tab title follows the thread's durable label (the first prompt
+  // renames the thread; the strip picks it up here).
+  useEffect(() => {
+    const display = summary?.displayTitle
+    if (display === undefined) return
+    const title = threadDisplayTitle(display)
+    if (title !== '' && title !== tab.title) {
+      try {
+        ctx.betterSidebar?.updateTab(tab.id, { title })
+      } catch {
+        // A stale title is cosmetic; the thread keeps working.
+      }
+    }
+  }, [summary, tab.id, tab.title, ctx])
+
+  /** One transcript pull: the first read walks back to the seed boundary
+   *  (big pages — chunk deltas re-expand on cold reads), later reads fetch
+   *  one tail page and merge (seq-deduped). */
+  const fetchThread = useCallback(async (childId: string): Promise<void> => {
+    controllerRef.current?.abort()
+    const controller = new AbortController()
+    controllerRef.current = controller
+    const cache = cacheRef.current
+    try {
+      if (cache.seedBoundary === null) {
+        const walk = await collectOwnEvents(async (beforeSeq) => {
+          const response = await ctx.connection.api.sessions.history(
+            {
+              sessionId: childId,
+              maxMessages: WALK_PAGE_EVENTS,
+              ...(beforeSeq === undefined ? {} : { beforeSeq }),
+            },
+            controller.signal,
+          )
+          if (!response.result.ok) throw new Error('history walk failed')
+          return response.result.value.events
+        })
+        cache.seedBoundary = walk.seedBoundary
+        cache.entries = mergeBySeq(cache.entries, walk.entries)
+      } else {
+        const response = await ctx.connection.api.sessions.history(
+          { sessionId: childId, maxMessages: PAGE_MESSAGES },
+          controller.signal,
+        )
+        if (!response.result.ok) return
+        cache.entries = mergeBySeq(cache.entries, response.result.value.events)
+      }
+      setRevision(value => value + 1)
+    } catch {
+      // Aborted by a newer pull or a wire failure: keep the last rows.
+    }
+  }, [ctx])
+
+  /** The thread header badge pull (live state + preset/model identity). */
+  const fetchInfo = useCallback(async (childId: string): Promise<void> => {
+    try {
+      setInfo(await api.sidechatInfo(childId))
+    } catch {
+      // The badge is decorative; a wire failure keeps the last value.
+    }
+  }, [])
+
+  // Reset the transcript cache whenever the binding changes, then focus
+  // the composer — it owns the first message of a fresh thread.
+  useEffect(() => {
+    cacheRef.current = { seedBoundary: null, entries: [] }
+    controllerRef.current?.abort()
+    setError(null)
+    setSaved(false)
+    setInfo(null)
+    if (threadId !== undefined) {
+      void fetchInfo(threadId)
+      window.setTimeout(() => composerRef.current?.focus(), 0)
+    }
+  }, [threadId, fetchInfo])
+
+  // Poll while the tab is visible and the thread runs.
+  useEffect(() => {
+    if (!visible || threadId === undefined) return
+    void fetchThread(threadId)
+    if (!running) return
+    const timer = window.setInterval(() => {
+      void fetchThread(threadId)
+      void fetchInfo(threadId)
+    }, POLL_MS)
+    return () => { window.clearInterval(timer) }
+  }, [visible, threadId, running, fetchThread, fetchInfo])
+
+  useEffect(() => () => { controllerRef.current?.abort() }, [])
+
+  const rows = useMemo(
+    () => (threadId === undefined ? [] : transcriptRows(cacheRef.current.entries)),
+    // The cache is a ref; revision bumps on every successful pull.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    [threadId, revision],
+  )
+  const canSave = threadId !== undefined && threadHasCompletedTurn(cacheRef.current.entries)
+  const trailingPending = threadId !== undefined && threadTrailingPending(cacheRef.current.entries)
+  const freshThread = threadId !== undefined && rows.length === 0
+
+  // Follow the stream: stick to the bottom while the log grows.
+  useEffect(() => {
+    const scroller = scrollRef.current
+    if (scroller === null) return
+    scroller.scrollTop = scroller.scrollHeight
+  }, [rows.length, threadId])
+
+  /** Open a NEW thread tab (createTab mints the autoCreate tab; its view
+   *  creates the thread on mount). */
+  const openNewThread = (): void => {
+    setMenuOpen(false)
+    ctx.betterSidebar?.openTab({ type: 'sidechat' }, scope)
+  }
+
+  /** Switch to an existing thread: parked for createTab, deduped to the
+   *  already-open tab when there is one. */
+  const openExistingThread = (id: string): void => {
+    setMenuOpen(false)
+    if (id === threadId) return
+    parkSidechatReopen(id)
+    ctx.betterSidebar?.openTab({ type: 'sidechat' }, scope)
+  }
+
+  const menuItems = useMemo<MenuEntry[]>(() => {
+    const items: MenuEntry[] = [
+      { id: '$new', label: t('sideChatNew'), icon: <IconPlusOutline16 /> },
+    ]
+    if (threads.length > 0) {
+      items.push({ type: 'separator', id: '$sep' })
+      for (const row of threads) {
+        items.push({
+          id: row.id,
+          label: threadDisplayTitle(row.title),
+          ...(row.running ? { icon: <StateDot state="ongoing" size={8} /> } : {}),
+        })
+      }
+    }
+    return items
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [threads])
+
+  const growComposer = (): void => {
+    const field = composerRef.current
+    if (field === null) return
+    field.style.height = '0px'
+    field.style.height = `${Math.min(field.scrollHeight, COMPOSER_MAX_HEIGHT)}px`
+  }
+
+  const handleSend = async (): Promise<void> => {
+    const text = composer.trim()
+    if (text === '' || threadId === undefined || busy !== null) return
+    setBusy('sending')
+    setError(null)
+    try {
+      await api.sidechatPrompt(threadId, text)
+      setComposer('')
+      const field = composerRef.current
+      if (field !== null) field.style.height = ''
+      void fetchThread(threadId)
+      void fetchInfo(threadId)
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : String(cause))
+    } finally {
+      setBusy(null)
+    }
+  }
+
+  const handleCancel = async (): Promise<void> => {
+    if (threadId === undefined || busy !== null) return
+    try {
+      await api.sidechatCancel(threadId)
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : String(cause))
+    }
+  }
+
+  const handleSave = async (): Promise<void> => {
+    if (threadId === undefined || !canSave || busy !== null) return
+    setBusy('saving')
+    setError(null)
+    setSaved(false)
+    try {
+      // NOTE: fork must stay a METHOD call — `ctx.sessions.fork` is the
+      // client-runtime sessions service, and an unbound reference loses
+      // `this` (its fork reads this.list for the title bump).
+      if (ctx.sessions.fork === undefined) throw new Error('session fork is unavailable')
+      const newId = await ctx.sessions.fork({ sessionId: threadId, increaseTitle: true })
+      const title = summary === undefined ? '' : threadDisplayTitle(summary.displayTitle).trim()
+      const binding = ctx.sessions.binding?.(newId)
+      if (binding !== undefined && title !== '') {
+        await binding.session.rename(title)
+      }
+      ctx.sessions.open?.(newId)
+      setSaved(true)
+    } catch (cause) {
+      setError(cause instanceof Error ? cause.message : String(cause))
+    } finally {
+      setBusy(null)
+    }
+  }
+
+  // ── unbound tab: the hero (fresh autoCreate tabs flash a creating state
+  //    until the thread lands; legacy persisted tabs offer a manual start) ──
+  if (threadId === undefined) {
+    return (
+      <div className={css.sidechat}>
+        <div className={css.sidechatHero}>
+          <IconNewChatOutline16 />
+          <div
+            className={clsx(
+              css.sidechatHeroTitle,
+              busy === 'starting' && css.sidechatShimmerText,
+            )}
+          >
+            {busy === 'starting' ? t('sideChatCreating') : t('sideChatEmpty')}
+          </div>
+          <div className={css.sidechatHeroDesc}>{t('sideChatEmptyDesc')}</div>
+          {error !== null && <div className={css.sidechatError}>{t('sideChatError', { message: error })}</div>}
+          {busy !== 'starting' && (
+            <button
+              type="button"
+              className={css.sidechatPrimaryBtn}
+              onClick={() => void startThread()}
+            >
+              {error === null ? t('sideChatNew') : t('sideChatRetry')}
+            </button>
+          )}
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className={css.sidechat}>
+      <div className={css.sidechatDetailHeader}>
+        {running && <StateDot state="ongoing" size={8} className={css.sidechatHeaderDot} />}
+        {agentBadge !== '' && <span className={css.sidechatAgentBadge}>{agentBadge}</span>}
+        <span className={css.sidechatHeaderSpacer} />
+        <Menu
+          open={menuOpen}
+          anchor={(
+            <button
+              type="button"
+              className={css.sidechatIconBtn}
+              onClick={() => { setMenuOpen(value => !value) }}
+              title={t('sideChatThreads')}
+            >
+              <IconHistoryOutline16 />
+            </button>
+          )}
+          items={menuItems}
+          selectedId={threadId}
+          onSelect={(id) => { id === '$new' ? openNewThread() : openExistingThread(id) }}
+          onClose={() => { setMenuOpen(false) }}
+          align="end"
+          portal
+          dense
+        />
+        <button
+          type="button"
+          className={css.sidechatIconBtn}
+          onClick={() => void handleSave()}
+          disabled={!canSave || busy !== null}
+          title={`${t('sideChatSave')} — ${t('sideChatSaveTitle')}`}
+        >
+          <IconSaveOutline16 />
+        </button>
+      </div>
+      {!canSave && !freshThread && <div className={css.sidechatHint}>{t('sideChatNoTurn')}</div>}
+      {canSave && trailingPending
+        && <div className={css.sidechatHint}>{t('sideChatPendingDrop')}</div>}
+      {saved && <div className={css.sidechatHint}>{t('sideChatSaved')}</div>}
+      {error !== null && <div className={css.sidechatError}>{t('sideChatError', { message: error })}</div>}
+      <div ref={scrollRef} className={css.sidechatScroll}>
+        {rows.map(row => renderRow(row, rowLabels))}
+      </div>
+      {running && (
+        <div className={css.sidechatStatus}>
+          <StateDot state="ongoing" size={8} />
+          <span className={css.sidechatStatusText}>{t('sideChatThinking')}</span>
+        </div>
+      )}
+      <div className={css.sidechatComposer}>
+        <textarea
+          ref={composerRef}
+          className={css.sidechatComposerInput}
+          value={composer}
+          placeholder={freshThread ? t('sideChatFirstPlaceholder') : t('sideChatComposerPlaceholder')}
+          rows={1}
+          onChange={event => {
+            setComposer(event.target.value)
+            growComposer()
+          }}
+          onKeyDown={event => {
+            if (event.key !== 'Enter' || event.shiftKey || event.nativeEvent.isComposing) return
+            event.preventDefault()
+            void handleSend()
+          }}
+        />
+        <div className={css.sidechatComposerBar}>
+          <span className={css.sidechatComposerMeta}>
+            {running ? '' : agentBadge}
+          </span>
+          {running ? (
+            <button
+              key="stop"
+              type="button"
+              className={css.sidechatSendBtn}
+              onClick={() => void handleCancel()}
+              disabled={busy !== null}
+              title={t('sideChatCancelTitle')}
+            >
+              <IconStopFill16 />
+            </button>
+          ) : (
+            <button
+              key="send"
+              type="button"
+              className={css.sidechatSendBtn}
+              onClick={() => void handleSend()}
+              disabled={composer.trim() === '' || busy !== null}
+              title={t('sideChatSend')}
+            >
+              <IconSendOutline16 />
+            </button>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}

src/client/SubagentView.module.css

@@ -273,3 +273,275 @@
   background: var(--dsw-alias-interactive-bg-hover);
   color: var(--dsw-alias-label-primary);
 }
+
+/* ── Background-job section (below the topology tree) ────────────────── */
+
+.jobs {
+  margin-top: 10px;
+  border-top: 1px solid var(--dsw-alias-border-l2);
+  padding-top: 8px;
+}
+
+.jobsHeader {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  height: 26px;
+  padding: 0 2px;
+}
+
+.jobsTitle {
+  flex: 1;
+  min-width: 0;
+  font: var(--dsw-font-xxxs-strong-11);
+  color: var(--dsw-alias-label-secondary);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.jobsCount {
+  flex: none;
+  font: var(--dsw-font-xxxs-11);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.jobsList {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+/* One job row; the whole row lights up on hover, the expandable target
+   stays transparent (the kill button rides on the row's right edge). */
+.jobsRow {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  border-radius: 8px;
+}
+
+.jobsRow:hover {
+  background: var(--dsw-alias-interactive-bg-hover);
+}
+
+.jobsRowSettled {
+  opacity: 0.8;
+}
+
+/* The row whose output is shown in the bottom dock. */
+.jobsRowSelected,
+.jobsRowSelected:hover {
+  background: var(--dsw-alias-interactive-bg-active);
+}
+
+.jobsRowMain {
+  flex: 1;
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  min-width: 0;
+  padding: 6px 8px 6px 11px;
+  border: none;
+  border-radius: 8px;
+  background: transparent;
+  font: var(--dsw-font-s-14);
+  color: var(--dsw-alias-label-primary);
+  text-align: left;
+  cursor: pointer;
+  outline: none;
+}
+
+.jobsRowMain:focus-visible {
+  background: var(--dsw-alias-interactive-bg-hover);
+}
+
+.jobsDot {
+  margin-top: 5px;
+}
+
+.jobsContent {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+  gap: 1px;
+}
+
+/* The command line: a kind badge followed by the command itself in the code
+   face, like the terminal's live lines. */
+.jobsLabelLine {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  min-width: 0;
+}
+
+.jobsKind {
+  flex: none;
+  max-width: 90px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  padding: 0 5px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 4px;
+  font: var(--dsw-font-xxxs-strong-11);
+  line-height: 14px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.jobsLabel {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-family: var(--ds-font-family-code);
+  font-size: var(--dsw-font-xxxs-11-font-size);
+  line-height: var(--dsw-font-xxxs-11-line-height);
+  color: var(--dsw-alias-label-primary);
+}
+
+.jobsSecondary {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font: var(--dsw-font-xxxs-11);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.jobsKill {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 22px;
+  height: 22px;
+  margin-right: 4px;
+  border: none;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+}
+
+.jobsKill:hover {
+  background: color-mix(in srgb, var(--dsw-alias-state-error-primary) 12%, transparent);
+  color: var(--dsw-alias-state-error-primary);
+}
+
+/* The armed (first-click) state: a filled confirm chip instead of the icon. */
+.jobsKillArmed,
+.jobsKillArmed:hover {
+  width: auto;
+  height: 20px;
+  padding: 0 8px;
+  background: color-mix(in srgb, var(--dsw-alias-state-error-primary) 12%, transparent);
+  color: var(--dsw-alias-state-error-primary);
+  font: var(--dsw-font-xxxs-strong-11);
+  white-space: nowrap;
+}
+
+.jobsKill:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+.jobsKillError {
+  flex: none;
+  margin-right: 4px;
+  font: var(--dsw-font-xxxs-11);
+  color: var(--dsw-alias-state-error-primary);
+}
+
+/* ── The shared output dock (bottom of the page, sticky like a terminal) ── */
+
+/* Direct child of the scrolling body, so it docks at the scrollport's bottom
+   edge while the job list scrolls above it; a solid background keeps the
+   tree from showing through. */
+.jobsPane {
+  position: sticky;
+  bottom: 0;
+  z-index: 1;
+  margin-top: 4px;
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  background: var(--dsw-alias-bg-base);
+  box-shadow: 0 -6px 12px -8px rgba(0, 0, 0, 0.35);
+  overflow: hidden;
+}
+
+.jobsPaneHeader {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  height: 28px;
+  padding: 0 4px 0 10px;
+  border-bottom: 1px solid var(--dsw-alias-border-l1);
+}
+
+.jobsPaneDot {
+  flex: none;
+}
+
+.jobsPaneLabel {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-family: var(--ds-font-family-code);
+  font-size: var(--dsw-font-xxxs-11-font-size);
+  line-height: var(--dsw-font-xxxs-11-line-height);
+  color: var(--dsw-alias-label-primary);
+}
+
+.jobsPaneStatus {
+  flex: none;
+  font: var(--dsw-font-xxxs-11);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.jobsPaneClose {
+  flex: none;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 20px;
+  height: 20px;
+  border: none;
+  border-radius: 5px;
+  background: transparent;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+}
+
+.jobsPaneClose:hover {
+  background: var(--dsw-alias-interactive-bg-hover);
+}
+
+.jobsPanePre {
+  margin: 0;
+  max-height: 200px;
+  overflow: auto;
+  padding: 6px 10px;
+  font-family: var(--ds-font-family-code);
+  font-size: var(--dsw-font-xxxs-11-font-size);
+  line-height: 1.5;
+  color: var(--dsw-alias-label-primary);
+  white-space: pre-wrap;
+  word-break: break-word;
+}
+
+.jobsPaneHint {
+  padding: 8px 10px;
+  font: var(--dsw-font-xxxs-11);
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.jobsPaneError {
+  color: var(--dsw-alias-state-error-primary);
+}

src/client/SubagentView.tsx

@@ -27,18 +27,33 @@ import {
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   Context,
+  SidebarSessionList,
   SidebarSessionSummary,
   SidebarSubagentAddress,
   SidebarSubagentCatalog,
   SidebarSubagentChildEntry,
   SidebarSubagentDiagnosticEntry,
+  SidebarJobView,
 } from '../context-types.ts'
 import {
   collectBranchIds,
   countSubagentDescendants,
+  isSideThreadSummary,
   rootAncestor,
 } from './subagent-detect.ts'
-import { lastActivity } from './subagent-activity.ts'
+import { type LastActivity } from '../subagent-activity.ts'
+import { SIDE_LABEL_PREFIX } from '../sidechat-core.ts'
+import {
+  collectTreeJobs,
+  formatJobDuration,
+  isJobLive,
+  orderJobs,
+  jobDotState,
+  jobStatusLabel,
+  type TreeJob,
+} from './subagent-jobs.ts'
+import { api, type JobOutputResult } from './api.ts'
+import { IconStopOutline16 } from './icons.tsx'
 import { t } from './locales.ts'
 import css from './SubagentView.module.css'
 
@@ -46,14 +61,21 @@ import css from './SubagentView.module.css'
 const POLL_MS = 3000
 /** Preview cap of one tool-call argument line. */
 const ARGS_PREVIEW = 60
+/** Refresh cadence of an expanded job-output panel while its job runs. */
+const JOB_POLL_MS = 2000
+/** How long the kill button stays armed before it needs re-confirming. */
+const JOB_KILL_ARM_MS = 3000
 
-/** The direct subagent children of one parent (durable `origin` rows). */
+/** The direct subagent children of one parent (durable `origin` rows;
+ *  Side Chat threads ride the same origin but are tab-strip conversations,
+ *  never topology). */
 function directChildren(
   byId: Readonly<Record<string, SidebarSessionSummary>>,
   parentSessionId: string,
 ): SidebarSessionSummary[] {
   return Object.values(byId).filter(
-    summary => summary.origin === 'subagent' && summary.parentId === parentSessionId,
+    summary => summary.origin === 'subagent' && summary.parentId === parentSessionId
+      && !isSideThreadSummary(summary),
   )
 }
 
@@ -128,56 +150,14 @@ function CatalogLoadingRows(props: {
 }
 
 /**
- * The live lines of one RUNNING subagent card: the last text output and the
- * last tool call of the child's history tail, refreshed every few seconds
- * while the page is visible. Idle cards render nothing (a quiet topology); a
- * running child with neither output yet reads "thinking…".
+ * The live lines of one RUNNING subagent card: a pure presentation of the
+ * batch `subagents.live` activity. The polling lives in one place (the
+ * SubagentView hook), not per card. A running child with neither output yet
+ * reads "thinking…".
  */
-function SubagentLiveLines(props: {
-  ctx: Context
-  parentSessionId: string
-  childSessionId: string
-  mode: SidebarSubagentAddress['mode']
-  running: boolean
-  /** The page is visible (active tab + open panel): skip polling otherwise. */
-  active: boolean
-}) {
-  const { ctx, parentSessionId, childSessionId, mode, running, active } = props
-  const [live, setLive] = useState<ReturnType<typeof lastActivity>>({})
-  const controllerRef = useRef<AbortController | undefined>(undefined)
-  const address = useMemo(
-    () => ({ parentSessionId, childSessionId, mode }),
-    [parentSessionId, childSessionId, mode],
-  )
-
-  const load = useCallback(async (): Promise<void> => {
-    controllerRef.current?.abort()
-    const controller = new AbortController()
-    controllerRef.current = controller
-    try {
-      const response = await ctx.connection.api.subagents.history(
-        { ...address, maxMessages: 12 },
-        controller.signal,
-      )
-      if (!response.result.ok) return
-      setLive(lastActivity(response.result.value.events))
-    } catch {
-      // Aborted by a newer pull or a wire failure: keep the last known lines.
-    }
-  }, [ctx, address])
-
-  useEffect(() => {
-    if (!active) return
-    void load()
-    if (!running) return
-    const timer = window.setInterval(() => { void load() }, POLL_MS)
-    return () => { window.clearInterval(timer) }
-  }, [load, running, active])
-
-  useEffect(() => () => { controllerRef.current?.abort() }, [])
-
-  if (!running) return null
-  if (live.text === undefined && live.tool === undefined) {
+function SubagentLiveLines(props: { live: LastActivity | undefined }) {
+  const { live } = props
+  if (live?.text === undefined && live?.tool === undefined) {
     return <span className={css.subagentLive}>{t('subagentThinking')}</span>
   }
   return (
@@ -197,6 +177,59 @@ function SubagentLiveLines(props: {
   )
 }
 
+/**
+ * One shared live-preview poller for the whole Subagent tree. Unlike the old
+ * per-card `subagents.history` timers, this sends at most ONE `subagents.live`
+ * request at a time: a recursive timeout starts only after the previous
+ * request settles, so a slow host never sees abort/restart storms.
+ */
+function useSubagentLive(
+  rootId: string | undefined,
+  active: boolean,
+): Readonly<Record<string, LastActivity>> {
+  const [live, setLive] = useState<Record<string, LastActivity>>({})
+  const controllerRef = useRef<AbortController | undefined>(undefined)
+
+  // A new tree must never inherit another root's live previews.
+  useEffect(() => { setLive({}) }, [rootId])
+
+  useEffect(() => {
+    if (rootId === undefined || !active) return
+    const targetRootId = rootId
+    let disposed = false
+    let timer: number | undefined
+
+    const schedule = (): void => {
+      if (disposed) return
+      timer = window.setTimeout(() => { void load() }, POLL_MS)
+    }
+    async function load(): Promise<void> {
+      if (disposed) return
+      const controller = new AbortController()
+      controllerRef.current = controller
+      try {
+        const result = await api.subagentsLive(targetRootId, controller.signal)
+        if (!disposed) setLive(result.live)
+      } catch {
+        // Keep the last known live map; the next scheduled poll retries.
+      } finally {
+        if (controllerRef.current === controller) controllerRef.current = undefined
+        if (!disposed) schedule()
+      }
+    }
+
+    void load()
+    return () => {
+      disposed = true
+      if (timer !== undefined) window.clearTimeout(timer)
+      controllerRef.current?.abort()
+      controllerRef.current = undefined
+    }
+  }, [rootId, active])
+
+  return live
+}
+
 interface RowsProps {
   parentSessionId: string
   catalog: SidebarSubagentCatalog | undefined
@@ -205,19 +238,26 @@ interface RowsProps {
   level: number
   /** The currently-open session id (highlighted in the topology). */
   currentSessionId: string
-  /** The page is visible (active tab + open panel): live polling pauses otherwise. */
-  active: boolean
-  ctx: Context
+  /** The batch live-preview map (child id → latest activity). */
+  live: Readonly<Record<string, LastActivity>>
   openChild: (address: SidebarSubagentAddress) => void
   refresh: (parentSessionId: string) => void
 }
 
 /** Render one topology level; branches are always expanded (lazy catalogs). */
 function CatalogRows({
-  parentSessionId, catalog, catalogs, byId, level, currentSessionId, active, ctx,
+  parentSessionId, catalog, catalogs, byId, level, currentSessionId, live,
   openChild, refresh,
 }: RowsProps) {
   const emptyLoading = catalog?.state === 'loading' && catalog.entries.length === 0
+  // Side Chat threads are honest catalog citizens (durable descriptor, 'Side: '
+  // label) but they are NOT subagent topology — filter them out here (the tab
+  // strip owns them). Legacy threads created before the descriptor fix still
+  // arrive as corrupt diagnostics; they are recognized by summary title.
+  const visibleEntries = (catalog?.entries ?? []).filter((entry) => {
+    if (entry.kind === 'child') return !(entry.label?.startsWith(SIDE_LABEL_PREFIX) ?? false)
+    return !(byId[entry.id]?.displayTitle.startsWith(SIDE_LABEL_PREFIX) ?? false)
+  })
   return (
     <>
       {emptyLoading && (
@@ -236,7 +276,7 @@ function CatalogRows({
           </button>
         </div>
       )}
-      {(catalog?.entries ?? []).map((entry) => {
+      {visibleEntries.map((entry) => {
         if (entry.kind === 'diagnostic') {
           return (
             <div key={entry.id} className={css.subagentNode}>
@@ -297,14 +337,9 @@ function CatalogRows({
               <span className={css.subagentContent}>
                 <span className={css.subagentLabel}>{label}</span>
                 <span className={css.subagentSecondary}>{secondary}</span>
-                <SubagentLiveLines
-                  ctx={ctx}
-                  parentSessionId={parentSessionId}
-                  childSessionId={entry.id}
-                  mode={entry.mode}
-                  running={entry.activity === 'running'}
-                  active={active}
-                />
+                {entry.activity === 'running' && (
+                  <SubagentLiveLines live={live[entry.id]} />
+                )}
               </span>
             </div>
             {!knownLeaf && (
@@ -325,8 +360,7 @@ function CatalogRows({
                       byId={byId}
                       level={level + 1}
                       currentSessionId={currentSessionId}
-                      active={active}
-                      ctx={ctx}
+                      live={live}
                       openChild={openChild}
                       refresh={refresh}
                     />
@@ -340,6 +374,262 @@ function CatalogRows({
   )
 }
 
+/**
+ * The shared output dock of the jobs section: ONE pane at the bottom of the
+ * sidebar body (sticky, terminal-like) shows the SELECTED job's output as
+ * the MODEL has read it so far (replayed from the owner session's event
+ * log), refreshed every {@link JOB_POLL_MS} while the job runs and the
+ * page is visible. The model's `job_output` cursor is never touched — the
+ * pane can never steal the agent's bytes, and it stays empty until the
+ * agent reads the job. A single dock — not a panel per row — keeps the
+ * job list compact and stable when many jobs are running.
+ */
+function JobOutputPane(props: {
+  ownerSessionId: string
+  job: SidebarJobView
+  /** The page is visible (active tab + open panel): skip polling otherwise. */
+  active: boolean
+  onClose: () => void
+}) {
+  const { ownerSessionId, job, active, onClose } = props
+  const [state, setState] = useState<'loading' | JobOutputResult | 'error'>('loading')
+  const controllerRef = useRef<AbortController | undefined>(undefined)
+  const preRef = useRef<HTMLPreElement>(null)
+
+  const load = useCallback(async (): Promise<void> => {
+    controllerRef.current?.abort()
+    const controller = new AbortController()
+    controllerRef.current = controller
+    try {
+      const result = await api.jobOutput({ sessionId: ownerSessionId }, job.id, controller.signal)
+      setState(result)
+    } catch {
+      // A newer pull aborted this one, or the wire failed: keep the last
+      // known output; only a dock that never loaded anything shows an error.
+      setState(current => (current === 'loading' ? 'error' : current))
+    }
+  }, [ownerSessionId, job.id])
+
+  useEffect(() => {
+    void load()
+    if (!active || !isJobLive(job)) return
+    const timer = window.setInterval(() => { void load() }, JOB_POLL_MS)
+    return () => { window.clearInterval(timer) }
+  }, [load, active, job.status])
+
+  useEffect(() => () => { controllerRef.current?.abort() }, [])
+
+  // Terminal-tail behavior: while the job runs, each refresh pins the view
+  // to the newest output; a settled dock leaves scrolling to the reader.
+  useEffect(() => {
+    if (!isJobLive(job) || typeof state !== 'object' || state.text.length === 0) return
+    const pre = preRef.current
+    if (pre !== null) pre.scrollTop = pre.scrollHeight
+  }, [state, job.status])
+
+  return (
+    <div className={css.jobsPane} role="region" aria-label={`${job.label} ${t('jobs')}`}>
+      <div className={css.jobsPaneHeader}>
+        <StateDot state={jobDotState(job.status)} className={css.jobsPaneDot} />
+        <span className={css.jobsPaneLabel} title={job.label}>{job.label}</span>
+        <span className={css.jobsPaneStatus}>
+          {jobStatusLabel(job.status, t)}
+          {job.detail !== undefined && job.detail !== '' ? ` · ${job.detail}` : ''}
+        </span>
+        <button
+          type="button"
+          className={css.jobsPaneClose}
+          aria-label={t('close')}
+          title={t('close')}
+          onClick={onClose}
+        >
+          <IconStopOutline16 size={10} />
+        </button>
+      </div>
+      {state === 'loading' && <div className={css.jobsPaneHint}>{t('loading')}</div>}
+      {state === 'error' && (
+        <div className={`${css.jobsPaneHint} ${css.jobsPaneError}`}>{t('jobOutputError')}</div>
+      )}
+      {typeof state === 'object' && (
+        <>
+          {state.text.length > 0
+            ? <pre ref={preRef} className={css.jobsPanePre}>{state.text}</pre>
+            : state.read
+              ? <div className={css.jobsPaneHint}>{t('jobNoOutput')}</div>
+              : <div className={css.jobsPaneHint}>{t('jobNotReadYet')}</div>}
+          {state.truncated && <div className={css.jobsPaneHint}>{t('jobOutputTruncated')}</div>}
+        </>
+      )}
+    </div>
+  )
+}
+
+/**
+ * The background-job section of the Subagent page: every job of the whole
+ * current tree (main agent + subagents, owner-labeled), fed by the harness
+ * `session/jobs` push mirror. Clicking a row feeds its model-read output to
+ * the shared bottom dock (event replay — never the model's cursor); live
+ * rows carry a two-click-confirm kill button. Renders nothing while the
+ * tree has no jobs.
+ */
+function JobsSection(props: {
+  byId: SidebarSessionList['byId']
+  jobsBySession: SidebarSessionList['jobsBySession']
+  rootId: string | undefined
+  /** The page is visible (active tab + open panel): skip polling otherwise. */
+  active: boolean
+}) {
+  const { byId, jobsBySession, rootId, active } = props
+  const rows = useMemo(
+    () => orderJobs(collectTreeJobs(byId, jobsBySession, rootId)),
+    [byId, jobsBySession, rootId],
+  )
+  const [selectedId, setSelectedId] = useState<string | undefined>(undefined)
+  const [armedId, setArmedId] = useState<string | undefined>(undefined)
+  const [killingId, setKillingId] = useState<string | undefined>(undefined)
+  const [killErrorId, setKillErrorId] = useState<string | undefined>(undefined)
+  // The duration clock only runs while a live row is on screen.
+  const [now, setNow] = useState(() => Date.now())
+
+  const selectedRow = useMemo(
+    () => (selectedId === undefined ? undefined : rows.find(row => row.job.id === selectedId)),
+    [rows, selectedId],
+  )
+
+  const liveCount = useMemo(
+    () => rows.reduce((count, row) => count + (isJobLive(row.job) ? 1 : 0), 0),
+    [rows],
+  )
+  const multiOwner = useMemo(
+    () => new Set(rows.map(row => row.ownerSessionId)).size > 1,
+    [rows],
+  )
+
+  // The kill button stays armed only briefly; a stray click must never kill.
+  useEffect(() => {
+    if (armedId === undefined) return
+    const timer = window.setTimeout(() => { setArmedId(undefined) }, JOB_KILL_ARM_MS)
+    return () => { window.clearTimeout(timer) }
+  }, [armedId])
+
+  useEffect(() => {
+    if (liveCount === 0) return
+    setNow(Date.now())
+    const timer = window.setInterval(() => { setNow(Date.now()) }, 1_000)
+    return () => { window.clearInterval(timer) }
+  }, [liveCount])
+
+  // The docked output pane follows its job: when the selected job leaves
+  // the mirror (settled and dropped, or the tree switched), close the dock.
+  useEffect(() => {
+    if (selectedId !== undefined && selectedRow === undefined) setSelectedId(undefined)
+  }, [selectedId, selectedRow])
+
+  // NOTE: every hook must live ABOVE the empty-state return — a hook below it
+  // would flip this component's hook count when the mirror empties and crash
+  // React with "Rendered fewer hooks than expected" (the #300 regression).
+  const kill = useCallback(async (row: TreeJob): Promise<void> => {
+    setKillingId(row.job.id)
+    setKillErrorId(undefined)
+    try {
+      await api.jobKill({ sessionId: row.ownerSessionId }, row.job.id)
+    } catch {
+      setKillErrorId(row.job.id)
+    } finally {
+      setKillingId(undefined)
+      setArmedId(undefined)
+    }
+  }, [])
+
+  if (rows.length === 0) return null
+
+  const countLabel = liveCount > 0
+    ? t('jobsCountRunning', { count: rows.length, running: liveCount })
+    : t('jobsCount', { count: rows.length })
+
+  return (
+    <>
+      <section className={css.jobs} aria-label={t('jobs')}>
+        <div className={css.jobsHeader}>
+          <span className={css.jobsTitle}>{t('jobs')}</span>
+          <span className={css.jobsCount}>{countLabel}</span>
+        </div>
+        <ul className={css.jobsList} aria-label={t('jobs')}>
+          {rows.map((row) => {
+            const { job } = row
+            const live = isJobLive(job)
+            const selected = selectedId === job.id
+            const armed = armedId === job.id
+            const killing = killingId === job.id
+            const killFailed = killErrorId === job.id
+            const elapsed = live
+              ? now - job.startedAt
+              : (job.finishedAt ?? job.startedAt) - job.startedAt
+            const secondary = [
+              ...(multiOwner ? [row.ownerTitle] : []),
+              jobStatusLabel(job.status, t),
+              ...(job.detail !== undefined && job.detail !== '' ? [job.detail] : []),
+              formatJobDuration(elapsed, t),
+            ].filter(Boolean).join(' · ')
+            return (
+              <li
+                key={job.id}
+                className={clsx(
+                  css.jobsRow,
+                  !live && css.jobsRowSettled,
+                  selected && css.jobsRowSelected,
+                )}
+              >
+                <button
+                  type="button"
+                  className={css.jobsRowMain}
+                  aria-pressed={selected}
+                  aria-label={`${job.label} ${secondary}`}
+                  onClick={() => { setSelectedId(selected ? undefined : job.id) }}
+                >
+                  <StateDot state={jobDotState(job.status)} className={css.jobsDot} />
+                  <span className={css.jobsContent}>
+                    <span className={css.jobsLabelLine}>
+                      <span className={css.jobsKind}>{job.kind}</span>
+                      <span className={css.jobsLabel} title={job.label}>{job.label}</span>
+                    </span>
+                    <span className={css.jobsSecondary}>{secondary}</span>
+                  </span>
+                </button>
+                {job.status === 'running' && (
+                  <button
+                    type="button"
+                    className={armed ? `${css.jobsKill} ${css.jobsKillArmed}` : css.jobsKill}
+                    aria-label={armed ? t('jobKillConfirm') : t('jobKill')}
+                    title={armed ? t('jobKillConfirm') : t('jobKill')}
+                    disabled={killing}
+                    onClick={(event) => {
+                      event.stopPropagation()
+                      if (armed) void kill(row)
+                      else setArmedId(job.id)
+                    }}
+                  >
+                    {armed ? t('jobKillConfirm') : <IconStopOutline16 size={12} />}
+                  </button>
+                )}
+                {killFailed && <span className={css.jobsKillError}>{t('jobKillError')}</span>}
+              </li>
+            )
+          })}
+        </ul>
+      </section>
+      {selectedRow !== undefined && (
+        <JobOutputPane
+          ownerSessionId={selectedRow.ownerSessionId}
+          job={selectedRow.job}
+          active={active}
+          onClose={() => { setSelectedId(undefined) }}
+        />
+      )}
+    </>
+  )
+}
+
 /**
  * The sidebar's Subagent topology page.
  * @param props - current session id, whether the page is actually visible
@@ -372,6 +662,7 @@ export function SubagentView(props: {
   const rootId = useMemo(() => rootAncestor(byId, sessionId), [byId, sessionId])
   const rootCatalog = rootId === undefined ? undefined : catalogs[rootId]
   const rootSummary = rootId === undefined ? undefined : byId[rootId]
+  const live = useSubagentLive(rootId, active)
 
   /** Catalog owners currently consuming live membership updates. */
   const observedRef = useRef(new Set<string>())
@@ -515,69 +806,77 @@ export function SubagentView(props: {
       <div
         ref={bodyRef}
         className={css.subagentBody}
-        role="tree"
-        aria-label={t('subagent')}
-        aria-busy={summaryBackedLoading || undefined}
         onKeyDown={onTreeKeyDown}
       >
-        {rootId !== undefined && rootSummary !== undefined && (
-          <div
-            role="treeitem"
-            tabIndex={0}
-            aria-level={0}
-            aria-label={`${rootSummary.displayTitle !== '' ? rootSummary.displayTitle : t('subagentMainAgent')} ${t('subagentMainAgent')}`}
-            aria-current={rootId === sessionId ? 'true' : undefined}
-            className={clsx(css.subagentRow, rootId === sessionId && css.subagentRowActive)}
-            onClick={openMain}
-            onKeyDown={(event) => {
-              if (event.key === 'Enter' || event.key === ' ') {
-                event.preventDefault()
-                event.stopPropagation()
-                openMain()
-              }
-            }}
-          >
-            <StateDot
-              state={rootSummary.running === true ? 'ongoing' : 'done'}
-              className={css.subagentDot}
-            />
-            <span className={css.subagentContent}>
-              <span className={css.subagentLabel}>
-                {rootSummary.displayTitle !== '' ? rootSummary.displayTitle : t('subagentMainAgent')}
-              </span>
-              <span className={css.subagentSecondary}>
-                {`${t('subagentMainAgent')} · ${rootSummary.running === true ? t('subagentRunning') : t('subagentInactive')}`}
-              </span>
-            </span>
-          </div>
-        )}
-        {rootId !== undefined && (
-          <div className={css.subagentChildren} role="group" aria-busy={summaryBackedLoading || undefined}>
-            {summaryBackedLoading && (
-              <CatalogLoadingRows parentSessionId={rootId} byId={byId} level={1} />
-            )}
-            {!summaryBackedLoading && (
-              <CatalogRows
-                parentSessionId={rootId}
-                catalog={rootCatalog}
-                catalogs={catalogs}
-                byId={byId}
-                level={1}
-                currentSessionId={sessionId}
-                active={active}
-                ctx={ctx}
-                openChild={openChild}
-                refresh={refresh}
+        <div
+          role="tree"
+          aria-label={t('subagent')}
+          aria-busy={summaryBackedLoading || undefined}
+        >
+          {rootId !== undefined && rootSummary !== undefined && (
+            <div
+              role="treeitem"
+              tabIndex={0}
+              aria-level={0}
+              aria-label={`${rootSummary.displayTitle !== '' ? rootSummary.displayTitle : t('subagentMainAgent')} ${t('subagentMainAgent')}`}
+              aria-current={rootId === sessionId ? 'true' : undefined}
+              className={clsx(css.subagentRow, rootId === sessionId && css.subagentRowActive)}
+              onClick={openMain}
+              onKeyDown={(event) => {
+                if (event.key === 'Enter' || event.key === ' ') {
+                  event.preventDefault()
+                  event.stopPropagation()
+                  openMain()
+                }
+              }}
+            >
+              <StateDot
+                state={rootSummary.running === true ? 'ongoing' : 'done'}
+                className={css.subagentDot}
               />
-            )}
-          </div>
-        )}
-        {readyEmpty && (
-          <div className={css.subagentEmpty}>
-            <div>{t('subagentEmpty')}</div>
-            <div className={css.subagentEmptyHint}>{t('subagentEmptyDesc')}</div>
-          </div>
-        )}
+              <span className={css.subagentContent}>
+                <span className={css.subagentLabel}>
+                  {rootSummary.displayTitle !== '' ? rootSummary.displayTitle : t('subagentMainAgent')}
+                </span>
+                <span className={css.subagentSecondary}>
+                  {`${t('subagentMainAgent')} · ${rootSummary.running === true ? t('subagentRunning') : t('subagentInactive')}`}
+                </span>
+              </span>
+            </div>
+          )}
+          {rootId !== undefined && (
+            <div className={css.subagentChildren} role="group" aria-busy={summaryBackedLoading || undefined}>
+              {summaryBackedLoading && (
+                <CatalogLoadingRows parentSessionId={rootId} byId={byId} level={1} />
+              )}
+              {!summaryBackedLoading && (
+                <CatalogRows
+                  parentSessionId={rootId}
+                  catalog={rootCatalog}
+                  catalogs={catalogs}
+                  byId={byId}
+                  level={1}
+                  currentSessionId={sessionId}
+                  live={live}
+                  openChild={openChild}
+                  refresh={refresh}
+                />
+              )}
+            </div>
+          )}
+          {readyEmpty && (
+            <div className={css.subagentEmpty}>
+              <div>{t('subagentEmpty')}</div>
+              <div className={css.subagentEmptyHint}>{t('subagentEmptyDesc')}</div>
+            </div>
+          )}
+        </div>
+        <JobsSection
+          byId={byId}
+          jobsBySession={list.jobsBySession}
+          rootId={rootId}
+          active={active}
+        />
       </div>
     </div>
   )

src/client/TabBar.tsx

@@ -5,7 +5,7 @@
  * terminal). Tabs are draggable; dropping onto another tab inserts before it,
  * dropping on the strip background appends to this pane.
  */
-import { useEffect, useState, type ReactNode } from 'react'
+import { useEffect, useRef, useState, type ReactNode } from 'react'
 import clsx from 'clsx'
 import {
   IconCloseFill14, IconPlusOutline16, Menu,
@@ -63,12 +63,68 @@ export function TabBar(props: {
   onDropTab: (payload: TabDragPayload, before: string | null) => void
   /** Icon resolver for tab labels (reads from the tab descriptor registry). */
   getTabIcon?: (tab: SidebarTab) => ReactNode
+  /** Badge resolver for tab labels (reads the descriptor's `badge`; the
+   *  resolver returns the rendered pill or null). */
+  getTabBadge?: (tab: SidebarTab) => ReactNode
 }) {
   const {
-    paneId, tabs, active, onActivate, onClose, onNewTab, newTabOptions, onDropTab, getTabIcon,
+    paneId, tabs, active, onActivate, onClose, onNewTab, newTabOptions, onDropTab, getTabIcon, getTabBadge,
   } = props
   const [menuOpen, setMenuOpen] = useState(false)
   const [dragOver, setDragOver] = useState(false)
+  const listRef = useRef<HTMLDivElement>(null)
+
+  // Middle-click close: the press target is recorded on middle mousedown
+  // (preventDefaulted to disarm Chrome's middle-click autoscroll — its
+  // indicator is inert here because the strip hides its scrollbar and only
+  // the wheel handler scrolls) and the close settles on the first middle
+  // mouseup OVER that same tab. Release-position semantics match VS Code
+  // (microsoft/vscode#101028) and what users expect from Chrome tabs
+  // (crbug/40679924): pressing on a tab and releasing elsewhere cancels the
+  // close. The browser dispatches auxclick to the nearest common ancestor of
+  // the press/release targets when they differ, so any drift, autoscroll
+  // scroll, or tab-list reflow between press and release would otherwise
+  // swallow the close; settling on the recorded press target at mouseup
+  // keeps release semantics without depending on auxclick delivery.
+  const onCloseRef = useRef(onClose)
+  const middlePressed = useRef<{ id: string; node: HTMLElement } | null>(null)
+  useEffect(() => {
+    onCloseRef.current = onClose
+  })
+  useEffect(() => {
+    const onMouseUp = (event: MouseEvent): void => {
+      if (event.button !== 1) return
+      const pressed = middlePressed.current
+      middlePressed.current = null
+      // Close only when the release lands on the pressed tab; a drag-away
+      // release cancels the press (one-shot per press).
+      if (pressed !== null && pressed.node.isConnected && pressed.node.contains(event.target as Node)) {
+        onCloseRef.current(pressed.id)
+      }
+    }
+    window.addEventListener('mouseup', onMouseUp)
+    return () => { window.removeEventListener('mouseup', onMouseUp) }
+  }, [])
+
+  // Wheel over the strip scrolls the tab row horizontally (a plain mouse
+  // wheel emits deltaY, which overflow-x alone never consumes). Bound as a
+  // native NON-passive listener: React registers onWheel passively at the
+  // root, where preventDefault() is a no-op. Modifier keys keep their native
+  // meaning (shift = horizontal scroll, ctrl/cmd = zoom), and a strip that
+  // does not overflow leaves the event alone so the page scrolls normally.
+  useEffect(() => {
+    const el = listRef.current
+    if (el === null) return
+    const onWheel = (event: WheelEvent): void => {
+      if (event.shiftKey || event.ctrlKey || event.metaKey || event.altKey) return
+      if (el.scrollWidth <= el.clientWidth) return
+      event.preventDefault()
+      const unit = event.deltaMode === 1 ? 16 : event.deltaMode === 2 ? el.clientWidth : 1
+      el.scrollLeft += (event.deltaX + event.deltaY) * unit
+    }
+    el.addEventListener('wheel', onWheel, { passive: false })
+    return () => { el.removeEventListener('wheel', onWheel) }
+  }, [])
 
   useEffect(() => {
     const clear = (): void => { setTabDragging(false); setDragOver(false) }
@@ -104,7 +160,7 @@ export function TabBar(props: {
         if (payload !== null) onDropTab(payload, null)
       }}
     >
-      <div className={css.tabList}>
+      <div ref={listRef} className={css.tabList}>
         {tabs.map(tab => (
           <div
             key={tab.id}
@@ -127,15 +183,20 @@ export function TabBar(props: {
               if (payload !== null) onDropTab(payload, tab.id)
             }}
             onClick={() => { onActivate(tab.id) }}
-            onAuxClick={(event) => {
-              // Middle-click closes the tab (and suppresses autoscroll).
+            onMouseDown={(event) => {
+              // Middle-click close: record the press target and disarm
+              // Chrome's middle-click autoscroll (its indicator is inert
+              // here — the strip scrolls via the wheel handler only). The
+              // close itself settles on the first middle mouseup over this
+              // same tab (window-level), keeping release semantics.
               if (event.button === 1) {
                 event.preventDefault()
-                onClose(tab.id)
+                middlePressed.current = { id: tab.id, node: event.currentTarget }
               }
             }}
           >
             {getTabIcon?.(tab) ?? null}
+            {getTabBadge?.(tab) ?? null}
             <span className={css.tabTitle}>{tab.title}</span>
             <button
               type="button"

src/client/TerminalView.tsx

@@ -8,30 +8,56 @@
  * retry, and repeated unreasoned failures surface the close code after three
  * attempts, so the banner never spins forever.
  *
+ * Three control frames shape the pty lifecycle on unmount:
+ * - `{type:'close'}` — the user closed the tab. The host kills the pty
+ *   immediately (quota released).
+ * - `{type:'park'}` — the user switched to another conversation. The tab is
+ *   still open in its session's persisted state but its view unmounted; the
+ *   host keeps the pty alive indefinitely (no grace countdown), so switching
+ *   back reattaches the same shell instead of respawning one.
+ * - bare socket drop (no frame) — page refresh, crash, plugin teardown, or a
+ *   same-session re-render. The host's reconnect grace keeps the shell alive
+ *   for a quick reconnect.
+ *
  * Two attach modes share one upgrade endpoint:
  * - `tabId` starting with `agent:` is an agent-owned terminal (created by
  *   the `terminal_create` tool). The uuid is the suffix after `agent:`; the
  *   view connects with `?uuid=...`. A close frame kills the pty (the agent's
  *   terminal closes when the user closes the tab); a bare socket drop
- *   leaves the pty alive (the agent owns the lifetime).
+ *   leaves the pty alive (the agent owns the lifetime) — agent terminals
+ *   never send park (their lifetime is already indefinite on bare drop).
  * - Any other `tabId` is a UI-tab terminal (the user created it from the +
  *   menu). The view connects with `?tab=...&sessionId=...&cwd=...`. A close
- *   frame schedules a 0-ms close; a bare socket drop gets the host's
- *   reconnect grace.
+ *   frame schedules a 0-ms close; a park frame marks the pty as parked; a
+ *   bare socket drop gets the host's reconnect grace.
  */
 import { useEffect, useRef, useState } from 'react'
-import { Terminal, type ITheme } from 'xterm'
+import { Terminal, type ITheme } from '@xterm/xterm'
 import { FitAddon } from '@xterm/addon-fit'
-import 'xterm/css/xterm.css'
+import { writeClipboard } from '@deepseek-ai/dsh-client-ui-primitives'
+import '@xterm/xterm/css/xterm.css'
 import { t } from './locales.ts'
-import type { SessionScope } from './api.ts'
+import { openWhenSized } from './open-when-sized.ts'
+import { api, type SessionScope, type TerminalDepsStatus } from './api.ts'
 import { agentUuidOf, isAgentTabId, type SidebarStore } from './state.ts'
-import { isDarkScheme, subscribeColorScheme, tokenValue } from './theme.ts'
+import { isDarkScheme, subscribeColorScheme, effectiveTokenValue, tokenValue } from './theme.ts'
+import { resolveTerminalFont } from './terminal-font.ts'
 import css from './sidebar.module.css'
 
 /** How many consecutive unreasoned failures before showing the error banner. */
 const FAILURE_LIMIT = 3
 
+/**
+ * The WS close-code-1011 reason the host sends when node-pty is unavailable
+ * (mirror of the host's PTY_DEPS_MISSING; the value is a wire contract, so
+ * the two sides keep the literal in lockstep). The view then fetches the
+ * full repair details from /sidebar/api/terminal.deps.
+ */
+const PTY_DEPS_MISSING = 'pty-deps-missing'
+
+/** The degraded-mode payload rendered by {@link TerminalDepsBanner}. */
+type TerminalDepsInfo = Extract<TerminalDepsStatus, { ok: false }>
+
 /**
  * Curated ANSI palettes for the terminal. The surface colors (background,
  * foreground, cursor, selection) ride the theme tokens so the terminal
@@ -59,8 +85,14 @@ const ANSI_LIGHT: Record<string, string> = {
 /** The xterm theme for the current scheme (surface from tokens, ANSI curated). */
 function xtermTheme(): ITheme {
   const dark = isDarkScheme()
-  const background = tokenValue('--dsw-alias-bg-base') || (dark ? '#111114' : '#ffffff')
-  const foreground = tokenValue('--dsw-alias-label-primary') || (dark ? '#e6e6e6' : '#1a1a1a')
+  // Skin systems set --dsw-alias-bg-base to `transparent` or translucent
+  // glass values (the dsh-web-ui skins use rgba 0.16–0.7); effectiveTokenValue
+  // treats those as unset below the opacity floor, so the opaque fallback
+  // engages and the terminal never renders see-through over the skin's
+  // backdrop (issue #90). Effectively opaque scoped surfaces (e.g. a skin's
+  // 0.96 porcelain) pass through — the skin still controls the terminal.
+  const background = effectiveTokenValue('--dsw-alias-bg-base') || (dark ? '#111114' : '#ffffff')
+  const foreground = effectiveTokenValue('--dsw-alias-label-primary') || (dark ? '#e6e6e6' : '#1a1a1a')
   return {
     background,
     foreground,
@@ -76,16 +108,20 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
   const hostRef = useRef<HTMLDivElement>(null)
   const [connected, setConnected] = useState(false)
   const [fatal, setFatal] = useState<string | null>(null)
+  const [depsFatal, setDepsFatal] = useState<TerminalDepsInfo | null>(null)
   const [lastUrl, setLastUrl] = useState<string | null>(null)
   const connectRef = useRef<(() => void) | null>(null)
 
   useEffect(() => {
     const host = hostRef.current
     if (host === null) return
+    // The custom font prefs (side card settings, terminal card) resolve at
+    // mount; store changes re-apply them live below.
+    const font = resolveTerminalFont(store.getPrefs(), tokenValue('--ds-font-family-code'))
     const term = new Terminal({
       cursorBlink: true,
-      fontSize: 13,
-      fontFamily: tokenValue('--ds-font-family-code') || '"SF Mono", Menlo, Consolas, "Liberation Mono", monospace',
+      fontSize: font.fontSize,
+      fontFamily: font.fontFamily,
       allowTransparency: true,
       convertEol: false,
       scrollback: 4000,
@@ -93,8 +129,6 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
     })
     const fit = new FitAddon()
     term.loadAddon(fit)
-    term.open(host)
-    fit.fit()
     // Re-theme in place when the app's scheme flips (tokens + palette).
     const applyTheme = (): void => {
       term.options.theme = xtermTheme()
@@ -148,6 +182,25 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
       }
       socket.onclose = (event) => {
         setConnected(false)
+        // node-pty dependency missing/broken (issue #140): the host closed
+        // with the short marker. Fetch the full repair details over HTTP —
+        // a WS close reason is capped at 123 bytes, too small for the
+        // pasteable command. A failed fetch falls back to the plain banner.
+        if (event.code === 1011 && event.reason === PTY_DEPS_MISSING) {
+          void api.terminalDeps().then((status) => {
+            if (status.ok) {
+              // The host recovered between the close and the fetch — the
+              // plain banner with a retry is the honest state.
+              setFatal(t('terminalDepsFailed'))
+              return
+            }
+            setFatal(null)
+            setDepsFatal(status)
+          }).catch(() => {
+            setFatal(t('terminalDepsFailed'))
+          })
+          return
+        }
         // A server-side refusal carries a close code + reason; retrying it
         // forever would only spin the banner, so surface it with a retry.
         if (event.code === 1011 && event.reason !== '') {
@@ -185,25 +238,79 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
     })
     observer.observe(host)
 
+    // Custom font prefs (the terminal card's secondary settings) apply LIVE:
+    // on any store change re-resolve and diff the two options, re-fitting
+    // when they moved (the grid dimensions may change with the font). The
+    // subscribe fires on every store change (tabs, panels…), so the diff is
+    // what keeps this cheap.
+    const fontSub = store.subscribe(() => {
+      const next = resolveTerminalFont(store.getPrefs(), tokenValue('--ds-font-family-code'))
+      if (next.fontFamily !== term.options.fontFamily || next.fontSize !== term.options.fontSize) {
+        term.options.fontFamily = next.fontFamily
+        term.options.fontSize = next.fontSize
+        try {
+          fit.fit()
+          sendResize()
+        } catch {
+          // The terminal may be mid-dispose; ignore.
+        }
+      }
+    })
+
+    // The terminal must not be opened in a zero-size container: xterm's
+    // renderer creation fails there and the next Viewport refresh crashes
+    // reading `.dimensions` off the undefined renderer (blank terminal on
+    // WKWebView when the bottom panel's expand slide leaves the host at
+    // height 0; any display:none-hidden ancestor does the same). Defer
+    // open+fit until the host has a real size — writes arriving meanwhile
+    // are buffered by xterm's WriteBuffer and render once open, and
+    // FitAddon.fit() is a safe no-op before open. sendResize() here covers
+    // the deferred path where the socket may already be open with the
+    // default 80x24 dims.
+    const cancelOpen = openWhenSized(host, () => {
+      try {
+        term.open(host)
+        fit.fit()
+        sendResize()
+      } catch (error) {
+        console.error('[dsh-better-sidebar] xterm open failed:', error)
+      }
+    })
+
     connect()
     return () => {
       closed = true
+      cancelOpen()
       window.clearTimeout(retry)
       observer.disconnect()
+      fontSub()
       schemeSub()
       inputSub.dispose()
-      // The close frame tells the host the owning tab is GONE (immediate
-      // pty release). A bare unmount — conversation switch, re-render,
-      // page unload — leaves the tab open, so the socket drop alone hands
-      // the process to the host's reconnect grace: switching back or
-      // refreshing reattaches the SAME shell instead of respawning one.
-      // (The host respawns on its own when the authoritative cwd changed.)
-      // Agent terminals follow the same rule: a close frame kills the pty
-      // (the user closed the sidebar tab); a bare socket drop leaves it
-      // alive (the agent owns the lifetime).
-      if (!store.tabOpen(scope.sessionId, tabId)
+      // Three unmount cases, distinguished by the store's tab/open state and
+      // the active session id:
+      // 1. The tab was closed by the user (NOT in its session's state): send
+      //    `{type:'close'}` — the host releases the pty immediately.
+      // 2. The user switched to another conversation (the tab IS still open
+      //    in scope.sessionId's state, but the active session is now a
+      //    different one): send `{type:'park'}` — the host keeps the pty
+      //    alive indefinitely (no grace countdown), so switching back
+      //    reattaches the SAME shell. Without this, the bare socket drop
+      //    would start the 30s reconnect-grace countdown and kill the shell
+      //    while the user is still actively working in the other session.
+      // 3. A same-session unmount (page refresh, crash, plugin teardown, a
+      //    re-render that re-mounts the view): bare socket drop — the host's
+      //    reconnect grace keeps the shell alive for a quick reconnect.
+      // Agent terminals follow the close-frame rule; their lifetime is owned
+      // by the agent, so a bare drop (case 3) already leaves them alive
+      // indefinitely — no park frame needed.
+      const tabStillOpen = store.tabOpen(scope.sessionId, tabId)
+      const sessionSwitched = store.getSnapshot().sessionId !== scope.sessionId
+      if (!tabStillOpen
         && socket !== null && socket.readyState === WebSocket.OPEN) {
         socket.send(JSON.stringify({ type: 'close' }))
+      } else if (tabStillOpen && sessionSwitched && !isAgentTabId(tabId)
+        && socket !== null && socket.readyState === WebSocket.OPEN) {
+        socket.send(JSON.stringify({ type: 'park' }))
       }
       socket?.close()
       term.dispose()
@@ -213,6 +320,9 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
 
   return (
     <div className={css.terminalWrap}>
+      {depsFatal !== null && (
+        <TerminalDepsBanner deps={depsFatal} onRetry={() => { setDepsFatal(null); connectRef.current?.() }} />
+      )}
       {fatal !== null && (
         <div className={css.terminalBanner}>
           {t('terminalError')}: {fatal}
@@ -226,8 +336,48 @@ export function TerminalView(props: { scope: SessionScope; tabId: string; store:
           </button>
         </div>
       )}
-      {fatal === null && !connected && <div className={css.terminalBanner}>{t('disconnected')}</div>}
+      {fatal === null && depsFatal === null && !connected && <div className={css.terminalBanner}>{t('disconnected')}</div>}
       <div ref={hostRef} className={css.terminal} />
     </div>
   )
 }
+
+/**
+ * The node-pty dependency failure banner (issue #140): explains that the
+ * terminal's native dependency failed to load and shows the PASTEABLE repair
+ * command (bash / cmd / PowerShell) with a copy button — the user pastes it
+ * into a terminal where their DSH profile lives and runs it, then retries.
+ * Extracted as a standalone component for direct testing.
+ */
+export function TerminalDepsBanner(props: { deps: TerminalDepsInfo; onRetry: () => void }) {
+  const { deps, onRetry } = props
+  const [copied, setCopied] = useState(false)
+  const copy = async (): Promise<void> => {
+    const written = await writeClipboard(deps.command)
+    if (written) {
+      setCopied(true)
+      window.setTimeout(() => setCopied(false), 2000)
+    }
+  }
+  return (
+    <div className={css.terminalDepsBanner}>
+      <div className={css.terminalDepsTitle}>{t('terminalDepsFailed')}</div>
+      <div className={css.terminalDepsHint}>
+        {t('terminalDepsHint')}
+        {deps.profile !== null ? t('terminalDepsProfile', { profile: deps.profile }) : ''}
+      </div>
+      <div className={css.terminalDepsCommandRow}>
+        <pre className={css.terminalRepairCommand}>{deps.command}</pre>
+        <button type="button" className={css.terminalRetry} onClick={() => { void copy() }} aria-label={t('copy')}>
+          {copied ? t('copied') : t('copy')}
+        </button>
+      </div>
+      {deps.note !== undefined && <div className={css.terminalDepsNote}>{deps.note}</div>}
+      <div className={css.terminalDepsActions}>
+        <button type="button" className={css.terminalRetry} onClick={onRetry}>
+          {t('terminalRetry')}
+        </button>
+      </div>
+    </div>
+  )
+}

src/client/TextEditor.tsx

@@ -7,9 +7,15 @@
  * so this component never fetches or dispatches — it only edits.
  *
  * The toolbar (mode toggle / dirty dot / save / status) renders as its own
- * row below the host's title bar, VSCode-style.
+ * row below the host's title bar, VSCode-style — unless the host passes
+ * `toolbar: 'host'` (the merged editor-explorer mode), in which case this
+ * component skips the row and reports state + registers commands through
+ * the FileViewerProps toolbar callbacks so the host's path-input header
+ * renders the controls instead.
  */
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useMemo, useRef, useState } from 'react'
+import type { ComponentType } from 'react'
+import { createPortal } from 'react-dom'
 import clsx from 'clsx'
 import { EditorState } from '@codemirror/state'
 import { EditorView as CodeMirrorView, keymap, lineNumbers } from '@codemirror/view'
@@ -20,13 +26,34 @@ import { languageForPath } from './lang.ts'
 import { cmSurfaceTheme, CmThemeCompartment } from './cm-themes.ts'
 import { isDarkScheme, subscribeColorScheme } from './theme.ts'
 import { SandboxStatusBar } from './SandboxStatusBar.tsx'
+import { appendToDraft } from './conversation-draft.ts'
+import { buildSelectionInsert, linesOfSelection } from './selection-payload.ts'
+import { lazyChunkComponent } from './lazy-chunk.tsx'
+import { splitMermaidBlocks, type MermaidMarkdownProps } from './mermaid-blocks.ts'
 import { t } from './locales.ts'
-import type { FileViewerProps } from './service.ts'
+import type { EditorToolbarState, FileViewerProps } from './service.ts'
 import css from './sidebar.module.css'
 
 /** Previewable files (rendered output vs source editing). */
 type ViewMode = 'preview' | 'edit'
 
+/** The floating "add to conversation" action: payload + viewport anchor. */
+interface SelectionPopup {
+  insert: string
+  left: number
+  top: number
+}
+
+/**
+ * The chunk-resident markdown preview renderer (mermaid lazy chunk): one
+ * MarkdownText pass over the whole source, with rendered mermaid fences
+ * swapped for diagrams. Module-level `pick` keeps the load effect stable.
+ */
+const LazyMermaidMarkdown = lazyChunkComponent<MermaidMarkdownProps>(
+  'mermaid',
+  (mod) => mod.MermaidMarkdown as ComponentType<MermaidMarkdownProps> | undefined,
+)
+
 /**
  * The sandbox tokens of the HTML preview iframe. NO allow-same-origin (the
  * preview must stay in an opaque origin — with the route's own origin it
@@ -37,7 +64,7 @@ type ViewMode = 'preview' | 'edit'
 export const HTML_IFRAME_SANDBOX = 'allow-scripts allow-popups allow-downloads allow-modals'
 
 export function TextEditor(props: FileViewerProps) {
-  const { scope, path, viewerId, content, truncated } = props
+  const { ctx, scope, path, viewerId, content, truncated } = props
   const [mode, setMode] = useState<ViewMode>('preview')
   /** The editor's current text (null while clean); preview renders this. */
   const [draft, setDraft] = useState<string | null>(null)
@@ -50,6 +77,36 @@ export function TextEditor(props: FileViewerProps) {
   const themeCompRef = useRef<CmThemeCompartment | null>(null)
   /** The app's resolved color scheme; the editor re-themes in place on flips. */
   const [dark, setDark] = useState(() => isDarkScheme())
+  /** The floating "add to conversation" popup (viewport-anchored; null = hidden). */
+  const [popup, setPopup] = useState<SelectionPopup | null>(null)
+  /** Live mirror of the popup state for click-time reads (no re-render race). */
+  const popupRef = useRef<SelectionPopup | null>(null)
+  /** The markdown preview container (selection-containment + line lookup). */
+  const mdRef = useRef<HTMLDivElement>(null)
+
+  const hidePopup = (): void => {
+    popupRef.current = null
+    setPopup(null)
+  }
+
+  /** Anchor the popup above the selection center; clamp inside the viewport. */
+  const showPopup = (insert: string, left: number, top: number): void => {
+    const next: SelectionPopup = {
+      insert,
+      left: Math.min(Math.max(left, 80), window.innerWidth - 80),
+      top,
+    }
+    popupRef.current = next
+    setPopup(next)
+  }
+
+  /** The popup button's click: insert the stored payload into the draft. */
+  const commitPopup = (): void => {
+    const current = popupRef.current
+    if (current === null) return
+    appendToDraft(ctx, scope.sessionId, current.insert)
+    hidePopup()
+  }
 
   useEffect(() => subscribeColorScheme(() => { setDark(isDarkScheme()) }), [])
 
@@ -59,6 +116,7 @@ export function TextEditor(props: FileViewerProps) {
     setDraft(null)
     setDirty(false)
     setSaveState('idle')
+    hidePopup()
   }, [content])
 
   // Create the CodeMirror editor once the content is loaded. The view owns
@@ -100,6 +158,49 @@ export function TextEditor(props: FileViewerProps) {
           ...defaultKeymap,
           ...historyKeymap,
         ]),
+        // Selection popup (the code and markdown editors): a non-empty
+        // selection anchors the floating "add to conversation" button above
+        // its head. Scrolling (geometry/viewport change) or losing focus
+        // hides it; typing collapses the selection and hides it too.
+        ...(viewerId === 'code' || viewerId === 'markdown' ? [
+          CodeMirrorView.updateListener.of((update) => {
+            if (update.geometryChanged || update.viewportChanged) {
+              hidePopup()
+              return
+            }
+            if (!update.view.hasFocus) {
+              hidePopup()
+              return
+            }
+            if (!(update.selectionSet || update.docChanged || update.focusChanged)) return
+            const sel = update.state.selection.main
+            if (sel.empty) {
+              hidePopup()
+              return
+            }
+            const text = update.state.sliceDoc(sel.from, sel.to)
+            if (text.trim() === '') {
+              hidePopup()
+              return
+            }
+            // Page coordinates (the document root may scroll); the popup is
+            // position:fixed, so convert to viewport coordinates.
+            const rect = update.view.coordsAtPos(sel.head)
+            if (rect === null) {
+              hidePopup()
+              return
+            }
+            const doc = update.state.doc
+            showPopup(
+              buildSelectionInsert(path, scope.cwd, {
+                start: doc.lineAt(sel.from).number,
+                end: doc.lineAt(sel.to).number,
+              }, text),
+              rect.left - window.scrollX + (rect.right - rect.left) / 2,
+              rect.top - window.scrollY,
+            )
+          }),
+        ] : []),
       ],
     })
     const view = new CodeMirrorView({ state, parent: host })
@@ -124,8 +225,10 @@ export function TextEditor(props: FileViewerProps) {
   }, [dark])
 
   // The editor may have been display:none while previewing; re-measure when
-  // it becomes visible again (CodeMirror sizes itself on reveal).
+  // it becomes visible again (CodeMirror sizes itself on reveal). A mode
+  // flip also invalidates any anchored selection popup.
   useEffect(() => {
+    hidePopup()
     if (mode === 'edit') viewRef.current?.requestMeasure()
   }, [mode])
 
@@ -147,6 +250,52 @@ export function TextEditor(props: FileViewerProps) {
 
   const markdown = viewerId === 'markdown'
   const html = viewerId === 'html'
+  /** The markdown source the preview renders (draft wins over saved content). */
+  const mdText = draft ?? content ?? ''
+  /** md/mermaid block split for the preview (mermaid fences lift out). Split
+   *  only in preview mode: edit-mode keystrokes must not re-scan the source. */
+  const mdBlocks = useMemo(
+    () => (markdown && mode === 'preview' ? splitMermaidBlocks(mdText) : []),
+    [markdown, mode, mdText],
+  )
+  const hasMermaid = useMemo(
+    () => mdBlocks.some(block => block.kind === 'mermaid'),
+    [mdBlocks],
+  )
+  const codeLabels = { copyLabel: t('copy'), copiedLabel: t('copied') }
+
+  /**
+   * Selection popup for the markdown preview: a mouse-up inside the preview
+   * container anchors the floating "add to conversation" button above the
+   * selection. Line numbers come from a best-effort reverse-search of the
+   * selected text in the source ({@link linesOfSelection} — an ambiguous or
+   * missing hit omits them). The button's own mousedown preventDefaults so
+   * the selection survives until the click commits.
+   */
+  const handlePreviewMouseUp = (): void => {
+    const sel = window.getSelection()
+    if (sel === null || sel.isCollapsed || sel.anchorNode === null || sel.focusNode === null) {
+      hidePopup()
+      return
+    }
+    const host = mdRef.current
+    if (host === null || !host.contains(sel.anchorNode) || !host.contains(sel.focusNode)) {
+      hidePopup()
+      return
+    }
+    const text = sel.toString()
+    if (text.trim() === '') {
+      hidePopup()
+      return
+    }
+    const rect = sel.getRangeAt(0).getBoundingClientRect()
+    const lines = linesOfSelection(mdText, text)
+    showPopup(
+      buildSelectionInsert(path, scope.cwd, lines ?? undefined, text),
+      rect.left + rect.width / 2,
+      rect.top,
+    )
+  }
   const editable = content !== undefined
   const saveLabel = saveState === 'saving' ? t('loading') : saveState === 'saved' ? t('saved') : saveState === 'failed' ? t('saveFailed') : ''
   // Per-feature sandbox escape hatch: the global side card setting (warned)
@@ -159,8 +308,31 @@ export function TextEditor(props: FileViewerProps) {
   const [localUnlock, setLocalUnlock] = useState(() => props.store?.getPrefs().htmlViewerDefaultUnsafe === true)
   const htmlNoSandbox = props.store?.getPrefs().htmlViewerNoSandbox === true || localUnlock
 
+  // Host-toolbar mode (the merged editor header renders the controls): skip
+  // the own toolbar row, report the state after every relevant render (the
+  // JSON key guards redundant calls), and register the commands on mount.
+  const hostToolbar = props.toolbar === 'host'
+  const lastToolbarRef = useRef('')
+  useEffect(() => {
+    if (!hostToolbar) return
+    const state: EditorToolbarState = { modes: markdown || html, mode, dirty, editable, saveState }
+    const key = JSON.stringify(state)
+    if (lastToolbarRef.current === key) return
+    lastToolbarRef.current = key
+    props.onToolbarState?.(state)
+  })
+  useEffect(() => {
+    if (!hostToolbar) return
+    // `save` reads live refs only, and `setMode` is the stable state setter —
+    // registering this render's closures is safe for the mount's lifetime.
+    props.onToolbarControls?.({ setMode, save })
+    return () => { props.onToolbarControls?.(null) }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [hostToolbar])
+
   return (
     <>
+      {!hostToolbar && (
       <div className={css.editorHeader}>
         {(markdown || html) && (
           <div className={css.editorModeToggle}>
@@ -194,6 +366,7 @@ export function TextEditor(props: FileViewerProps) {
         )}
         {saveLabel !== '' && <span className={clsx(css.editorStatus, saveState === 'failed' && css.editorStatusError)}>{saveLabel}</span>}
       </div>
+      )}
       {editable && (
         <>
           {truncated === true && mode === 'edit' && <div className={css.editorBanner}>{t('truncation')}</div>}
@@ -204,8 +377,23 @@ export function TextEditor(props: FileViewerProps) {
         </>
       )}
       {markdown && mode === 'preview' && (
-        <div className={css.editorMd}>
-          <MarkdownText text={draft ?? content ?? ''} />
+        <div
+          className={css.editorMd}
+          ref={mdRef}
+          onMouseUp={handlePreviewMouseUp}
+          onScroll={hidePopup}
+        >
+          {/* The fence copy-button labels must come from this plugin's own
+              dictionary: the DSH MarkdownText/CodeBlock are cordis-free and
+              fall back to hardcoded Chinese otherwise (same pattern as the
+              chat's AssistantMarkdown). Render-time t() keeps them following
+              the active locale on live switches. Mermaid fences hand the
+              whole document to the mermaid lazy chunk (single markdown
+              parse; cross-fence references/footnotes stay intact); files
+              without one render exactly as before. */}
+          {hasMermaid
+            ? <LazyMermaidMarkdown text={mdText} codeLabels={codeLabels} />
+            : <MarkdownText text={mdText} codeLabels={codeLabels} />}
         </div>
       )}
       {html && mode === 'preview' && (
@@ -231,6 +419,20 @@ export function TextEditor(props: FileViewerProps) {
           />
         </>
       )}
+      {popup !== null && createPortal(
+        <button
+          type="button"
+          className={css.selectionPopup}
+          style={{ left: popup.left, top: popup.top }}
+          // Keep the selection (and CodeMirror focus) alive until the click
+          // commits — without this the popup unmounts before click lands.
+          onMouseDown={(event) => { event.preventDefault() }}
+          onClick={commitPopup}
+        >
+          {t('addToConversation')}
+        </button>,
+        document.body,
+      )}
     </>
   )
 }

src/client/TreePanel.tsx

@@ -0,0 +1,260 @@
+/**
+ * The files window's tree surface: a global file-name search box on top
+ * (300ms debounce; an in-flight search is aborted by the next keystroke)
+ * over either the shared controlled FileTree (empty query) or the flat
+ * result list (relative paths; click opens through the caller's mode-aware
+ * open). Owns its refresh tick: the icon next to the search input clears
+ * the tree cache. EditorHost docks it as the tab's right panel (wrapped in
+ * a drag-resize handle) and provides the file context-menu open escapes.
+ *
+ * Uploads (header pickers, the tree's drag-drop and "upload here" menu)
+ * all funnel through here: one session at a time, shown in a full-window
+ * progress overlay with cancel, followed by a tree refresh and a one-line
+ * hint under the search row (success fades, failures and cancels stay).
+ * OS file drags are shielded at the panel host (see Sidebar.tsx), so a
+ * drop over the file window uploads here and never reaches DSH's chat
+ * intake.
+ */
+import { useEffect, useRef, useState, type InputHTMLAttributes } from 'react'
+import clsx from 'clsx'
+import { IconFolderOpen16, IconRefreshOutline16 } from '@deepseek-ai/dsh-client-ui-primitives'
+import { api } from './api.ts'
+import { FileTree } from './FileTree.tsx'
+import { IconUploadOutline16 } from './icons.tsx'
+import { t } from './locales.ts'
+import { resolveSidebarPath } from './produced-files.ts'
+import { UploadOverlay } from './UploadOverlay.tsx'
+import {
+  summarizeResults, uploadHintText, uploadItemsFromFiles, uploadToDir,
+  UPLOAD_HINT_MS, type UploadItem,
+} from './upload.ts'
+import css from './sidebar.module.css'
+
+/** One in-flight upload session (the overlay's progress source). */
+interface UploadSession {
+  dir: string
+  done: number
+  total: number
+  /** Relative path of the file being uploaded ('' when none is in flight). */
+  current: string
+  controller: AbortController
+}
+
+export function TreePanel(props: {
+  sessionId: string
+  cwd: string | undefined
+  expanded: string[]
+  onToggle: (path: string) => void
+  onOpenFile: (path: string) => void
+  /** File context-menu "open in a new tab" (passed through to FileTree). */
+  onOpenFileNewTab?: (path: string) => void
+  /** File context-menu "open to the side" (passed through to FileTree). */
+  onOpenFileSide?: (path: string) => void
+  onReferenceFile: (path: string) => void
+  /** Full-window presentation: the panel fills its host instead of docking
+   *  at a fixed width. */
+  full?: boolean
+}) {
+  const { sessionId, cwd, expanded, onToggle, onOpenFile, onOpenFileNewTab, onOpenFileSide, onReferenceFile, full } = props
+  const [query, setQuery] = useState('')
+  const [results, setResults] = useState<{ matches: string[]; truncated: boolean } | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const [refreshTick, setRefreshTick] = useState(0)
+  /** One-line upload status under the search row ('' hides the hint). */
+  const [uploadStatus, setUploadStatus] = useState('')
+  /** Whether the status line is a failure/cancel (error color, stays visible). */
+  const [uploadFailed, setUploadFailed] = useState(false)
+  /** The in-flight upload session (null → no overlay, buttons enabled). */
+  const [upload, setUpload] = useState<UploadSession | null>(null)
+  /** True between the cancel click and the session settling (button disabled). */
+  const [cancelling, setCancelling] = useState(false)
+  /** Set by cancelUpload; the settle path shows 'upload cancelled' instead of
+   *  summarizing the partial results. */
+  const cancelledRef = useRef(false)
+  const fileInputRef = useRef<HTMLInputElement>(null)
+  const folderInputRef = useRef<HTMLInputElement>(null)
+
+  /** Start one upload session into `dir` (absolute, inside the workspace). */
+  const startUpload = (dir: string, items: UploadItem[]): void => {
+    if (items.length === 0 || cwd === undefined || upload !== null) return
+    cancelledRef.current = false
+    const controller = new AbortController()
+    setUploadFailed(false)
+    setUploadStatus(uploadHintText(0, items.length, '', dir, t))
+    setUpload({ dir, done: 0, total: items.length, current: '', controller })
+    void uploadToDir({ sessionId, cwd }, dir, items, (done, total, current) => {
+      if (current !== '') setUploadStatus(uploadHintText(done, total, current, dir, t))
+      setUpload(session => session === null ? session : { ...session, done, total, current })
+    }, controller.signal).then((results) => {
+      setUpload(null)
+      setCancelling(false)
+      // Reload the tree whatever the outcome: files may have landed before a
+      // cancel, and failures leave whatever did succeed visible.
+      setRefreshTick(tick => tick + 1)
+      if (cancelledRef.current) {
+        setUploadStatus(t('uploadCancelled'))
+        setUploadFailed(true)
+        return
+      }
+      const status = summarizeResults(results, t)
+      setUploadStatus(status)
+      setUploadFailed(results.some(result => !result.ok))
+      // Success messages are transient; failures stay until the next action.
+      if (results.every(result => result.ok)) {
+        window.setTimeout(() => {
+          setUploadStatus(current => current === status ? '' : current)
+        }, UPLOAD_HINT_MS)
+      }
+    })
+  }
+
+  /** Cancel the in-flight upload (aborts the request; the host drops its temp). */
+  const cancelUpload = (): void => {
+    if (upload === null || cancelling) return
+    cancelledRef.current = true
+    setCancelling(true)
+    upload.controller.abort()
+  }
+
+  const folderInputProps = { webkitdirectory: '' } as InputHTMLAttributes<HTMLInputElement>
+
+  const needle = query.trim()
+  useEffect(() => {
+    if (needle === '') {
+      setResults(null)
+      setError(null)
+      return
+    }
+    const controller = new AbortController()
+    const timer = window.setTimeout(() => {
+      api.fsSearch({ sessionId, cwd }, needle, controller.signal).then((found) => {
+        setResults(found)
+        setError(null)
+      }).catch((failure: unknown) => {
+        if (controller.signal.aborted) return
+        setResults(null)
+        setError(failure instanceof Error ? failure.message : String(failure))
+      })
+    }, 300)
+    return () => {
+      window.clearTimeout(timer)
+      controller.abort()
+    }
+  }, [sessionId, cwd, needle])
+
+  const busy = upload !== null
+
+  return (
+    <div className={clsx(css.editorTreePanel, full === true && css.editorTreePanelFull)}>
+      <div className={css.editorTreeSearch}>
+        <input
+          className={css.editorSearchInput}
+          value={query}
+          placeholder={t('editorSearchPlaceholder')}
+          spellCheck={false}
+          onChange={(event) => { setQuery(event.target.value) }}
+        />
+        <button
+          type="button"
+          className={css.iconButton}
+          aria-label={t('refresh')}
+          title={t('refresh')}
+          onClick={() => { setRefreshTick(tick => tick + 1) }}
+        >
+          <IconRefreshOutline16 size={14} />
+        </button>
+        <button
+          type="button"
+          className={css.iconButton}
+          aria-label={t('uploadFiles')}
+          title={t('uploadFiles')}
+          disabled={busy}
+          onClick={() => { fileInputRef.current?.click() }}
+        >
+          <IconUploadOutline16 size={14} />
+        </button>
+        <button
+          type="button"
+          className={css.iconButton}
+          aria-label={t('uploadFolder')}
+          title={t('uploadFolder')}
+          disabled={busy}
+          onClick={() => { folderInputRef.current?.click() }}
+        >
+          <IconFolderOpen16 size={14} />
+        </button>
+        <input
+          ref={fileInputRef}
+          type="file"
+          multiple
+          style={{ display: 'none' }}
+          onChange={(event) => {
+            if (cwd !== undefined) startUpload(cwd, uploadItemsFromFiles(event.target.files ?? []))
+            event.target.value = ''
+          }}
+        />
+        <input
+          ref={folderInputRef}
+          type="file"
+          multiple
+          {...folderInputProps}
+          style={{ display: 'none' }}
+          onChange={(event) => {
+            if (cwd !== undefined) startUpload(cwd, uploadItemsFromFiles(event.target.files ?? []))
+            event.target.value = ''
+          }}
+        />
+      </div>
+      {uploadStatus !== '' && (
+        <div className={clsx(css.editorSearchHint, uploadFailed && css.editorError)} title={uploadStatus}>{uploadStatus}</div>
+      )}
+      {needle === '' ? (
+        <FileTree
+          sessionId={sessionId}
+          cwd={cwd}
+          expanded={expanded}
+          onToggle={onToggle}
+          onOpenFile={onOpenFile}
+          onOpenFileNewTab={onOpenFileNewTab}
+          onOpenFileSide={onOpenFileSide}
+          onReferenceFile={onReferenceFile}
+          refreshTick={refreshTick}
+          onUploadRequest={startUpload}
+          busy={busy}
+        />
+      ) : (
+        <div className={css.explorerBody}>
+          {error !== null && <div className={clsx(css.editorSearchHint, css.editorError)}>{error}</div>}
+          {error === null && results === null && <div className={css.editorSearchHint}>{t('loading')}</div>}
+          {error === null && results !== null && results.matches.length === 0 && (
+            <div className={css.editorSearchHint}>{t('editorSearchNoResults')}</div>
+          )}
+          {error === null && results !== null && results.matches.map(rel => (
+            <button
+              key={rel}
+              type="button"
+              className={css.editorSearchResult}
+              title={rel}
+              onClick={() => { onOpenFile(resolveSidebarPath(cwd, rel)) }}
+            >
+              {rel}
+            </button>
+          ))}
+          {error === null && results?.truncated === true && (
+            <div className={css.editorSearchHint}>{t('editorSearchTruncated')}</div>
+          )}
+        </div>
+      )}
+      {upload !== null && (
+        <UploadOverlay
+          dir={upload.dir}
+          done={upload.done}
+          total={upload.total}
+          current={upload.current}
+          onCancel={cancelUpload}
+          cancelling={cancelling}
+        />
+      )}
+    </div>
+  )
+}

src/client/UploadOverlay.tsx

@@ -0,0 +1,62 @@
+/**
+ * Full-window upload progress over the files tree: a blurred scrim (same mask
+ * token as the repo's Modal primitive) with a card showing the target
+ * directory, file-level progress, and a cancel button. Esc cancels too —
+ * clicking the scrim does not, so a stray click can never abort an upload.
+ * Rendered inside TreePanel (absolute inset-0), so it covers only the file
+ * window and never the conversation column.
+ */
+import { useEffect, type ReactNode } from 'react'
+import { IconUploadOutline16 } from './icons.tsx'
+import { t } from './locales.ts'
+import { uploadHintText } from './upload.ts'
+import css from './sidebar.module.css'
+
+export function UploadOverlay(props: {
+  /** Absolute upload directory (the session workspace or a tree directory). */
+  dir: string
+  done: number
+  total: number
+  /** Relative path of the file being uploaded ('' when none is in flight). */
+  current: string
+  onCancel: () => void
+  /** True while cancellation is in flight (disables the cancel button). */
+  cancelling?: boolean
+}): ReactNode {
+  const { dir, done, total, current, onCancel, cancelling } = props
+  // Esc cancels (MermaidModal-style native listener; the overlay is not a
+  // focus-trapped dialog, so a window listener is the honest scope).
+  useEffect(() => {
+    const onKey = (event: KeyboardEvent): void => {
+      if (event.key === 'Escape') onCancel()
+    }
+    window.addEventListener('keydown', onKey)
+    return () => { window.removeEventListener('keydown', onKey) }
+  }, [onCancel])
+
+  const percent = total === 0 ? 0 : Math.min(100, Math.round((done / total) * 100))
+  return (
+    <div className={css.uploadOverlay} role="dialog" aria-modal="true" aria-label={t('uploadingTo', { dir })}>
+      <div className={css.uploadOverlayCard}>
+        <div className={css.uploadOverlayTitle} title={dir}>
+          <IconUploadOutline16 size={16} />
+          <span>{t('uploadingTo', { dir })}</span>
+        </div>
+        <div
+          className={css.uploadOverlayProgress}
+          role="progressbar"
+          aria-valuemin={0}
+          aria-valuemax={total}
+          aria-valuenow={done}
+          aria-valuetext={t('uploadProgress', { done, total, name: current })}
+        >
+          <div className={css.uploadOverlayProgressFill} style={{ width: `${percent}%` }} />
+        </div>
+        <div className={css.uploadOverlayStatus}>{uploadHintText(done, total, current, dir, t)}</div>
+        <button type="button" className={css.uploadOverlayCancel} disabled={cancelling} onClick={onCancel}>
+          {t('cancel')}
+        </button>
+      </div>
+    </div>
+  )
+}

src/client/add-plugin-modal.tsx

@@ -0,0 +1,199 @@
+/**
+ * The "add plugin" modals (Side card settings → the dashed cards at the
+ * end of the 侧边栏内容 / 文件预览 grids): declare that the sidebar's
+ * extension points — tab pages and file previewers — are open to plugins
+ * (registered through `ctx.betterSidebar`), point at the GitHub topic page
+ * for discovery, and show the repo's recommended plugin catalog of the
+ * matching kind (name / url / description / install script).
+ *
+ * Per entry there are two actions:
+ * - 「跳转」opens the plugin's repo in a REAL new browser tab (window.open
+ *   — a button, so the sidebar link takeover cannot reroute it);
+ * - 「安装」only COPIES the install script to the clipboard (writeClipboard)
+ *   with a transient "已复制" feedback on the button — the user pastes and
+ *   runs it wherever they manage their DSH profile. No terminal is opened,
+ *   nothing is closed, nothing can fail outward.
+ *
+ * The body is extracted as {@link PluginListBody} so tests render it
+ * directly — the Modal primitive runs hooks unconditionally, so an open
+ * Modal must never be renderToString'd (same rule as the settingsFor popup
+ * in SideCardSection); the modal itself mounts only while open.
+ */
+import { useState, type ReactNode } from 'react'
+import { Modal, writeClipboard } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { BetterSidebarService } from './service.ts'
+import { PLUGIN_TOPIC_URL, type PluginEntry } from './plugins-shared.ts'
+import { builtinTabPlugins } from './plugins-tabs.ts'
+import { builtinViewerPlugins } from './plugins-viewers.ts'
+import { t } from './locales.ts'
+import css from './SideCardSection.module.css'
+
+/** Which extension point the modal is adding a plugin for. */
+export type PluginKind = 'tab' | 'viewer'
+
+/** The catalog of one kind (kept in two repo files: plugins-tabs.ts /
+ *  plugins-viewers.ts). */
+function catalogOf(kind: PluginKind): readonly PluginEntry[] {
+  return kind === 'tab' ? builtinTabPlugins : builtinViewerPlugins
+}
+
+/** How long the "已复制" feedback stays on the copy button. */
+const COPIED_FEEDBACK_MS = 1500
+
+/** The modal body: the GitHub topic button + the recommended plugin list
+ *  with per-entry jump/copy buttons (extracted for direct testing). */
+export function PluginListBody(props: { service: BetterSidebarService; kind: PluginKind }) {
+  const { service, kind } = props
+  // Which entry's copy button currently shows the "已复制" feedback.
+  const [copiedId, setCopiedId] = useState<string | null>(null)
+  // Live catalog filter (name / id / description). A free-text search keeps
+  // the list usable once the catalogs grow beyond a handful of entries:
+  // every keystroke narrows the rendered rows, so a long catalog never
+  // becomes a wall of scrolling.
+  const [query, setQuery] = useState('')
+
+  const catalog = catalogOf(kind)
+  const needle = query.trim().toLowerCase()
+  const matches = (entry: PluginEntry): boolean => {
+    if (needle === '') return true
+    const description = typeof entry.description === 'function' ? entry.description() : entry.description
+    return entry.name.toLowerCase().includes(needle)
+      || entry.id.toLowerCase().includes(needle)
+      || description.toLowerCase().includes(needle)
+  }
+  const filtered = catalog.filter(matches)
+  // Group by the optional category (stable order: category order of first
+  // appearance, uncategorized entries last under the plain list).
+  const groups = new Map<string | undefined, PluginEntry[]>()
+  for (const entry of filtered) {
+    const key = entry.category === undefined ? undefined : (typeof entry.category === 'function' ? entry.category() : entry.category)
+    const list = groups.get(key)
+    if (list === undefined) groups.set(key, [entry])
+    else list.push(entry)
+  }
+
+  /** Copy the entry's install script to the clipboard and flash the button's
+   *  "已复制" label for a moment. The feedback ONLY appears after a
+   *  successful write — when the clipboard is unavailable or denied
+   *  (writeClipboard resolves false) nothing is shown, so the user is never
+   *  told to paste a command that was not placed on the clipboard. Never
+   *  closes anything, never throws outward. */
+  const copy = async (entry: PluginEntry): Promise<void> => {
+    const written = await writeClipboard(entry.install)
+    if (!written) return
+    setCopiedId(entry.id)
+    window.setTimeout(() => {
+      setCopiedId(current => (current === entry.id ? null : current))
+    }, COPIED_FEEDBACK_MS)
+  }
+
+  /** Open the plugin's repo in a REAL new browser tab (window.open — a
+   *  button, so the sidebar link takeover cannot reroute it). */
+  const jump = (entry: PluginEntry): void => {
+    window.open(entry.url, '_blank', 'noopener')
+  }
+
+  /** One catalog row (extracted so the group render stays flat). */
+  const renderEntry = (entry: PluginEntry): ReactNode => (
+    <div key={entry.id} className={css.pluginEntry}>
+      <div className={css.pluginEntryHead}>
+        {/* The name is a BUTTON on the same window.open path as the
+            jump button: as an anchor it would be caught by the
+            document-capture link takeover (which ignores
+            target=_blank) and land in the sidebar browser. */}
+        <button
+          type="button"
+          className={css.pluginName}
+          aria-label={`${t('openPlugin')}: ${entry.name}`}
+          onClick={() => { jump(entry) }}
+        >
+          {entry.name}
+        </button>
+        <span className={css.pluginEntryActions}>
+          <button
+            type="button"
+            className={css.pluginJumpBtn}
+            aria-label={`${t('openPlugin')}: ${entry.name}`}
+            onClick={() => { jump(entry) }}
+          >
+            {t('openPlugin')}
+          </button>
+          <button
+            type="button"
+            className={css.pluginCopyBtn}
+            aria-label={`${t('copyInstall')}: ${entry.name}`}
+            onClick={() => { copy(entry) }}
+          >
+            {copiedId === entry.id ? t('copied') : t('copy')}
+          </button>
+        </span>
+      </div>
+      <div className={css.pluginDesc}>
+        {typeof entry.description === 'function' ? entry.description() : entry.description}
+      </div>
+      <code className={css.pluginInstall}>{entry.install}</code>
+    </div>
+  )
+
+  return (
+    <div className={css.pluginList}>
+      <button
+        type="button"
+        className={css.pluginTopicBtn}
+        onClick={() => { window.open(PLUGIN_TOPIC_URL, '_blank', 'noopener') }}
+      >
+        {t('addPluginsBrowseMore')}
+      </button>
+      <input
+        type="search"
+        className={css.pluginSearch}
+        placeholder={t('addPluginsSearch')}
+        aria-label={t('addPluginsSearch')}
+        value={query}
+        onChange={event => { setQuery(event.currentTarget.value) }}
+      />
+      <div className={css.groupHeading}>
+        <span>{t('addPluginsRecommended')}</span>
+        <span className={css.count}>{filtered.length}</span>
+      </div>
+      {catalog.length === 0 ? (
+        <div className={css.pluginEmpty}>{t('addPluginsEmpty')}</div>
+      ) : filtered.length === 0 ? (
+        <div className={css.pluginEmpty}>{t('addPluginsNoMatch')}</div>
+      ) : (
+        <div className={css.pluginEntries}>
+          {[...groups.entries()].map(([category, entries]) => (
+            <div key={category ?? '\u0000'} className={css.pluginGroup}>
+              {category !== undefined && (
+                <div className={css.pluginGroupHeading}>{category}</div>
+              )}
+              {entries.map(renderEntry)}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}
+
+/** The modal itself (mounted only while open — see the module comment). */
+export function AddPluginModal(props: { service: BetterSidebarService; onClose: () => void; kind: PluginKind }) {
+  const { service, onClose, kind } = props
+  return (
+    <Modal
+      open
+      onClose={onClose}
+      title={kind === 'tab' ? t('addPluginsTabCard') : t('addPluginsViewerCard')}
+      description={kind === 'tab' ? t('addPluginsTabDesc') : t('addPluginsViewerDesc')}
+      closeLabel={t('close')}
+      className={css.pluginModal}
+      footer={(
+        <button type="button" className={css.done} onClick={onClose}>
+          {t('settingsDone')}
+        </button>
+      )}
+    >
+      <PluginListBody service={service} kind={kind} />
+    </Modal>
+  )
+}

src/client/api.ts

@@ -7,6 +7,8 @@
  * request). Failures surface as {@link SidebarApiError} with the wire code.
  */
 import { encodeHtmlUrl } from '../html-route.ts'
+import type { LastActivity } from '../subagent-activity.ts'
+import type { SidechatThreadInfo } from '../sidechat-core.ts'
 import type { BrowserProbeResult } from './browser.ts'
 
 /** One wire failure. */
@@ -25,6 +27,10 @@ export interface FsEntry {
   path: string
   isDir: boolean
   hidden: boolean
+  /** Whether the row is a symlink; `isDir` then describes the link's target. */
+  isSymlink: boolean
+  /** For symlinks: the target is missing or unreadable (stat failed). */
+  broken: boolean
 }
 
 /** Git status entry (host git shape). */
@@ -60,6 +66,39 @@ export interface FsTextResult { kind: 'text'; content: string; truncated: boolea
  *  `head` carries the first bytes (base64) for viewer detect sniffing. */
 export interface FsBinaryResult { kind: 'binary'; size: number; truncated: boolean; head: string }
 
+/**
+ * One jobs.output response: the output the MODEL has read so far for the
+ * job (replayed from the owner session's event log — the model's
+ * job_output cursor is never touched, so the pane can never steal the
+ * agent's bytes). `read` is false until the model actually called
+ * job_output for the job.
+ */
+export interface JobOutputResult {
+  text: string
+  /** True when the host capped the text at its output limit. */
+  truncated: boolean
+  /** Whether the model has read the job at least once. */
+  read: boolean
+}
+
+/** The `subagents.live` response: running child id → latest activity. */
+export type SubagentLiveResult = { live: Record<string, LastActivity> }
+
+/** Terminal dependency status (mirror of the host's depsStatus; issue #140). */
+export type TerminalDepsStatus =
+  | { ok: true }
+  | {
+    ok: false
+    /** The require-time error message (module missing, native binding broken…). */
+    cause: string
+    /** The pasteable repair command (terminal/cmd). */
+    command: string
+    /** The detected profile name (null when undetected → the command defaults to web). */
+    profile: string | null
+    /** Optional supplementary hint (fallback command only). */
+    note?: string
+  }
+
 async function call<T>(method: string, payload: Record<string, unknown>, signal?: AbortSignal): Promise<T> {
   let response: Response
   try {
@@ -83,6 +122,45 @@ async function call<T>(method: string, payload: Record<string, unknown>, signal?
   return parsed.value as T
 }
 
+/**
+ * Upload one file to the sidebar's raw upload route: the File goes straight
+ * into the POST body (no JSON/base64 re-encoding — the host streams it into
+ * the workspace). Failure surfaces as {@link SidebarApiError} with the wire
+ * code, exactly like every `/sidebar/api` call. An aborted `signal` rejects
+ * with the DOMException as-is (the caller decides whether that is an error).
+ */
+async function fetchUpload<T>(
+  scope: SessionScope,
+  dir: string,
+  relativePath: string,
+  body: Blob,
+  signal?: AbortSignal,
+): Promise<T> {
+  const params = new URLSearchParams({ sessionId: scope.sessionId, dir, relativePath })
+  if (scope.cwd !== undefined && scope.cwd !== '') params.set('cwd', scope.cwd)
+  let response: Response
+  try {
+    response = await fetch(`/sidebar/upload?${params.toString()}`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/octet-stream' },
+      body,
+      signal,
+    })
+  } catch (error) {
+    if (error instanceof DOMException && error.name === 'AbortError') throw error
+    throw new SidebarApiError('network', error instanceof Error ? error.message : String(error))
+  }
+  const parsed: { ok?: boolean; value?: unknown; error?: { code?: string; message?: string } } | null
+    = await response.json().catch(() => null)
+  if (!response.ok || parsed === null || parsed.ok !== true || parsed.value === undefined) {
+    throw new SidebarApiError(
+      parsed?.error?.code ?? 'http',
+      parsed?.error?.message ?? `HTTP ${response.status}`,
+    )
+  }
+  return parsed.value as T
+}
+
 /** One request's session scope: the conversation id plus its cwd when known. */
 export interface SessionScope {
   sessionId: string
@@ -101,10 +179,18 @@ export const api = {
     call<{ sessionId: string; cwd: string; root: string; parent: string | null }>('session.cwd', scopePayload(scope, {}), signal),
   fsTree: (scope: SessionScope, path: string, signal?: AbortSignal) =>
     call<{ path: string; entries: FsEntry[]; truncated: boolean }>('fs.tree', scopePayload(scope, { path }), signal),
+  /** Global recursive file-name search rooted at the session cwd (the editor
+   *  side panel's search box); matches are cwd-relative '/'-separated paths. */
+  fsSearch: (scope: SessionScope, query: string, signal?: AbortSignal) =>
+    call<{ matches: string[]; truncated: boolean }>('fs.search', scopePayload(scope, { query }), signal),
   fsRead: (scope: SessionScope, path: string, signal?: AbortSignal) =>
     call<FsTextResult | FsBinaryResult>('fs.read', scopePayload(scope, { path }), signal),
   fsWrite: (scope: SessionScope, path: string, content: string) =>
     call<{ ok: true }>('fs.write', scopePayload(scope, { path, content })),
+  /** Upload one file's raw bytes into `dir` (keeps the folder tree via
+   *  `relativePath`); the host streams it under the session workspace. */
+  uploadFile: (scope: SessionScope, dir: string, relativePath: string, body: Blob, signal?: AbortSignal) =>
+    fetchUpload<{ path: string; size: number }>(scope, dir, relativePath, body, signal),
   gitStatus: (scope: SessionScope, signal?: AbortSignal) =>
     call<GitStatusResult>('git.status', scopePayload(scope, {}), signal),
   gitDiff: (scope: SessionScope, path: string | undefined, staged: boolean, signal?: AbortSignal) =>
@@ -145,9 +231,54 @@ export const api = {
   /** Release an agent terminal by uuid (tab closed while WS was down). */
   agentPtyClose: (uuid: string) =>
     call<{ ok: true }>('agent-pty.close', { uuid }),
+  /** Terminal dependency status (issue #140): after a WS close 1011 with
+   *  reason `pty-deps-missing` the view fetches the full repair details here
+   *  (the close reason itself is capped at 123 bytes). */
+  terminalDeps: () =>
+    call<TerminalDepsStatus>('terminal.deps', {}),
+  /**
+   * The output the model has read so far for one background job (replayed
+   * from the owner session's event log — never the model's job_output
+   * cursor). The scope MUST be the job's OWNER session.
+   */
+  jobOutput: (scope: SessionScope, id: string, signal?: AbortSignal) =>
+    call<JobOutputResult>('jobs.output', scopePayload(scope, { id }), signal),
+  /** Request cancellation of one background job (live jobs flip to stopping). */
+  jobKill: (scope: SessionScope, id: string, reason?: string) =>
+    call<{ ok: true; outcome: 'requested' | 'already-finished' }>('jobs.kill', scopePayload(scope, {
+      id,
+      ...(reason !== undefined ? { reason } : {}),
+    })),
+  /**
+   * One batch live-preview fetch for the whole Subagent tree. The payload is
+   * the already-resolved topology ROOT (not a session scope); the host
+   * enumerates descendants once and folds running children's activity.
+   */
+  subagentsLive: (rootSessionId: string, signal?: AbortSignal) =>
+    call<SubagentLiveResult>('subagents.live', { rootSessionId }, signal),
+  /** Create a Side Chat thread: a child session seeded with the parent's
+   *  full log up to now. Empty question = immediate create (Codex-style):
+   *  the thread opens empty, the first prompt carries the boundary. */
+  sidechatStart: (sessionId: string, question?: string) =>
+    call<{ childId: string }>('sidechat.start', { sessionId, question: question ?? '' }),
+  /** Deliver one follow-up message to a Side Chat thread. */
+  sidechatPrompt: (childId: string, text: string) =>
+    call<{ accepted: true }>('sidechat.prompt', { childId, text }),
+  /** Abort a Side Chat thread's running turn (queued work is preserved). */
+  sidechatCancel: (childId: string) =>
+    call<{ accepted: true }>('sidechat.cancel', { childId }),
+  /** Release a Side Chat thread's live agent (history stays persisted). */
+  sidechatDispose: (childId: string) =>
+    call<{ accepted: true }>('sidechat.dispose', { childId }),
+  /** Live state + agent identity (provider/model/preset) of a thread. */
+  sidechatInfo: (childId: string) =>
+    call<SidechatThreadInfo>('sidechat.info', { childId }),
+  /** The effective terminal shell and its display name (plugin-global). */
+  shellGet: () =>
+    call<{ shell: string; name: string }>('shell.get', {}),
   /** Read the side card preferences (plugin-global, no session scope). */
   settingsGet: () =>
-    call<{ value?: unknown; revision?: number }>('settings.get', {}),
+    call<{ value?: unknown; revision?: number; externalDisable?: boolean }>('settings.get', {}),
   /** Merge a patch into the side card preferences (revision-guarded). */
   settingsUpdate: (patch: Record<string, unknown>, expectedRevision?: number) =>
     call<{ value?: unknown; revision?: number }>('settings.update', {
@@ -179,9 +310,14 @@ function fileUrl(scope: SessionScope, path: string, download: boolean): string {
   return `/sidebar/file?${params.toString()}`
 }
 
-/** Absolute URL of the HTML preview route (see html-route.ts): the path is
- *  fully encoded so the previewed page's relative assets resolve back into
- *  the same route with the session scope intact. */
+/**
+ * Absolute URL of the HTML preview route (see html-route.ts): the path is
+ * fully encoded so the previewed page's relative assets resolve back into
+ * the same route with the session scope intact. The UNC marker is
+ * platform-neutral — the host's requireAbsolute resolves the decoded
+ * forward-slash `//server/share/...` form on both win32 and POSIX — so no
+ * client-side platform signal is needed.
+ */
 export function htmlUrl(scope: SessionScope, path: string): string {
   return encodeHtmlUrl(scope.sessionId, path)
 }

src/client/breakpoints.ts

@@ -0,0 +1,51 @@
+/**
+ * Narrow-viewport ("mobile") breakpoint for the sidebar. Width-based, shared
+ * by the layout logic (JS) and the style gates (CSS). The CSS side pairs
+ * with this file via `@media (max-width: 767px)` rules (sidebar.module.css)
+ * — 767px ≡ widths below NARROW_MAX_WIDTH, documented at both ends.
+ *
+ * "Real narrow" on purpose: the mobile layout (one full-screen drawer, the
+ * bottom panel's tabs merged into the right sidebar) is a phone / portrait
+ * tablet experience. The value is deliberately NOT aligned to the DSH app
+ * shell's own 1024px breakpoint — 1024px windows (small laptops, split
+ * panes) keep the desktop two-panel layout.
+ */
+import { useEffect, useState } from 'react'
+
+/** Viewport widths strictly below this are "mobile" (paired CSS: max-width: 767px). */
+export const NARROW_MAX_WIDTH = 768
+
+/** Whether a viewport width is narrow (mobile). */
+export function isNarrowWidth(width: number): boolean {
+  return width < NARROW_MAX_WIDTH
+}
+
+/**
+ * Live narrow-viewport flag for components. Reads `window.innerWidth` and
+ * re-measures on resize (rAF-throttled, the repo's existing drag pattern).
+ * Deliberately avoids `matchMedia` (jsdom does not implement it) — the
+ * resize listener is equally exact for a breakpoint that never changes
+ * while the page is open.
+ */
+export function useNarrowViewport(): boolean {
+  const [narrow, setNarrow] = useState(
+    () => typeof window !== 'undefined' && isNarrowWidth(window.innerWidth),
+  )
+  useEffect(() => {
+    if (typeof window === 'undefined') return
+    let frame: number | null = null
+    const measure = (): void => {
+      frame = null
+      setNarrow(isNarrowWidth(window.innerWidth))
+    }
+    const onResize = (): void => {
+      if (frame === null) frame = requestAnimationFrame(measure)
+    }
+    window.addEventListener('resize', onResize)
+    return () => {
+      window.removeEventListener('resize', onResize)
+      if (frame !== null) cancelAnimationFrame(frame)
+    }
+  }, [])
+  return narrow
+}

src/client/builtins/index.ts

@@ -8,7 +8,7 @@
  */
 import type { Context } from '../../context-types.ts'
 import type { BetterSidebarService } from '../service.ts'
-import { builtinTabs } from './tabs.tsx'
+import { builtinTabs, type BuiltinTabOptions } from './tabs.tsx'
 import { builtinViewers } from './viewers.tsx'
 
 /**
@@ -17,9 +17,13 @@ import { builtinViewers } from './viewers.tsx'
  * disposal). The `ctx` is threaded into tab descriptors that need it
  * (EditorHost reads `ctx.betterSidebar` for file-viewer matching).
  */
-export function registerBuiltins(ctx: Context, service: BetterSidebarService): () => void {
+export function registerBuiltins(
+  ctx: Context,
+  service: BetterSidebarService,
+  options: BuiltinTabOptions = {},
+): () => void {
   const disposers: (() => void)[] = []
-  for (const tab of builtinTabs(ctx)) {
+  for (const tab of builtinTabs(ctx, options)) {
     disposers.push(service.registerTab(tab))
   }
   for (const viewer of builtinViewers()) {

src/client/builtins/tabs.tsx

@@ -1,29 +1,73 @@
 /**
  * The 7 built-in tab descriptors: the plugin registers its own pages
- * (explorer / git / terminal / browser / subagent / editor / diff) through
+ * (editor / git / subagent / sidechat / terminal / browser / diff) through
  * the same {@link BetterSidebarService} external plugins use — eating its
  * own dogfood. The terminal descriptor owns its quota (`TERMINAL_LIMIT`)
- * and mints `terminal:<n>` ids through `createTab`; the browser mints
- * `browser:<n>` the same way (no quota).
+ * and mints `terminal:<uuid>` ids through `createTab`; the browser mints
+ * `browser:<n>` the same way (no quota). The editor IS the files window
+ * (the old standalone explorer merged into it).
  */
-import { IconBranchOutline16, IconCodeOutline16, IconFolderOpen16, IconThinkOutline16 } from '@deepseek-ai/dsh-client-ui-primitives'
+import { IconBranchOutline16, IconCodeOutline16, IconFolderOpen16, IconNewChatOutline16, IconPanelLeftOutline16, IconThinkOutline16 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { Context } from '../../context-types.ts'
 import { allLeaves, isAgentTabId, type SidebarState } from '../state.ts'
 import { t } from '../locales.ts'
 import { openSidebarFile } from '../intercept.tsx'
-import { ExplorerView } from '../ExplorerView.tsx'
 import { EditorHost } from '../EditorHost.tsx'
-import { TerminalView } from '../TerminalView.tsx'
+import { lazyChunkComponent } from '../lazy-chunk.tsx'
 import { GitView } from '../GitView.tsx'
 import { DiffTab } from '../DiffTab.tsx'
 import { SubagentView } from '../SubagentView.tsx'
+import { consumeSidechatSeed, SideChatView, sidechatThreadIdOf } from '../SideChatView.tsx'
+import { api } from '../api.ts'
 import { BrowserView } from '../BrowserView.tsx'
 import { IconTerminalOutline16, IconDiffOutline16, IconGlobeOutline16 } from '../icons.tsx'
+import { TERMINAL_FONT_SIZE_MAX, TERMINAL_FONT_SIZE_MIN } from '../../prefs-shared.ts'
+import type { ComponentType } from 'react'
+import type { SessionScope } from '../api.ts'
+import type { SidebarStore } from '../state.ts'
 import type { TabDescriptor } from '../service.ts'
 
+/**
+ * Lazy wrapper over the terminal view: xterm (and its stylesheet) is fetched
+ * only when a terminal tab is first opened (see chunk-loader.ts). The
+ * wrapper keeps the descriptor contract `(props) => ReactNode` — Sidebar
+ * calls it as a plain function.
+ *
+ * TerminalView's props are { scope, tabId, store } — `tabId` is NOT part of
+ * TabComponentProps (it carries `tab: SidebarTab` instead), so the
+ * descriptor maps it explicitly; a bare pass-through would leave tabId
+ * undefined and TerminalView's isAgentTabId(tabId) would crash on
+ * `undefined.startsWith` (regression-pinned in tests/lazy-chunk.spec.tsx).
+ */
+const LazyTerminal = lazyChunkComponent<TerminalViewProps>(
+  'terminal',
+  (mod) => mod.TerminalView as ComponentType<TerminalViewProps> | undefined,
+)
+
+/** The terminal view's props (mirror of TerminalView's own signature). */
+interface TerminalViewProps {
+  scope: SessionScope
+  tabId: string
+  store: SidebarStore
+}
+
 /** How many UI-owned terminals may be open at once (agent-owned ones are uncapped). */
 export const TERMINAL_LIMIT = 3
 
+/** Optional per-registration builtin behavior (currently terminal title). */
+export interface BuiltinTabOptions {
+  /** Returns the display title for newly opened terminal tabs. */
+  terminalTitle?: () => string
+}
+
+/** A client-side uuid for terminal tab identity (not shown in the UI). */
+function terminalUuid(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID()
+  }
+  return `t${Date.now().toString(36)}${Math.random().toString(36).slice(2)}`
+}
+
 /** Count UI-owned terminals (agent:` tabs excluded — they are the model's). */
 function uiTerminalCount(state: SidebarState): number {
   return allLeaves(state.splits)
@@ -31,33 +75,52 @@ function uiTerminalCount(state: SidebarState): number {
     .filter(tab => tab.type === 'terminal' && !isAgentTabId(tab.id)).length
 }
 
-/** The 7 built-in tab descriptors. */
-export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
+/** The 6 built-in tab descriptors. */
+export function builtinTabs(ctx: Context, options: BuiltinTabOptions = {}): readonly TabDescriptor[] {
   return [
     {
       id: 'editor',
-      title: () => t('editor'),
-      icon: (size: number) => <IconCodeOutline16 size={size} />,
-      order: -1,
-      hidden: true,
-      dedupeKey: (tab) => tab.path,
-      component: ({ ctx, store, scope, tab }) => (
-        <EditorHost ctx={ctx} store={store} scope={scope} path={tab.path ?? ''} title={tab.title} />
-      ),
-    },
-    {
-      id: 'explorer',
-      title: () => t('explorer'),
+      // The single files window: an editor tab with no path IS the file
+      // explorer (empty hint + docked tree); with a path it previews/edits
+      // the file. Visible in the + menu in the explorer's old slot.
+      title: () => t('files'),
       icon: (size: number) => <IconFolderOpen16 size={size} />,
       order: 10,
-      single: true,
-      component: ({ ctx, store, scope, expanded, onToggleDir, onReferenceFile }) => (
-        <ExplorerView
-          sessionId={scope.sessionId}
-          cwd={scope.cwd}
+      hidden: false,
+      dedupeKey: (tab) => tab.path,
+      // Declarative settings: the file-open behavior picker (in-place switch
+      // vs per-path windows) renders as an iconed select row under the
+      // editor card's gear in the Side card settings page.
+      settings: {
+        toggles: [{
+          key: 'editorExplorer',
+          type: 'select',
+          title: () => t('editorExplorer'),
+          desc: () => t('editorExplorerDesc'),
+          options: [
+            {
+              value: true,
+              icon: (size: number) => <IconPanelLeftOutline16 size={size} />,
+              title: () => t('editorExplorerMerged'),
+              desc: () => t('editorExplorerMergedDesc'),
+            },
+            {
+              value: false,
+              icon: (size: number) => <IconCodeOutline16 size={size} />,
+              title: () => t('editorExplorerSplit'),
+              desc: () => t('editorExplorerSplitDesc'),
+            },
+          ],
+        }],
+      },
+      component: ({ ctx, store, scope, tab, expanded, onToggleDir, onReferenceFile }) => (
+        <EditorHost
+          ctx={ctx}
+          store={store}
+          scope={scope}
+          tab={tab}
           expanded={expanded ?? []}
-          onToggle={onToggleDir ?? (() => { /* no-op */ })}
-          onOpenFile={(path) => { openSidebarFile(ctx, store, scope.sessionId, path) }}
+          onToggleDir={onToggleDir ?? (() => { /* no-op */ })}
           onReferenceFile={onReferenceFile ?? (() => { /* no-op */ })}
         />
       ),
@@ -82,13 +145,17 @@ export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
       icon: (size: number) => <IconThinkOutline16 size={size} />,
       order: 30,
       single: true,
-      // Declarative settings: the auto-open switch renders under this row in
-      // the Side card settings page (the Subagent page's own related setting).
+      // Declarative settings: the auto-open switches render under this row in
+      // the Side card settings page (the Jobs page's own related settings).
       settings: {
         toggles: [{
           key: 'autoOpenSubagent',
           title: () => t('settingsSubagentTitle'),
           desc: () => t('settingsSubagentDesc'),
+        }, {
+          key: 'autoOpenJobs',
+          title: () => t('settingsJobsTitle'),
+          desc: () => t('settingsJobsDesc'),
         }],
       },
       component: ({ ctx, scope, visible, onSubagentJump }) => (
@@ -100,16 +167,62 @@ export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
         />
       ),
     },
+    {
+      id: 'sidechat',
+      title: () => t('sideChat'),
+      icon: (size: number) => <IconNewChatOutline16 size={size} />,
+      order: 35,
+      // Codex-style: EVERY side conversation is its own tab. A plain open
+      // mints a fresh tab flagged `autoCreate` (the view creates the EMPTY
+      // thread on mount); a thread switch from the header menu parks the
+      // target id for a deterministic `sidechat:<threadId>` reattach tab.
+      createTab: () => {
+        const threadId = consumeSidechatSeed()
+        if (threadId !== undefined) {
+          return {
+            tab: {
+              id: `sidechat:${threadId}`,
+              type: 'sidechat',
+              title: t('sideChat'),
+              meta: { threadId },
+            },
+          }
+        }
+        return {
+          tab: {
+            id: `sidechat:new-${crypto.randomUUID()}`,
+            type: 'sidechat',
+            title: t('sideChatUntitled'),
+            meta: { autoCreate: true },
+          },
+        }
+      },
+      // One tab per thread: an already-open thread focuses instead of
+      // duplicating; unbound fresh tabs never dedupe (each mints its own).
+      dedupeKey: (tab) => sidechatThreadIdOf(tab),
+      // Closing the tab releases the thread's live agent; the session and
+      // its history stay persisted (reopen from any thread's header menu).
+      onClose: (tab) => {
+        const threadId = sidechatThreadIdOf(tab)
+        if (threadId !== undefined) {
+          void api.sidechatDispose(threadId).catch(() => {})
+        }
+      },
+      component: ({ ctx, scope, tab, visible }) => (
+        <SideChatView ctx={ctx} scope={scope} tab={tab} visible={visible} />
+      ),
+    },
     {
       id: 'terminal',
       title: () => t('terminal'),
       icon: (size: number) => <IconTerminalOutline16 size={size} />,
       order: 40,
       available: (_ctx, _scope, state) => uiTerminalCount(state) < TERMINAL_LIMIT,
-      // Declarative settings: the model-facing terminal tools switch and the
-      // bottom-panel first-expansion auto-terminal switch render under this
-      // row in the Side card settings page (the Terminal page's own related
-      // settings; the host gates the toolset on the tools one independently).
+      // Declarative settings: the model-facing terminal tools switch, the
+      // bottom-panel first-expansion auto-terminal switch, and the custom
+      // font family/size rows render under this card in the Side card
+      // settings page (the host gates the toolset on the tools one
+      // independently; the font rows apply live to every terminal).
       settings: {
         toggles: [{
           key: 'agentTerminalTools',
@@ -119,6 +232,32 @@ export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
           key: 'bottomPanelAutoTerminal',
           title: () => t('settingsBottomTerminalTitle'),
           desc: () => t('settingsBottomTerminalDesc'),
+        }, {
+          key: 'terminalShell',
+          type: 'text',
+          title: () => t('settingsShellTitle'),
+          desc: () => t('settingsShellDesc'),
+          placeholder: t('settingsShellPlaceholder'),
+        }, {
+          key: 'terminalShellArgs',
+          type: 'text',
+          title: () => t('settingsShellArgsTitle'),
+          desc: () => t('settingsShellArgsDesc'),
+          placeholder: t('settingsShellArgsPlaceholder'),
+        }, {
+          key: 'terminalFontFamily',
+          type: 'text',
+          title: () => t('settingsFontFamilyTitle'),
+          desc: () => t('settingsFontFamilyDesc'),
+          placeholder: t('settingsFontFamilyPlaceholder'),
+        }, {
+          key: 'terminalFontSize',
+          type: 'number',
+          title: () => t('settingsFontSizeTitle'),
+          desc: () => t('settingsFontSizeDesc'),
+          min: TERMINAL_FONT_SIZE_MIN,
+          max: TERMINAL_FONT_SIZE_MAX,
+          unit: 'px',
         }],
       },
       createTab: (state) => {
@@ -126,25 +265,26 @@ export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
         if (count >= TERMINAL_LIMIT) return null
         return {
           tab: {
-            id: `terminal:${state.nextTerminal}`,
+            id: `terminal:${terminalUuid()}`,
             type: 'terminal',
-            title: `${t('terminal')} ${state.nextTerminal}`,
+            title: options.terminalTitle?.() ?? t('terminal'),
           },
+          // Keep the legacy counter advancing for compatibility with older
+          // persisted states; new ids no longer use it.
           patch: { nextTerminal: state.nextTerminal + 1 },
         }
       },
-      component: ({ scope, tab, store }) => (
-        <TerminalView scope={scope} tabId={tab.id} store={store} />
-      ),
+      component: ({ tab, scope, store }) => <LazyTerminal scope={scope} store={store} tabId={tab.id} />,
     },
     {
       id: 'browser',
       title: () => t('browser'),
       icon: (size: number) => <IconGlobeOutline16 size={size} />,
       order: 50,
-      // Declarative settings: the sandbox escape hatch and the link
-      // takeover render under this tab's row in the Side card settings
-      // page (the sandbox one is warned on).
+      // Declarative settings: the sandbox escape hatch, the link-takeover
+      // MASTER switch, and the per-protocol takeover switches (http on /
+      // https off by default) render under this tab's row in the Side card
+      // settings page (the sandbox one is warned on).
       settings: {
         toggles: [{
           key: 'browserNoSandbox',
@@ -154,6 +294,14 @@ export function builtinTabs(ctx: Context): readonly TabDescriptor[] {
           key: 'browserInterceptLinks',
           title: () => t('settingsBrowserLinksTitle'),
           desc: () => t('settingsBrowserLinksDesc'),
+        }, {
+          key: 'browserInterceptHttp',
+          title: () => t('settingsBrowserHttpTitle'),
+          desc: () => t('settingsBrowserHttpDesc'),
+        }, {
+          key: 'browserInterceptHttps',
+          title: () => t('settingsBrowserHttpsTitle'),
+          desc: () => t('settingsBrowserHttpsDesc'),
         }],
       },
       createTab: (state) => ({

src/client/builtins/viewers.tsx

@@ -1,35 +1,51 @@
 /**
- * The 9 built-in file viewer descriptors: every preview surface is a
- * registered viewer (image / pdf / docx / xlsx / pptx / markdown / html /
- * code / binary-download), exactly like external plugins register theirs.
+ * The 6 built-in file viewer descriptors: every preview surface is a
+ * registered viewer (image / pdf / markdown / html / code /
+ * binary-download), exactly like external plugins register theirs. Office
+ * previews (.docx / .xlsx / .pptx) are NOT built in anymore — they moved to
+ * the recommended office plugin (see plugins-viewers.ts), which registers
+ * the same ids through this service.
+ *
  * The `binary-download` viewer sniffs NUL bytes via `detect` for unknown
- * binaries and serves doc/xls/ppt by extension; `code` is the catch-all
- * (`exts: []`, lowest priority) that claims any file no other viewer did.
+ * binaries and serves legacy doc/xls/ppt by extension; `code` is the
+ * catch-all (`exts: []`, lowest priority) that claims any file no other
+ * viewer did.
+ *
+ * The heavy viewers (the CodeMirror-backed markdown/html/code) render
+ * through {@link lazyChunkComponent} wrappers — their libraries are fetched
+ * only when such a file is first opened (see chunk-loader.ts). The
+ * descriptor metadata (id/exts/priority/detect) is identical either way,
+ * so matching semantics and external-plugin overrides are unaffected; the
+ * `component` wrapper keeps the descriptor contract `(props) => ReactNode`.
  *
  * Every viewer carries the declarative settings-surface fields — `title`
  * and `icon` — so the Side card settings page can render the enable/disable
  * inventory without hardcoding (eating our own dogfood).
  */
 import { IconCodeOutline16, IconDownloadOutline16 } from '@deepseek-ai/dsh-client-ui-primitives'
-import { DocxView, XlsxView } from '../office-view.tsx'
+import { lazyChunkComponent } from '../lazy-chunk.tsx'
 import { PdfView } from '../PdfView.tsx'
-import { PptxView } from '../PptxView.tsx'
-import { TextEditor } from '../TextEditor.tsx'
 import { BinaryDownload } from '../binary-download.tsx'
 import {
   IconImageOutline16,
   IconMarkdownOutline16,
   IconPdfOutline16,
-  IconDocxOutline16,
-  IconXlsxOutline16,
-  IconPptxOutline16,
   IconHtmlOutline16,
 } from '../icons.tsx'
-import type { FileViewerDescriptor } from '../service.ts'
+import type { ComponentType } from 'react'
+import type { FileViewerDescriptor, FileViewerProps } from '../service.ts'
 import { t } from '../locales.ts'
 import css from '../sidebar.module.css'
 
-/** The 9 built-in file viewer descriptors. */
+/**
+ * Lazy wrapper over the chunk-resident viewer component. The `pick`
+ * function is module-level (stable identity — the wrapper effect depends
+ * on it); the cast bridges the chunk exports record to the descriptor prop
+ * shape (the view reads only its own subset of FileViewerProps).
+ */
+const LazyTextEditor = lazyChunkComponent<FileViewerProps>('editor', (mod) => mod.TextEditor as ComponentType<FileViewerProps> | undefined)
+
+/** The 6 built-in file viewer descriptors. */
 export function builtinViewers(): readonly FileViewerDescriptor[] {
   return [
     {
@@ -54,43 +70,13 @@ export function builtinViewers(): readonly FileViewerDescriptor[] {
         <PdfView scope={scope} path={path} title={title} />
       ),
     },
-    {
-      id: 'docx',
-      title: () => t('viewerDocx'),
-      icon: (size: number) => <IconDocxOutline16 size={size} />,
-      exts: ['docx'],
-      fetchStrategy: 'mediaUrl',
-      component: ({ scope, path, title }) => (
-        <DocxView scope={scope} path={path} title={title} />
-      ),
-    },
-    {
-      id: 'xlsx',
-      title: () => t('viewerXlsx'),
-      icon: (size: number) => <IconXlsxOutline16 size={size} />,
-      exts: ['xlsx'],
-      fetchStrategy: 'mediaUrl',
-      component: ({ scope, path, title }) => (
-        <XlsxView scope={scope} path={path} title={title} />
-      ),
-    },
-    {
-      id: 'pptx',
-      title: () => t('viewerPptx'),
-      icon: (size: number) => <IconPptxOutline16 size={size} />,
-      exts: ['pptx'],
-      fetchStrategy: 'mediaUrl',
-      component: ({ scope, path, title }) => (
-        <PptxView scope={scope} path={path} title={title} />
-      ),
-    },
     {
       id: 'markdown',
       title: () => t('viewerMarkdown'),
       icon: (size: number) => <IconMarkdownOutline16 size={size} />,
       exts: ['md', 'markdown'],
       fetchStrategy: 'fsRead',
-      component: (props) => <TextEditor {...props} />,
+      component: (props) => <LazyTextEditor {...props} />,
     },
     {
       id: 'html',
@@ -112,7 +98,7 @@ export function builtinViewers(): readonly FileViewerDescriptor[] {
           desc: () => t('settingsHtmlDefaultUnsafeDesc'),
         }],
       },
-      component: (props) => <TextEditor {...props} />,
+      component: (props) => <LazyTextEditor {...props} />,
     },
     {
       id: 'code',
@@ -121,7 +107,7 @@ export function builtinViewers(): readonly FileViewerDescriptor[] {
       exts: [],
       priority: -100,
       fetchStrategy: 'fsRead',
-      component: (props) => <TextEditor {...props} />,
+      component: (props) => <LazyTextEditor {...props} />,
     },
     {
       id: 'binary-download',

src/client/chunk-loader.ts

@@ -0,0 +1,351 @@
+/**
+ * Lazy chunk loader for the client bundle. The heavy preview/terminal
+ * libraries (CodeMirror, xterm — the editor/terminal stacks, several MB)
+ * live in separate build-time bundles (`lib/client-<name>.js`) fetched only
+ * on first use of the feature that needs them, so startup downloads/parses
+ * only the ~1MB core bundle. (The office stack — Univer / docx-preview /
+ * pptx-renderer — is no longer bundled here: Office previews moved to the
+ * recommended office plugin, see plugins-viewers.ts.)
+ *
+ * How a chunk script works (see tsdown.config.ts chunkBundle):
+ *
+ *   globalThis.__dshChunks__ = globalThis.__dshChunks__ || {};
+ *   globalThis.__dshChunks__["terminal"] = (require) => { ...exports };
+ *
+ * The script registers its factory on a plugin-owned global registry (NOT
+ * through window.__ModuleLoader__.load — the module loader's import() only
+ * resolves seed words, shell-own modules, registered factories, and boot
+ * graph rows; a chunk id is none of those, so resolution would be version-
+ * dependent). Materialization is plugin-owned:
+ *
+ * 1. inject <script src="/sidebar/bundle/<name>.js"> (classic same-origin
+ *    script; the official /plugins/<id>/client.js route cannot serve
+ *    arbitrary file names, so the plugin's own host route serves the chunks),
+ * 2. read the factory from the global registry,
+ * 3. call it with a require that resolves the platform externals through
+ *    `__DSH_MODULES__.import(spec)` — the seed-word branch, the one part of
+ *    the module system that is stable across versions.
+ *
+ * Caching contract (three layers, each with a failure path):
+ * - In-memory: one in-flight promise per chunk, memoized until
+ *   {@link resetChunks}; a failed load removes its entry so the next call
+ *   retries from scratch. HMR re-activation keeps the resolved exports of
+ *   unchanged chunks (ETag revalidation via
+ *   {@link revalidateChunksOnReactivate}) — the next lazy open skips the
+ *   re-inject / re-execute.
+ * - Script execution: each re-execution overwrites the global registry slot
+ *   (assignment, never registration) — no "duplicate factory registration"
+ *   class of errors; a failed materialization clears the cache so the retry
+ *   re-injects and re-executes.
+ * - HTTP: the bundle route revalidates every request (`cache-control:
+ *   no-cache` + ETag, 304 when unchanged), so page refreshes and HMR
+ *   re-activations never re-download a multi-MB chunk that did not change.
+ *
+ * HMR: each plugin activation calls {@link revalidateChunksOnReactivate},
+ * which HEADs every loaded chunk against the bundle route and keeps the
+ * in-memory cache for the ones whose ETag is unchanged (a hot-reloaded core
+ * bundle therefore does not re-execute multi-MB chunk scripts). Chunk-only
+ * source edits still need a manual page refresh (the HMR poll watches only
+ * client.js); an edit that does land while a core HMR happens is caught by
+ * the ETag comparison on the next activation.
+ */
+export type ChunkName = 'terminal' | 'editor' | 'mermaid'
+
+/** The module exports a chunk factory provides (namespace-ish record). */
+export type ChunkExports = Record<string, unknown>
+
+/** A chunk factory: (require) => exports (the chunk's CJS closure shape). */
+type ChunkFactory = (require: (spec: string) => unknown) => ChunkExports
+
+/**
+ * The platform externals a chunk bundle may require (mirror of
+ * CLIENT_EXTERNALS in tsdown.config.ts — the chunk builds keep these
+ * external and the loader resolves them here). A superset is safe: the
+ * require only answers what the chunk actually asks for. The shell's static
+ * module table seeds React, Cordis, and the UI libraries (primitives/slots);
+ * `dsh-client-runtime/client` normalizes onto the runtime package row
+ * (stripClientSuffix). dsh-client-web-react / dsh-client-schema-form were
+ * dropped in DSH 0.1.0-rc.8 (no rc.8 publish, nothing requires them) — the
+ * chunks never asked for them, so they no longer belong here.
+ */
+export const CHUNK_EXTERNALS: readonly string[] = [
+  'react',
+  'react/jsx-runtime',
+  'react-dom',
+  'react-dom/client',
+  'cordis',
+  '@deepseek-ai/dsh-client-ui-slots',
+  '@deepseek-ai/dsh-client-ui-primitives',
+  '@deepseek-ai/dsh-client-runtime/client',
+]
+
+/** Chunk script endpoint served by the plugin host half (src/bundle-route.ts). */
+const CHUNK_URL = (name: ChunkName): string => `/sidebar/bundle/${name}.js`
+
+/** Bound on the revalidation HEAD round-trip. A timeout fails open (drop +
+ *  re-fetch on the next open) so a stuck bundle route can never wedge lazy
+ *  chunk loads behind the revalidation barrier. */
+const CHUNK_REVALIDATE_TIMEOUT_MS = 5_000
+
+/**
+ * The client module system surface this loader needs to resolve externals.
+ * DSH 0.1.0-rc.8 provides it as the `ctx.modules` service (no page global
+ * anymore); the plugin injects it at activation via
+ * {@link setChunkModuleSystem}. The rc.7-era `window.__DSH_MODULES__` global
+ * remains as a fallback so older hosts and the test harness keep working.
+ */
+export interface ChunkModuleSystem {
+  import(specifier: string): Promise<unknown>
+}
+
+/** The module system injected by the client half at activation (rc.8+). */
+let injectedModuleSystem: ChunkModuleSystem | undefined
+
+/**
+ * Plugin-owned page global carrying the injected module system across
+ * bundle copies: the lazy chunk bundles (client-editor.js etc.) inline their
+ * own chunk-loader instance, and rc.8 no longer exposes the shell module
+ * system as a page global — so the core bundle's injection must be visible
+ * to the chunk copies through a namespace of our own.
+ */
+const MODULE_SYSTEM_GLOBAL = '__dshSidebarModuleSystem__'
+
+/**
+ * Inject the client module system the chunk externals resolve through.
+ * Called by the client half's apply() with `ctx.modules` (rc.8+); pass
+ * undefined to clear (tests). Survives {@link resetChunks} — the module
+ * system is shell state, not chunk state, and stays live across HMR.
+ */
+export function setChunkModuleSystem(system: ChunkModuleSystem | undefined): void {
+  injectedModuleSystem = system
+  const g = globalThis as Record<string, unknown>
+  if (system === undefined) delete g[MODULE_SYSTEM_GLOBAL]
+  else g[MODULE_SYSTEM_GLOBAL] = system
+}
+
+/** Resolve the shell-installed module system (injected, then the plugin
+ *  global shared with chunk-bundle copies, then the rc.7 page global). */
+function moduleSystem(): ChunkModuleSystem | undefined {
+  const g = globalThis as Record<string, unknown>
+  return injectedModuleSystem
+    ?? g[MODULE_SYSTEM_GLOBAL] as ChunkModuleSystem | undefined
+    ?? (g as { __DSH_MODULES__?: ChunkModuleSystem }).__DSH_MODULES__
+}
+
+/** The plugin-owned chunk factory registry the chunk scripts populate. */
+interface ChunkRegistry {
+  [name: string]: ChunkFactory | undefined
+}
+
+function chunkRegistry(): ChunkRegistry {
+  const g = globalThis as { __dshChunks__?: ChunkRegistry }
+  return g.__dshChunks__ ??= {}
+}
+
+/** Script-load hook; tests replace it with a stub (the default needs a real DOM + network). */
+export type ChunkScriptLoader = (src: string) => Promise<void>
+
+const defaultScriptLoader: ChunkScriptLoader = (src) => new Promise((resolve, reject) => {
+  const el = document.createElement('script')
+  el.async = true
+  el.src = src
+  el.addEventListener('load', () => {
+    el.remove()
+    resolve()
+  }, { once: true })
+  el.addEventListener('error', () => {
+    el.remove()
+    reject(new Error(`[dsh-better-sidebar] chunk script ${src} failed to load`))
+  }, { once: true })
+  document.head.append(el)
+})
+
+let scriptLoader: ChunkScriptLoader = defaultScriptLoader
+
+/** Test hook: replace the chunk-script loader (pass null to restore the default). */
+export function setChunkScriptLoaderForTests(loader: ChunkScriptLoader | null): void {
+  scriptLoader = loader ?? defaultScriptLoader
+}
+
+/** Test/dev hook: resolve a chunk without fetching a script (e.g. vitest). */
+const testLoaders = new Map<ChunkName, () => Promise<ChunkExports>>()
+export function registerChunkForTests(name: ChunkName, loader: () => Promise<ChunkExports>): void {
+  testLoaders.set(name, loader)
+}
+
+/** Memoized externals require, resolved once per page from the seed table. */
+let externalsRequire: ((spec: string) => unknown) | undefined
+
+async function buildExternalsRequire(modules: ChunkModuleSystem): Promise<(spec: string) => unknown> {
+  if (externalsRequire !== undefined) return externalsRequire
+  // Per-spec tolerance: a spec the running DSH version cannot resolve (e.g.
+  // the runtime/client exemption row) stays unresolved until a chunk
+  // actually requires it — only then it is a loud error.
+  const entries = await Promise.all(CHUNK_EXTERNALS.map(async (spec) => {
+    try {
+      return [spec, await modules.import(spec)] as const
+    } catch {
+      return [spec, undefined] as const
+    }
+  }))
+  const table = new Map<string, unknown>(entries)
+  externalsRequire = (spec: string): unknown => {
+    if (!table.has(spec)) {
+      // Single quotes: the bundle-consistency scan regexes for require("...")
+      // lexical calls — a double-quoted literal here would trip it.
+      throw new Error(`[dsh-better-sidebar] chunk require('${spec}') missed the module table`)
+    }
+    return table.get(spec)
+  }
+  return externalsRequire
+}
+
+/** In-flight/memoized chunk loads; a failure removes its entry so a retry re-fetches. */
+const cache = new Map<ChunkName, Promise<ChunkExports>>()
+
+/** Chunk names whose exports are currently cached (loaded successfully). */
+const loadedChunks = new Set<ChunkName>()
+
+/** ETags observed for loaded chunks (HEAD revalidation, see
+ *  {@link revalidateChunksOnReactivate}). */
+const chunkEtags = new Map<ChunkName, string>()
+
+/** Pending revalidation barrier: while set, {@link loadChunk} awaits it
+ *  before serving cache (see revalidateChunksOnReactivate). */
+let revalidation: Promise<void> | null = null
+
+/** Best-effort ETag capture for revalidation. The script tag itself exposes
+ *  no response headers, so after a successful load we HEAD the bundle route
+ *  once. Failures (including a stuck route — bounded by the timeout) are
+ *  ignored — revalidation then fails open (re-fetch). */
+async function recordEtag(name: ChunkName): Promise<void> {
+  try {
+    const res = await fetch(CHUNK_URL(name), {
+      method: 'HEAD',
+      cache: 'no-cache',
+      signal: AbortSignal.timeout(CHUNK_REVALIDATE_TIMEOUT_MS),
+    })
+    const etag = res.headers.get('etag')
+    if (etag !== null && etag !== '') chunkEtags.set(name, etag)
+  } catch {
+    chunkEtags.delete(name)
+  }
+}
+
+/**
+ * Load (once) and materialize a lazy chunk, returning its module exports.
+ * Concurrent callers share one in-flight load; a failure clears the cache
+ * entry so the next call retries (the script re-executes and overwrites its
+ * global registry slot — assignments are idempotent).
+ * @param name - the chunk to load.
+ */
+export async function loadChunk(name: ChunkName): Promise<ChunkExports> {
+  // Barrier: never serve a cache entry that a pending revalidation is about
+  // to inspect — a stale chunk could otherwise render mid-HMR (CR #232 P1).
+  if (revalidation !== null) await revalidation
+  const cached = cache.get(name)
+  if (cached !== undefined) return cached
+  let task: Promise<ChunkExports>
+  task = (async (): Promise<ChunkExports> => {
+    const test = testLoaders.get(name)
+    if (test !== undefined) return test()
+    const modules = moduleSystem()
+    if (modules === undefined) {
+      throw new Error(`[dsh-better-sidebar] chunk "${name}": client module system unavailable`)
+    }
+    await scriptLoader(CHUNK_URL(name))
+    const factory = chunkRegistry()[name]
+    if (typeof factory !== 'function') {
+      throw new Error(`[dsh-better-sidebar] chunk "${name}" script did not register its factory`)
+    }
+    const require = await buildExternalsRequire(modules)
+    const exports = factory(require)
+    // Only track production loads whose cache entry survived (a revalidation
+    // sweep may have dropped it mid-flight; the caller still gets these
+    // exports, they just are not memoized for the next open). Test-registry
+    // loads return above and never reach this tracking.
+    if (cache.get(name) !== undefined) {
+      loadedChunks.add(name)
+      void recordEtag(name)
+    }
+    return exports
+  })()
+  cache.set(name, task)
+  void task.catch(() => {
+    cache.delete(name)
+    loadedChunks.delete(name)
+    chunkEtags.delete(name)
+  })
+  return task
+}
+
+/**
+ * Drop all chunk state for a fresh plugin activation (HMR-safe): clear the
+ * in-memory cache and any test-registry entries, so the next lazy open
+ * re-fetches and re-executes the current chunk scripts (the registry slots
+ * are overwritten by the re-execution — no cleanup needed). A pending
+ * revalidation barrier is cleared too: it was only guarding the cache reads
+ * of the state being dropped, so the next load must not wait on it (the
+ * orphaned task still settles and its identity-guarded `finally` no-ops).
+ */
+export function resetChunks(): void {
+  cache.clear()
+  loadedChunks.clear()
+  chunkEtags.clear()
+  testLoaders.clear()
+  externalsRequire = undefined
+  revalidation = null
+}
+
+/**
+ * HMR-safe re-activation hook (index.tsx calls this instead of a full
+ * reset): keep the resolved exports of every loaded chunk and drop only the
+ * ones whose script changed on disk — the bundle route revalidates every
+ * request (cache-control: no-cache + ETag), so an unchanged chunk keeps its
+ * memory cache and the next lazy open skips the re-inject / re-execute.
+ * Fail-open: an unreachable, ETag-less, or timed-out chunk is dropped
+ * (re-fetch on next open). Test-registry entries are always cleared
+ * (per-test fixtures).
+ * A page refresh remains the authoritative reset (the HMR poll watches only
+ * client.js; chunk-only edits surface here on the next core re-activation).
+ *
+ * The returned promise is also a BARRIER for {@link loadChunk}: while a
+ * revalidation is pending, every chunk load awaits it before serving cache,
+ * so a lazy tab opening mid-revalidation can never render stale exports
+ * that the sweep is about to invalidate (CR #232 P1).
+ */
+export function revalidateChunksOnReactivate(): Promise<void> {
+  testLoaders.clear()
+  const task = (async (): Promise<void> => {
+    // Entries not tracked as production-loaded (test fixtures, orphans) never
+    // survive a re-activation — their resolved exports came from per-test
+    // stubs, not from the bundle route.
+    for (const name of [...cache.keys()]) {
+      if (!loadedChunks.has(name)) cache.delete(name)
+    }
+    if (loadedChunks.size === 0) return
+    const stale: ChunkName[] = []
+    await Promise.all([...loadedChunks].map(async (name) => {
+      try {
+        const res = await fetch(CHUNK_URL(name), {
+          method: 'HEAD',
+          cache: 'no-cache',
+          signal: AbortSignal.timeout(CHUNK_REVALIDATE_TIMEOUT_MS),
+        })
+        const etag = res.headers.get('etag')
+        if (etag !== null && etag !== '' && chunkEtags.get(name) === etag) return
+      } catch {
+        // Fail open below (network errors and timeouts alike).
+      }
+      stale.push(name)
+    }))
+    for (const name of stale) {
+      cache.delete(name)
+      loadedChunks.delete(name)
+      chunkEtags.delete(name)
+    }
+  })()
+  revalidation = task
+  void task.finally(() => { if (revalidation === task) revalidation = null })
+  return task
+}

src/client/chunks/editor.tsx

@@ -0,0 +1,9 @@
+/**
+ * Lazy chunk entry: the code/markdown/html text editor (CodeMirror 6 + the
+ * language packages). Built as `lib/client-editor.js` and registered under
+ * `dsh-better-sidebar/editor` — fetched only when a text file is first
+ * opened (see chunk-loader.ts and docs/plans/2026-08-12-lazy-chunks-design.md).
+ * Never import this module from the core bundle: it pulls CodeMirror into
+ * the startup path.
+ */
+export { TextEditor } from '../TextEditor.tsx'

src/client/chunks/mermaid.tsx

@@ -0,0 +1,10 @@
+/**
+ * Lazy chunk entry: the mermaid diagram renderer for the markdown preview
+ * (mermaid + its d3/dagre/cytoscape graph deps). Built as
+ * lib/client-mermaid.js and registered under the `mermaid` global chunk
+ * slot — fetched only when a previewed markdown file contains a mermaid
+ * fence (see chunk-loader.ts and the mermaid markdown preview design doc).
+ * Never import this module from the core bundle: it pulls mermaid into the
+ * startup path.
+ */
+export { MermaidMarkdown } from '../mermaid.tsx'

src/client/chunks/terminal.tsx

@@ -0,0 +1,9 @@
+/**
+ * Lazy chunk entry: the interactive terminal (xterm + fit addon). Built as
+ * `lib/client-terminal.js` and registered under
+ * `dsh-better-sidebar/terminal` — fetched only when a terminal tab is first
+ * opened (see chunk-loader.ts and docs/plans/2026-08-12-lazy-chunks-design.md).
+ * Never import this module from the core bundle: it pulls xterm (and its
+ * stylesheet) into the startup path.
+ */
+export { TerminalView } from '../TerminalView.tsx'

src/client/conversation-draft.ts

@@ -0,0 +1,29 @@
+/**
+ * Append text to the current session's composer draft through the
+ * conversation service — the shared path behind the explorer's @-reference
+ * button and the viewer selection popup. The service is resolved lazily
+ * through `ctx.get` (the inject-free read the app's own plugins use); a
+ * missing service or scope degrades to a logged no-op, never a crash.
+ */
+import type { Context, SidebarConversation } from '../context-types.ts'
+
+/**
+ * Append `text` to the session's composer draft (space-separated, like the
+ * @-mentions). Returns false — and logs — when the conversation service or
+ * the session scope is unavailable.
+ */
+export function appendToDraft(ctx: Context, sessionId: string, text: string): boolean {
+  try {
+    const actx = ctx.sessions.scope(sessionId)
+    if (actx === undefined) return false
+    const conversation = ctx.get('conversation') as SidebarConversation | undefined
+    if (conversation === undefined) return false
+    const input = conversation.input.for(actx)
+    const draft = input.state.getSnapshot().draft
+    input.setDraft(draft.trim() === '' ? text : `${draft} ${text}`)
+    return true
+  } catch (error) {
+    console.warn('[dsh-better-sidebar] draft insert failed:', error)
+    return false
+  }
+}

src/client/desktop-env.ts

@@ -0,0 +1,72 @@
+/**
+ * Desktop-shell detection for the sidebar. Shells may stamp the render URL
+ * with `dsh-desktop-mode` / `dsh-desktop-platform` (the official Electron
+ * shell does) and expose `window.__DSH_DESKTOP_FILE_PATH__` through a
+ * preload. Parsed once per page and memoized (the URL never changes
+ * mid-session); `resetDesktopEnvForTests` clears the memo for unit tests.
+ *
+ * GEOMETRY POLICY: this module only REPORTS shell facts — it never decides
+ * how to adapt. The strip height comes from standard signals first (the
+ * Window Controls Overlay API, see wco.ts), then the documented contract
+ * parameter `dsh-desktop-titlebar-inset` (a shell may stamp the real pixels
+ * it reserves at the top), then the user's chosen scheme (preset / custom).
+ * The legacy win32-advanced 32px constant is gone from the core: it lives
+ * in the opt-in shell preset (shell-presets.ts) as a fallback for shells
+ * without the WCO API.
+ */
+export interface DesktopEnv {
+  /** Running inside a desktop shell (any URL stamp or preload marker). */
+  readonly desktop: boolean
+  /** `advanced` = frameless/custom-titlebar shell; `compatibility` = native frame. */
+  readonly mode: 'compatibility' | 'advanced' | null
+  /** Shell platform stamp ('darwin' | 'win32' | …), lowercased, or null. */
+  readonly platform: string | null
+  /**
+   * Contract parameter `dsh-desktop-titlebar-inset`: pixels the shell
+   * reserves at the top of the web content for its own chrome (0–120,
+   * clamped; 0 when absent). Standard WCO geometry takes precedence over
+   * this whenever the API is available.
+   */
+  readonly titlebarInset: number
+}
+
+let cached: DesktopEnv | undefined
+
+/** Read the shell's desktop stamps (memoized per page; SSR-safe). */
+export function parseDesktopEnv(): DesktopEnv {
+  if (cached !== undefined) return cached
+  const hasWindow = typeof window !== 'undefined'
+  const hasPreloadMarker = hasWindow
+    && typeof (window as { __DSH_DESKTOP_FILE_PATH__?: unknown }).__DSH_DESKTOP_FILE_PATH__ !== 'undefined'
+  // location.search includes the leading '?', which URLSearchParams does NOT
+  // strip (it would become part of the first key) — drop it explicitly.
+  // SSR (no window) resolves the empty environment: nothing desktop.
+  const params = hasWindow
+    ? new URLSearchParams(window.location.search.replace(/^\?/, ''))
+    : new URLSearchParams()
+  const modeParam = params.get('dsh-desktop-mode')
+  const mode = modeParam === 'compatibility' || modeParam === 'advanced' ? modeParam : null
+  const platformParam = params.get('dsh-desktop-platform')
+  const platform = platformParam !== null && platformParam !== '' ? platformParam.toLowerCase() : null
+  const desktop = mode !== null || hasPreloadMarker
+  cached = {
+    desktop,
+    mode,
+    platform,
+    titlebarInset: parseTitlebarInset(params.get('dsh-desktop-titlebar-inset')),
+  }
+  return cached
+}
+
+/** Clamp the contract inset parameter into 0–120 (invalid/absent → 0). */
+function parseTitlebarInset(raw: string | null): number {
+  if (raw === null) return 0
+  const parsed = Number(raw)
+  if (!Number.isFinite(parsed)) return 0
+  return Math.min(120, Math.max(0, Math.round(parsed)))
+}
+
+/** Test hook: drop the memo so the next parse re-reads the URL/globals. */
+export function resetDesktopEnvForTests(): void {
+  cached = undefined
+}

src/client/icons.tsx

@@ -51,6 +51,25 @@ export const IconDiffOutline16 = ({ size = 16, className }: IconProps) => (
   </svg>
 )
 
+/**
+ * Stop glyph for the background-job kill button: a filled square in the
+ * app's outline scale (16), the universal "halt this work" mark.
+ */
+export const IconStopOutline16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <rect x="4" y="4" width="8" height="8" rx="1.5" fill="currentColor" stroke="none" />
+  </svg>
+)
+
+/** Upload glyph in the app's outline style: an arrow rising into a tray
+ *  (the file-manager "upload into the workspace" action). */
+export const IconUploadOutline16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M8 10V2.75M4.75 5.5 8 2.25 11.25 5.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+    <path d="M2.75 10.5v2.25A1.25 1.25 0 0 0 4 14h8a1.25 1.25 0 0 0 1.25-1.25V10.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
+  </svg>
+)
+
 // ── File-viewer inventory glyphs (Side card settings page) ────────────────
 
 /** Image viewer glyph: a picture frame with a sun and a mountain. */
@@ -73,33 +92,6 @@ export const IconPdfOutline16 = ({ size = 16, className }: IconProps) => (
   </svg>
 )
 
-/** Word viewer glyph: a document frame with a "W". */
-export const IconDocxOutline16 = ({ size = 16, className }: IconProps) => (
-  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-    <path d="M3.5 1.5h6.5L13.5 5v9.5h-10z" stroke="currentColor" strokeWidth="1.5" strokeLinejoin="round" />
-    <path d="M9.5 1.5V5h4" stroke="currentColor" strokeWidth="1.5" strokeLinejoin="round" />
-    <path d="M6.2 13.4 7.4 10l1.2 3.4M7.4 10.6l-.35-1.1c-.2-.62.2-1.25.85-1.25h.2c.65 0 1.05.63.85 1.25l-.35 1.1" stroke="currentColor" strokeWidth="1.25" strokeLinecap="round" strokeLinejoin="round" />
-    <path d="M8.75 10.6 9.2 9.4" stroke="currentColor" strokeWidth="1.25" strokeLinecap="round" />
-  </svg>
-)
-
-/** Excel viewer glyph: a spreadsheet grid. */
-export const IconXlsxOutline16 = ({ size = 16, className }: IconProps) => (
-  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-    <rect x="1.5" y="2" width="13" height="12" rx="2" stroke="currentColor" strokeWidth="1.5" />
-    <path d="M1.5 6h13M1.5 9.5h13M6 6v8M10.5 6v8" stroke="currentColor" strokeWidth="1.25" />
-    <path d="m3.8 13.2 2-3M5.8 13.2l-2-3" stroke="currentColor" strokeWidth="1.25" strokeLinecap="round" />
-  </svg>
-)
-
-/** PowerPoint viewer glyph: a chart with rising bars. */
-export const IconPptxOutline16 = ({ size = 16, className }: IconProps) => (
-  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-    <rect x="1.5" y="2.5" width="13" height="11" rx="2" stroke="currentColor" strokeWidth="1.5" />
-    <path d="M4 12.5v-3M7 12.5V7M10 12.5V4.5M13 12.5v-1.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
-  </svg>
-)
-
 /** Markdown viewer glyph: the classic "M with a down arrow" badge. */
 export const IconMarkdownOutline16 = ({ size = 16, className }: IconProps) => (
   <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
@@ -125,3 +117,23 @@ export const IconGlobeOutline16 = ({ size = 16, className }: IconProps) => (
     <path d="M1.5 8h13M8 1.5c-2.4 1.8-2.4 11.2 0 13M8 1.5c2.4 1.8 2.4 11.2 0 13" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
   </svg>
 )
+
+/** History glyph (thread switcher): a clock with a counterclockwise arrow,
+ *  in the app's outline style — the "past conversations" mark. */
+export const IconHistoryOutline16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M2.4 6.8A5.6 5.6 0 1 1 2.4 9.2" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
+    <path d="M2.2 3.4v3.4h3.4" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+    <path d="M8 5.4V8l1.9 1.2" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+  </svg>
+)
+
+/** Save glyph (save-as-new-session): the classic floppy disk, in the app's
+ *  outline style. */
+export const IconSaveOutline16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M4.2 14.5h7.6a1.2 1.2 0 0 0 1.2-1.2V4.9L10.6 2.5H4.2A1.2 1.2 0 0 0 3 3.7v9.6a1.2 1.2 0 0 0 1.2 1.2z" stroke="currentColor" strokeWidth="1.5" strokeLinejoin="round" />
+    <path d="M10 2.5v2.6H5.6V2.5" stroke="currentColor" strokeWidth="1.5" strokeLinejoin="round" />
+    <path d="M5.4 14.5v-4.2h5.2v4.2" stroke="currentColor" strokeWidth="1.5" strokeLinejoin="round" />
+  </svg>
+)

src/client/index.tsx

@@ -8,66 +8,55 @@
  * bundle itself is a module-table consumer only (react + ui-primitives +
  * xterm, all provided or inlined).
  */
-import { Component, createElement, type ErrorInfo, type ReactNode } from 'react'
+import { createElement } from 'react'
 import { createRoot, type Root } from 'react-dom/client'
 import type { Context } from '../context-types.ts'
-import { createSidebarStore } from './state.ts'
-import { createBetterSidebarService } from './service.ts'
+import { allLeaves, createSidebarStore, isAgentTabId } from './state.ts'
+import { createBetterSidebarService, matchUrlTarget } from './service.ts'
+import { revalidateChunksOnReactivate, setChunkModuleSystem } from './chunk-loader.ts'
 import { registerBuiltins } from './builtins/index.ts'
 import { Sidebar } from './Sidebar.tsx'
+import { RenderBoundary } from './RenderBoundary.tsx'
 import { registerOpenPathInterception, registerTurnTailInterception } from './intercept.tsx'
 import { registerLinkInterception } from './link-intercept.ts'
 import { registerImeGuard } from './ime-guard.ts'
-import { loadPrefs } from './prefs.ts'
+import { registerSettingsNavIcon } from './settings-nav-icon.ts'
+import { loadExternalDisable, loadPrefs } from './prefs.ts'
 import { SideCardSection } from './SideCardSection.tsx'
 import { api } from './api.ts'
-import { t } from './locales.ts'
+import { LOCALE_NS, attachLocale, t, zh, en } from './locales.ts'
 import css from './sidebar.module.css'
 import './layout.css'
 
-/** Services required before mounting (provided by the client runtime). */
-export const inject = ['slots', 'sessions', 'connection', 'workspaces']
+/** Services required before mounting (provided by the client runtime; the
+ *  locale service backs the sidebar's copy — see locales.ts). `modules`
+ *  (rc.8+) is the client module system the chunk loader resolves its
+ *  externals through — Cordis guards service access without inject. */
+export const inject = ['slots', 'sessions', 'connection', 'workspaces', 'locale', 'modules']
 
 /**
- * Error boundary over the sidebar tree: a render error must never blank the
- * whole panel silently — it shows a dismissible error strip and logs the
- * stack for diagnosis.
+ * Error boundary over the sidebar tree (root scope): a render error in the
+ * sidebar SHELL itself must never blank the page silently — the shared
+ * RenderBoundary shows a dismissible error strip and logs the stack. The
+ * per-tab scope (Sidebar.tsx) catches viewer/editor crashes first; this root
+ * boundary stays as the last resort for Workbench/shell errors.
  */
-class SidebarBoundary extends Component<{ children: ReactNode }, { error: string | null }> {
-  state = { error: null as string | null }
-
-  static getDerivedStateFromError(error: unknown): { error: string } {
-    return { error: error instanceof Error ? error.message : String(error) }
-  }
-
-  componentDidCatch(error: Error, info: ErrorInfo): void {
-    console.error('[dsh-better-sidebar] render error:', error, info.componentStack)
-  }
-
-  render(): ReactNode {
-    if (this.state.error !== null) {
-      return (
-        <div className={css.boundaryError}>
-          <span>dsh-better-sidebar: {this.state.error}</span>
-          <button
-            type="button"
-            className={css.terminalRetry}
-            onClick={() => { this.setState({ error: null }) }}
-          >
-            {t('terminalRetry')}
-          </button>
-        </div>
-      )
-    }
-    return this.props.children
-  }
-}
-
 /**
  * Client plugin body.
  * @param ctx - the client cordis context (slots, sessions).
  */
 export function apply(ctx: Context): void {
+  // The sidebar follows the DSH i18n system: attach the locale service so
+  // the module-level t()/isZh() resolve the Host-backed language preference
+  // (and switch live — the Sidebar root subscribes to it), and register the
+  // plugin's dictionaries into the shared locale registry. The disposers
+  // run on fiber disposal, so re-activation (HMR) re-registers cleanly.
+  attachLocale(ctx.locale)
+  ctx.effect(() => {
+    const offZh = ctx.locale.register(LOCALE_NS, 'zh', zh)
+    const offEn = ctx.locale.register(LOCALE_NS, 'en', en)
+    return () => { offZh(); offEn() }
+  }, 'dsh-better-sidebar: dictionaries')
   // One store instance per activation: production code creates it only here,
   // then hands it to the mounted panel and closes over it in the slot
   // registrations (the official createXXXStore() factory rule — no
@@ -79,11 +68,31 @@ export function apply(ctx: Context): void {
   // are ready by the time the sidebar renders.
   const service = createBetterSidebarService(sidebarStore)
   ctx.provide('betterSidebar', service)
+  // Terminal tab titles use the host's effective shell name (e.g. bash/zsh)
+  // instead of "Terminal 1". Start with a safe fallback and replace it as
+  // soon as the host shell info resolves. Tabs created before the response
+  // arrives keep the fallback title, so also retitle any already-open UI
+  // terminal tabs that still carry it.
+  const fallbackTitle = t('terminal')
+  let terminalTitle = fallbackTitle
+  void api.shellGet().then(({ name }) => {
+    terminalTitle = name
+    const snapshot = service.getSnapshot()
+    if (snapshot.state === undefined) return
+    const tabs = allLeaves(snapshot.state.splits)
+      .concat(allLeaves(snapshot.state.bottomSplits))
+      .flatMap(leaf => leaf.tabs)
+    for (const tab of tabs) {
+      if (tab.type === 'terminal' && !isAgentTabId(tab.id) && tab.title === fallbackTitle) {
+        service.updateTab(tab.id, { title: name })
+      }
+    }
+  }).catch(() => { /* keep fallback */ })
   // Register the plugin's own built-in tabs and viewers through the same
   // service (eating our own dogfood). The disposer unregisters them on
   // fiber disposal (HMR-safe).
   ctx.effect(
-    () => registerBuiltins(ctx, service),
+    () => registerBuiltins(ctx, service, { terminalTitle: () => terminalTitle }),
     'dsh-better-sidebar: register built-in tabs and viewers',
   )
   // A failure anywhere in the client lifecycle must never take the app down
@@ -103,11 +112,113 @@ export function apply(ctx: Context): void {
     }
   }
   try {
+    // rc.8+ exposes the client module system as the `ctx.modules` service
+    // (no window.__DSH_MODULES__ page global anymore); the chunk loader needs
+    // it to resolve its externals, so inject it before anything can load a
+    // lazy chunk. The loader falls back to the rc.7 global when absent.
+    setChunkModuleSystem(ctx.modules)
+    // Fresh chunk state for this activation: drop per-test fixtures and
+    // revalidate loaded chunk scripts against the bundle route's ETags —
+    // unchanged chunks keep their resolved exports (no re-inject /
+    // re-execute on HMR), changed ones are dropped for a clean re-fetch.
+    void revalidateChunksOnReactivate()
     ctx.effect(() => {
       let disposed = false
       let root: Root | undefined
       let host: HTMLDivElement | undefined
-      void (async () => {
+      let mounted = false
+      let bodyObserver: MutationObserver | undefined
+      let hostCheckFrame: number | null = null
+      const unmount = (): void => {
+        if (!mounted) return
+        mounted = false
+        bodyObserver?.disconnect()
+        bodyObserver = undefined
+        if (hostCheckFrame !== null) {
+          cancelAnimationFrame(hostCheckFrame)
+          hostCheckFrame = null
+        }
+        root?.unmount()
+        root = undefined
+        host?.remove()
+        host = undefined
+      }
+      /** Re-attach the host if the page (a desktop shell wrapper, SPA
+       *  navigation, …) ever removes it from <body>. Cheap: childList only,
+       *  no subtree, no attribute filtering. */
+      const guardAnchor = (): void => {
+        if (bodyObserver !== undefined) return
+        bodyObserver = new MutationObserver(() => {
+          if (host !== undefined && !document.body.contains(host)) {
+            document.body.appendChild(host)
+          }
+        })
+        bodyObserver.observe(document.body, { childList: true })
+      }
+      /** One-shot geometry self-check: if the host page transforms
+       *  <html>/<body> itself (exotic shells), a fixed panel host would
+       *  track the transformed box instead of the viewport. Flip the
+       *  degraded mode and pin the host to the viewport every frame until
+       *  the ancestor transform is actually gone. The normal path (no
+       *  page-level transform) never runs the sync loop. */
+      const scheduleHostCheck = (): void => {
+        hostCheckFrame ??= requestAnimationFrame(() => {
+          hostCheckFrame = null
+          const layer = host?.querySelector<HTMLElement>('[data-dsh-panel-host]')
+          if (layer === null || layer === undefined) return
+          const rect = layer.getBoundingClientRect()
+          const mismatched = Math.abs(rect.left) > 8 || Math.abs(rect.top) > 8
+            || Math.abs(rect.width - window.innerWidth) > 8 || Math.abs(rect.height - window.innerHeight) > 8
+          if (!mismatched) {
+            layer.removeAttribute('data-dsh-panel-host-degraded')
+            layer.style.transform = ''
+            return
+          }
+          layer.setAttribute('data-dsh-panel-host-degraded', '')
+          console.warn('[dsh-better-sidebar] panel host geometry mismatch — a page-level transform was detected; using degraded viewport sync')
+          // Track our own compensating translation so the loop judges the
+          // UNCORRECTED geometry: clearing degraded mode must wait for the
+          // ancestor transform to actually disappear — the frame right after
+          // our correction applies would otherwise look "fixed" and the
+          // offset would return immediately (CR #232 P1).
+          let applied = { x: 0, y: 0 }
+          const sync = (): void => {
+            const r = layer.getBoundingClientRect()
+            const rawLeft = r.left - applied.x
+            const rawTop = r.top - applied.y
+            if (Math.abs(rawLeft) <= 1 && Math.abs(rawTop) <= 1
+              && Math.abs(r.width - window.innerWidth) <= 1 && Math.abs(r.height - window.innerHeight) <= 1) {
+              layer.removeAttribute('data-dsh-panel-host-degraded')
+              layer.style.transform = ''
+              return
+            }
+            const next = { x: -rawLeft, y: -rawTop }
+            if (next.x !== applied.x || next.y !== applied.y) {
+              applied = next
+              layer.style.transform = `translate(${applied.x}px, ${applied.y}px)`
+            }
+            hostCheckFrame = requestAnimationFrame(sync)
+          }
+          hostCheckFrame = requestAnimationFrame(sync)
+        })
+      }
+      const mount = (): void => {
+        if (mounted || disposed) return
+        try {
+          host = document.createElement('div')
+          host.setAttribute('data-dsh-better-sidebar', '')
+          document.body.appendChild(host)
+          root = createRoot(host)
+          root.render(createElement(RenderBoundary, { className: css.boundaryError }, createElement(Sidebar, { ctx, store: sidebarStore })))
+          mounted = true
+          guardAnchor()
+          scheduleHostCheck()
+        } catch (error) {
+          fail('mount', error)
+        }
+      }
+      const sync = async (): Promise<void> => {
+        if (disposed) return
         // Resolve the user's side card prefs BEFORE the first session seeds,
         // so a brand-new conversation opens (or stays closed) at the chosen
         // width from first paint. A settings route failure falls back to the
@@ -119,20 +230,26 @@ export function apply(ctx: Context): void {
         ])
         if (prefs !== null) sidebarStore.setPrefs(prefs)
         if (disposed) return
-        try {
-          host = document.createElement('div')
-          host.setAttribute('data-dsh-better-sidebar', '')
-          document.body.appendChild(host)
-          root = createRoot(host)
-          root.render(createElement(SidebarBoundary, null, createElement(Sidebar, { ctx, store: sidebarStore })))
-        } catch (error) {
-          fail('mount', error)
-        }
-      })()
+        // Mutual exclusion with the dsh-web-ui family right panel: while the
+        // aionui-panel provider is selected, the sidebar must not mount at
+        // all. Re-evaluated on every settings-document update (live switch).
+        const suspended = await loadExternalDisable(api)
+        if (disposed) return
+        sidebarStore.setSuspended(suspended)
+        if (suspended) unmount()
+        else mount()
+      }
+      void sync()
+      // Live re-evaluation: the runtime broadcasts settings-document updates
+      // (the aionui card saves through the same document). Best effort —
+      // deployments without the 'remote' service fall back to boot-time
+      // evaluation only.
+      const remote = ctx.get('remote') as { $on?: (event: string, listener: () => void) => () => void } | undefined
+      const offRemote = remote?.$on?.('settings/document-updated', () => { void sync() })
       return () => {
         disposed = true
-        root?.unmount()
-        host?.remove()
+        offRemote?.()
+        unmount()
       }
     }, 'dsh-better-sidebar: sidebar mount')
 
@@ -163,16 +280,36 @@ export function apply(ctx: Context): void {
     ctx.effect(
       () => {
         try {
-          // External http(s) links in the chat/GUI open the sidebar browser
-          // instead of a new window (gated on the browserInterceptLinks pref
-          // AND the browser tab's enable switch; Ctrl/Cmd+click bypasses).
+          // External http(s) links in the chat/GUI open the sidebar instead
+          // of a new window. Gated on the browserInterceptLinks MASTER pref,
+          // the URL's protocol flag (browserInterceptHttp / Https — https
+          // defaults OFF: most https sites refuse iframe embedding), and the
+          // target tab's enable switch; Ctrl/Cmd+click always bypasses. The
+          // target is the first registered tab whose `urlTarget` claims the
+          // URL (enabled tabs only), else the built-in browser tab.
+          const urlTargetOf = (url: URL): string | undefined => {
+            const prefs = sidebarStore.getPrefs()
+            const enabled = service.getTabs().filter(tab => prefs.tabsEnabled[tab.id] !== false)
+            return matchUrlTarget(enabled, url)?.id
+          }
           return registerLinkInterception({
-            takeoverEnabled: () => sidebarStore.getPrefs().browserInterceptLinks !== false
-              && sidebarStore.getPrefs().tabsEnabled['browser'] !== false,
+            takeoverEnabled: (url) => {
+              if (sidebarStore.getSuspended()) return false
+              const prefs = sidebarStore.getPrefs()
+              if (prefs.browserInterceptLinks === false) return false
+              const protocolOn = url.protocol === 'https:'
+                ? prefs.browserInterceptHttps !== false
+                : prefs.browserInterceptHttp !== false
+              if (!protocolOn) return false
+              // A plugin claim is the target (already enabled-filtered);
+              // otherwise the built-in browser must be enabled.
+              return urlTargetOf(url) !== undefined || prefs.tabsEnabled['browser'] !== false
+            },
             openInSidebar: (url) => {
               let title: string | undefined
               try { title = new URL(url).hostname } catch { /* keep the default title */ }
-              ctx.betterSidebar?.openTab({ type: 'browser', url, title })
+              const type = urlTargetOf(new URL(url)) ?? 'browser'
+              ctx.betterSidebar?.openTab({ type, url, title })
             },
             selfOrigin: window.location.origin,
           })
@@ -186,11 +323,12 @@ export function apply(ctx: Context): void {
 
     // The IME guard: composition keys (candidate arrows, confirm, cancel)
     // belong to the input method, never to page JS. Inlined third-party UI
-    // (Univer's office controls) has shipped unguarded keydown handlers that
-    // hijack ArrowUp/ArrowDown and break Chinese input (#562 regression); the
-    // document-capture guard neutralizes the whole class before React or any
-    // native listener sees the event. Registered as early as possible so no
-    // other capture-phase listener can win the ordering race.
+    // (formerly Univer's office controls, #562 regression) has shipped
+    // unguarded keydown handlers that hijack ArrowUp/ArrowDown and break
+    // Chinese input; the document-capture guard neutralizes the whole class
+    // before React or any native listener sees the event. Registered as
+    // early as possible so no other capture-phase listener can win the
+    // ordering race.
     ctx.effect(
       () => {
         try {
@@ -203,6 +341,16 @@ export function apply(ctx: Context): void {
       'dsh-better-sidebar: IME composition guard',
     )
 
+    // DSH 0.1.x does not yet carry an icon through the settings.section
+    // registration contract: its shell renders a generic gear for every
+    // external section. Mark only this plugin's localized nav row so
+    // layout.css can paint the requested Side card SVG; the disposer clears
+    // the marker for HMR / plugin disable.
+    ctx.effect(
+      () => registerSettingsNavIcon(() => t('settingsNav')),
+      'dsh-better-sidebar: settings navigation icon',
+    )
+
     // The "Side card" settings section: appears in the DSH Settings shell
     // once the shell's declaration is on the ledger (slots.inject waits for
     // it); the section reads/writes the prefs through the plugin's own

src/client/intercept.tsx

@@ -57,14 +57,29 @@ export function SidebarProducedFiles(props: {
   )
 }
 
-/** Register the turn-tail interception (returns the disposer). */
+/**
+ * Register the turn-tail interception (returns the disposer).
+ *
+ * The slot is a CHILD slot the host's ui-conversation declares in its
+ * `conversation.chat.node` children table (kind: chain, scope: session).
+ * Registering it directly races the declaration — the ui-slots core's
+ * load-time validation throws "not declared (a parent entry's children
+ * table must declare it)" when the parent entry is not on the ledger yet.
+ * slots.inject waits for the declaration: the callback runs synchronously
+ * when the slot is already declared, otherwise it runs inside the declaring
+ * register() call once the declaration commits; declaration collapse
+ * disposes the entry and a later declaration re-registers it. This mirrors
+ * @deepseek-ai/dsh-client-ui-deliverables' registration of the same slot.
+ */
 export function registerTurnTailInterception(ctx: Context, store: SidebarStore): () => void {
-  return ctx.slots.register({
+  return ctx.slots.inject('conversation.chat.turnTail', () => ctx.slots.register({
     name: 'conversation.chat.turnTail',
     // Decline the takeover while the editor tab type is disabled in the side
     // card settings: the produced-files row falls back to the default
-    // deliverables behavior instead of offering chips that cannot open.
+    // deliverables behavior instead of offering chips that cannot open. Also
+    // while the sidebar is externally disabled (aionui-panel chosen).
     select: (owner) => {
+      if (store.getSuspended()) return null
       if (store.getPrefs().tabsEnabled['editor'] === false) return null
       return selectProducedFiles(owner)
     },
@@ -73,7 +88,7 @@ export function registerTurnTailInterception(ctx: Context, store: SidebarStore):
     inject: (sessionId: string) => ({
       openInSidebar: (path: string) => { openSidebarFile(ctx, store, sessionId, path) },
     }),
-  }, SidebarProducedFiles)
+  }, SidebarProducedFiles))
 }
 
 /**
@@ -86,7 +101,8 @@ export function registerTurnTailInterception(ctx: Context, store: SidebarStore):
  */
 export function registerOpenPathInterception(ctx: Context, store: SidebarStore): () => void {
   return wrapOpenPath(ctx.workspaces, {
-    takeoverEnabled: () => store.getPrefs().interceptOpenPath !== false
+    takeoverEnabled: () => !store.getSuspended()
+      && store.getPrefs().interceptOpenPath !== false
       && store.getPrefs().tabsEnabled['editor'] !== false,
     currentSessionId: () => ctx.sessions.list.getSnapshot().current,
     openInSidebar: (path, sessionId) => { openSidebarFile(ctx, store, sessionId, path) },

src/client/lang.ts

@@ -23,6 +23,8 @@ import { toml } from '@codemirror/legacy-modes/mode/toml'
 import { nginx } from '@codemirror/legacy-modes/mode/nginx'
 import { dockerFile } from '@codemirror/legacy-modes/mode/dockerfile'
 import { properties } from '@codemirror/legacy-modes/mode/properties'
+import { csharp, kotlin } from '@codemirror/legacy-modes/mode/clike'
+import { swift } from '@codemirror/legacy-modes/mode/swift'
 
 /** The lowercased file extension of a path ('' when none). */
 export function extOf(path: string): string {
@@ -48,6 +50,9 @@ export function languageKeyForExt(ext: string): string | null {
     case 'yaml': case 'yml': return 'yaml'
     case 'sql': return 'sql'
     case 'java': return 'java'
+    case 'cs': return 'csharp'
+    case 'kt': case 'kts': return 'kotlin'
+    case 'swift': return 'swift'
     case 'c': case 'h': return 'c'
     case 'cc': case 'cpp': case 'cxx': case 'hpp': case 'hh': case 'hxx': return 'cpp'
     case 'rs': return 'rust'
@@ -76,6 +81,9 @@ const FACTORIES: Record<string, () => Language | LanguageSupport> = {
   yaml: () => yaml(),
   sql: () => sql(),
   java: () => java(),
+  csharp: () => StreamLanguage.define(csharp),
+  kotlin: () => StreamLanguage.define(kotlin),
+  swift: () => StreamLanguage.define(swift),
   c: () => cpp(),
   cpp: () => cpp(),
   rust: () => rust(),

src/client/layout.css

@@ -5,12 +5,22 @@
  * panel's width squeeze (margin-right on #root) lands exactly on the
  * conversation output and the input bar, like a VSCode sidebar.
  *
+ * The width rides `calc(100% - var(...))` instead of a bare margin on a
+ * full-width box: some desktop shells (DSH Desktop, #208) set #root to
+ * width:100%, where a margin would overflow the viewport additively —
+ * the calc keeps the box at exactly 100% minus the push in every shell.
+ * Width and margin transition in lockstep (same variable, same duration
+ * and easing), so expand/collapse animates the content width exactly as
+ * the bare-margin version did.
+ *
  * The bottom panel squeezes ONLY the center column — it must not cover the
- * app's own left sidebar or the right panel. The AppFrame's grid items are
- * (#root > div > div:nth-child(2)): sidebarCol, centerCol, detailsCol, so
- * the vertical push lands on the center column alone. The fixed panels
- * cover the vacated strips, which looks seamless because #root's background
- * is the theme base.
+ * app's own left sidebar or the right panel. The anchor is the frame's
+ * center grid item via its stable data attribute ([data-pane="conversation"]
+ * on the centerCol inside [data-dsh-frame]), not a positional path: the
+ * frame's child order also contains an overlay layer and drag handles
+ * (verified against a live DSH 0.1.x page), so nth-child is brittle. A
+ * stretched grid item shrinks by its margins, so the conversation content
+ * (output + input bar) lifts without touching the sidebars.
  *
  * The sizes ride CSS variables updated by the Sidebar shell (0 while
  * collapsed); expand/collapse animates both the margins and the panel
@@ -19,26 +29,66 @@
  */
 #root {
   margin-right: var(--dsh-sidebar-width, 0px);
-  transition: margin-right var(--ds-transition-duration-slow) var(--ds-ease-in-out);
+  width: calc(100% - var(--dsh-sidebar-width, 0px));
+  transition:
+    margin-right var(--ds-transition-duration-slow) var(--ds-ease-in-out),
+    width var(--ds-transition-duration-slow) var(--ds-ease-in-out);
 }
 
-/* The AppFrame's grid items are sidebarCol, centerCol, detailsCol (children
-   1-3 of #root > div) — nth-child(2) is the center column. A stretched grid
-   item shrinks by its margins, so the conversation content (output + input
-   bar) lifts without touching the sidebars. */
-#root > div > div:nth-child(2) {
+/* The AppFrame's center column, anchored by data attributes (see above).
+   Composite selector: DSH 0.1.x versions name the center grid item
+   `[data-pane="conversation"]`, while rc.8-era shells put a
+   `[data-slot="conversation"]` child inside it — both selectors resolve to
+   the SAME element on live pages (verified), and keeping both future-proofs
+   the rule against a host rename without touching shell-specific markup. */
+#root [data-dsh-frame] > [data-pane="conversation"],
+#root :has(> [data-slot="conversation"]) {
   margin-bottom: var(--dsh-sidebar-height, 0px);
   transition: margin-bottom var(--ds-transition-duration-slow) var(--ds-ease-in-out);
 }
 
+/* When the sidebar is collapsed, the toggle cluster reclaims the top-right
+   corner. Push the DSH session header's right padding out so its right-aligned
+   utilities (the "Session log" download capsule) yield the corner instead of
+   hiding under the cluster. The header default right-pads 28px; the 2-button
+   cluster spans right 10→70px, so 78px clears it with an 8px gap. Anchor on
+   the header's slot host wrapper ([data-slot="conversation.session.header"])
+   rather than a positional path: DSH 0.1.x nests the header several levels
+   under the center column. The Sidebar shell toggles the body attribute with
+   the panel open state. */
+body[data-dsh-sidebar-collapsed] [data-slot="conversation.session.header"] > header {
+  padding-right: 78px;
+}
+
 body[data-dsh-sidebar-dragging] #root,
-body[data-dsh-sidebar-dragging] #root > div > div:nth-child(2) {
+body[data-dsh-sidebar-dragging] #root [data-dsh-frame] > [data-pane="conversation"],
+body[data-dsh-sidebar-dragging] #root :has(> [data-slot="conversation"]) {
   transition: none;
 }
 
+/* DSH 0.1.x gives external settings sections a generic gear and exposes no
+   icon field in the settings.section contract. settings-nav-icon.ts marks
+   only this plugin's localized row; render the requested Lucide
+   gallery-horizontal-end SVG as a currentColor mask so it follows the native
+   nav hover/active colors without changing the shell's 16px icon rhythm. */
+[data-dsh-better-sidebar-settings-nav] > svg:first-child {
+  display: none;
+}
+
+[data-dsh-better-sidebar-settings-nav]::before {
+  content: '';
+  flex: none;
+  width: 16px;
+  height: 16px;
+  background: currentColor;
+  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 7v10'/%3E%3Cpath d='M6 5v14'/%3E%3Crect width='12' height='18' x='10' y='3' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
+  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 7v10'/%3E%3Cpath d='M6 5v14'/%3E%3Crect width='12' height='18' x='10' y='3' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
+}
+
 @media (prefers-reduced-motion: reduce) {
   #root,
-  #root > div > div:nth-child(2) {
+  #root [data-dsh-frame] > [data-pane="conversation"],
+  #root :has(> [data-slot="conversation"]) {
     transition: none;
   }
 }

src/client/lazy-chunk.tsx

@@ -0,0 +1,89 @@
+/**
+ * Lazy chunk view wrapper: mounts a component that lives in a lazy chunk,
+ * showing a loading placeholder while the chunk script loads and an error +
+ * retry affordance on failure. Used by the built-in tab/viewer descriptors.
+ *
+ * Contract note: {@link lazyChunkComponent} returns a plain render-prop
+ * function — the descriptor contract is `component: (props) => ReactNode`,
+ * and the repo renders descriptors BOTH ways: Sidebar calls
+ * `descriptor.component(props)` directly, EditorHost renders it via
+ * `createElement`. The wrapper function body therefore contains no hooks;
+ * all state lives in the inner {@link LazyChunkView} component.
+ */
+import { createElement, useEffect, useState, type ComponentType, type ReactNode } from 'react'
+import { loadChunk, type ChunkExports, type ChunkName } from './chunk-loader.ts'
+import { t } from './locales.ts'
+import css from './sidebar.module.css'
+
+interface LazyChunkViewProps<P> {
+  chunk: ChunkName
+  /** Module-level-stable selector (an inline lambda would re-trigger the effect). */
+  pick: (mod: ChunkExports) => ComponentType<P> | undefined
+  props: P
+}
+
+function LazyChunkView<P>({ chunk, pick, props }: LazyChunkViewProps<P>): ReactNode {
+  const [attempt, setAttempt] = useState(0)
+  const [state, setState] = useState<
+    | { status: 'loading' }
+    | { status: 'error'; message: string }
+    | { status: 'ready'; Comp: ComponentType<any> }
+  >({ status: 'loading' })
+
+  useEffect(() => {
+    let cancelled = false
+    setState({ status: 'loading' })
+    loadChunk(chunk).then((mod) => {
+      if (cancelled) return
+      const Comp = pick(mod)
+      if (Comp === undefined) {
+        setState({ status: 'error', message: `[dsh-better-sidebar] chunk "${chunk}" is missing its component` })
+        return
+      }
+      setState({ status: 'ready', Comp })
+    }).catch((error: unknown) => {
+      if (cancelled) return
+      setState({ status: 'error', message: error instanceof Error ? error.message : String(error) })
+    })
+    return () => { cancelled = true }
+  }, [chunk, pick, attempt])
+
+  if (state.status === 'loading') {
+    return <div className={css.editorPlaceholder}>{t('loading')}</div>
+  }
+  if (state.status === 'error') {
+    return (
+      <div className={css.editorError}>
+        <span>{state.message}</span>
+        <button
+          type="button"
+          className={css.terminalRetry}
+          onClick={() => { setAttempt(current => current + 1) }}
+        >
+          {t('terminalRetry')}
+        </button>
+      </div>
+    )
+  }
+  return createElement(state.Comp, props)
+}
+
+/**
+ * Build a descriptor-compatible lazy wrapper for a chunk-resident component.
+ * The returned function is the descriptor `component` itself: it returns an
+ * element and never calls hooks, so both invocation styles (plain function
+ * call and createElement/JSX render) work. `pick` must be a module-level
+ * function (stable identity) — an inline lambda would re-trigger the load
+ * effect on every render.
+ * @param chunk - the chunk name (see chunk-loader.ts).
+ * @param pick - select the component from the chunk's exports.
+ */
+export function lazyChunkComponent<P extends object>(
+  chunk: ChunkName,
+  pick: (mod: ChunkExports) => ComponentType<P> | undefined,
+): (props: P) => ReactNode {
+  return (props: P) => createElement(
+    LazyChunkView as ComponentType<LazyChunkViewProps<P>>,
+    { chunk, pick, props },
+  )
+}

src/client/link-intercept.ts

@@ -1,10 +1,12 @@
 /**
  * Chat/GUI external-link interception: clicking an http(s) link that points
  * OUTSIDE the GUI (chat messages, tool rows, prose mentions) opens the
- * sidebar browser instead of a new browser tab. Gated by BOTH the
- * `browserInterceptLinks` pref and the browser tab's enable switch; a
- * Ctrl/Cmd/Shift/Alt-modified click always bypasses the takeover so the
- * user can still force a real browser tab.
+ * sidebar instead of a new browser tab. Gated by the caller through
+ * `takeoverEnabled(url)` — the `browserInterceptLinks` master, the URL's
+ * protocol flag (`browserInterceptHttp` / `browserInterceptHttps`) and the
+ * target tab's enable switch — and a Ctrl/Cmd/Shift/Alt-modified click
+ * always bypasses the takeover so the user can still force a real browser
+ * tab.
  *
  * Only the GUI's OWN document is watched — links inside the browser tab's
  * sandboxed iframe live in another document and never bubble here (and
@@ -13,7 +15,10 @@
 
 /** The pure decision: the URL to open in the sidebar, or null to let the
  *  click fall through. Extracted so the policy is unit-testable without a
- *  DOM. `anchorHref` must be the ABSOLUTE href (`<a>.href` already is). */
+ *  DOM. `anchorHref` must be the ABSOLUTE href (`<a>.href` already is).
+ *  The protocol/same-origin policy lives HERE; the prefs gates (master +
+ *  protocol flags + target enablement) live in the caller's
+ *  `takeoverEnabled(url)` callback. */
 export function shouldInterceptLink(anchorHref: string, selfOrigin: string): string | null {
   let url: URL
   try {
@@ -23,7 +28,7 @@ export function shouldInterceptLink(anchorHref: string, selfOrigin: string): str
   }
   if (url.protocol !== 'http:' && url.protocol !== 'https:') return null
   // Same-origin links are GUI-internal navigation (settings pages, tool
-  // docs) — never routed into the sidebar browser.
+  // docs) — never routed into the sidebar.
   try {
     if (url.origin === new URL(selfOrigin).origin) return null
   } catch {
@@ -39,11 +44,13 @@ export function isPlainLeftClick(event: { button: number; metaKey: boolean; ctrl
 
 /**
  * Register the document-level click capture that funnels external links
- * into the sidebar browser. Returns the disposer (HMR-safe).
+ * into the sidebar. Returns the disposer (HMR-safe).
  */
 export function registerLinkInterception(opts: {
-  takeoverEnabled: () => boolean
-  /** Open the sidebar browser tab at `url` (the caller resolves the session). */
+  /** Whether the takeover may happen for THIS url (the caller's prefs
+   *  gates: master switch, protocol flag, target enablement). */
+  takeoverEnabled: (url: URL) => boolean
+  /** Open the sidebar tab at `url` (the caller resolves the target type). */
   openInSidebar: (url: string) => void
   /** The GUI's own origin (window.location.origin at registration). */
   selfOrigin: string
@@ -51,13 +58,13 @@ export function registerLinkInterception(opts: {
   const onClick = (event: MouseEvent): void => {
     if (!isPlainLeftClick(event)) return
     if (event.defaultPrevented) return
-    if (!opts.takeoverEnabled()) return
     const target = event.target
     if (target === null || typeof (target as Element).closest !== 'function') return
     const anchor = (target as Element).closest('a[href]') as HTMLAnchorElement | null
     if (anchor === null) return
     const url = shouldInterceptLink(anchor.href, opts.selfOrigin)
     if (url === null) return
+    if (!opts.takeoverEnabled(new URL(url))) return
     event.preventDefault()
     opts.openInSidebar(url)
   }

src/client/locales.ts

@@ -1,17 +1,38 @@
 /**
- * Minimal zh/en copy for the sidebar. The plugin renders outside the slot
- * system's locale seat, so it reads the browser language directly (the DSH
- * locale preference and the browser language agree in practice; both default
- * from navigator.language anyway).
+ * Minimal zh/en copy for the sidebar. The copy follows the DSH i18n system:
+ * the client apply attaches the locale service (`ctx.locale`, provided by
+ * `@deepseek-ai/dsh-client-locale`) through {@link attachLocale}, and
+ * `t()`/`isZh()` resolve the active locale from it — the Host-backed
+ * `locale.preference` wins over the raw browser language and switches live.
+ * Without an attached service (standalone/test compositions) the browser
+ * language is used, matching the previous behavior. The dictionaries are
+ * also registered into the DSH locale registry under {@link LOCALE_NS}.
  */
 
-const zh = {
+/** The zh dictionary (also registered into the DSH locale registry under {@link LOCALE_NS}). */
+export const zh = {
+  files: '文件',
   explorer: '资源管理器',
   git: '源代码管理',
   terminal: '终端',
   editor: '编辑器',
+  editorExplorer: '文件打开方式',
+  editorExplorerDesc: '控制文件打开方式',
+  editorExplorerMerged: '合并',
+  editorExplorerMergedDesc: '文件在同一窗口内原地切换；新窗口默认展开文件树',
+  editorExplorerSplit: '独立',
+  editorExplorerSplitDesc: '无路径窗口即资源管理器（仅文件树）；文件各自新开窗口（带文件树，默认收起）',
+  editorTreeToggle: '文件树面板',
+  editorPathPlaceholder: '输入文件路径（相对会话目录或绝对路径），Enter 打开',
+  editorSearchPlaceholder: '按文件名搜索…',
+  editorSearchNoResults: '无匹配文件',
+  editorSearchTruncated: '结果过多，仅显示部分匹配',
+  editorEmptyHint: '从右侧文件树或上方路径输入框选择文件开始预览',
+  openFileNewTab: '在新 Tab 中打开',
+  openFileSide: '在侧边打开',
   newTab: '新建标签页',
   openExplorer: '资源管理器',
+  brokenSymlink: '失效的软链接',
   openGit: 'Git 面板',
   newTerminal: '新终端',
   terminalLimit: '终端数量已达上限 (3)',
@@ -23,8 +44,16 @@ const zh = {
   terminalError: '终端连接失败',
   terminalConnectFailed: '终端多次连接失败',
   terminalRetry: '重试',
+  terminalDepsFailed: '终端依赖 node-pty 加载失败',
+  terminalDepsHint: '在 DSH 所在环境的终端或 cmd 中执行以下命令修复，然后点重试（node-pty 与 DSH 核心保持同一版本）：',
+  terminalDepsProfile: '（检测到 profile：{profile}）',
   preview: '预览',
   edit: '编辑',
+  mermaidError: 'Mermaid 渲染失败',
+  mermaidZoomIn: '放大',
+  mermaidZoomOut: '缩小',
+  mermaidZoomReset: '重置',
+  mermaidZoomHint: '滚轮缩放 · 拖拽平移 · Esc 关闭',
   refresh: '刷新',
   save: '保存',
   saved: '已保存',
@@ -96,10 +125,27 @@ const zh = {
   openEditor: '打开编辑器',
   gitDetail: '查看变更详情',
   referenceFile: '@文件',
+  addToConversation: '添加到对话',
   copyRelative: '复制相对地址',
   copyAbsolute: '复制绝对地址',
   download: '下载',
+  uploadFiles: '上传文件',
+  uploadFolder: '上传文件夹',
+  uploadHere: '上传到此处',
+  uploadDropHint: '拖拽文件/文件夹到此处上传',
+  uploadDropChat: '拖放到聊天区：添加图片到对话',
+  uploadTo: '上传到 {dir}',
+  uploadingTo: '正在上传到 {dir}…',
+  uploadProgress: '正在上传 {done}/{total}: {name}',
+  uploadDone: '已上传 {count} 个文件',
+  uploadFailed: '上传失败：{error}',
+  uploadFailedUnknown: '未知错误',
+  uploadTooLarge: '文件过大，超出上传上限',
+  uploadCancelled: '上传已取消',
   settingsNav: '侧边卡片',
+  settingsIntro: '管理侧边卡片的显示内容与默认行为',
+  settingsPopupDesc: '为「{feature}」配置相关选项',
+  settingsDone: '完成',
   settingsOpenTitle: '新会话默认打开',
   settingsOpenDesc: '新建会话时自动展开侧边卡片；已存在的会话保持各自布局',
   settingsWidthTitle: '默认宽度占比',
@@ -107,24 +153,44 @@ const zh = {
   settingsWidthSuffix: '%',
   settingsOpenPathTitle: '聊天区文件在侧边栏打开',
   settingsOpenPathDesc: '在聊天里点击文件链接（工具行、产物列表、文件提及）时，在侧边栏编辑器中打开，不再调用系统默认应用',
+  settingsTitleBarTitle: '位置兼容模式',
+  settingsTitleBarDesc: '选择顶栏兼容方案：自动检测（默认，保守）/ DSH官方Web / 已知桌面壳 / 自定义方案（下移距离 + 自定义 CSS）',
+  settingsTitleBarStripTitle: '下移距离',
+  settingsTitleBarStripDesc: '标题栏条带高度：侧边栏按钮与内容下移的像素数（0–120，默认 40；自定义方案下生效）',
+  settingsSchemeAutoTitle: '自动检测',
+  settingsSchemeAutoDesc: '保守方案：仅在 Window Controls Overlay 标准 API 可用时按真实标题栏高度让位；网页环境下不做任何修改',
+  settingsSchemeWebTitle: 'DSH官方Web',
+  settingsSchemeWebDesc: '显式声明运行在官方网页版：不做任何适配（连标准 WCO 几何也不适用）',
+  settingsSchemeCustomTitle: '自定义方案',
+  settingsSchemeCustomDesc: '完全由你控制：注入自定义 CSS（可覆盖内置样式），并指定标题栏下移距离',
+  settingsSchemeDetectedSuffix: '已检测',
+  settingsCustomCssTitle: '自定义 CSS',
+  settingsCustomCssDesc: '追加到页面末尾的样式（同优先级下后写胜出；覆盖 JS 内联变量需用 !important）',
+  settingsCustomCssPlaceholder: '/* 例：为自绘标题栏的壳预留 36px */\nhtml[data-dsh-title-bar-height="36"] {\n  --dsh-title-bar-strip: 36px !important;\n}',
   settingsSaveFailed: '保存失败',
   settingsConflict: '设置已被其他窗口修改，请重试',
   binaryNoPreview: '此文件类型不支持预览',
   downloadToView: '下载查看',
-  officeTooLarge: '文件过大，无法预览',
-  officeCorrupt: '文件损坏或格式无效',
-  officeEncrypted: '不支持加密文件',
-  officeLoadFailed: 'Office 预览组件加载失败',
-  previousSlide: '上一页',
-  nextSlide: '下一页',
-  zoom: '缩放',
-  zoomHint: 'Alt + 滚轮',
-  settingsSubagentTitle: '检测到子代理时自动展开子代理页面',
-  settingsSubagentDesc: '当前会话产生新的子代理时，自动展开侧边栏并打开子代理页面；关闭后需手动打开',
+  settingsSubagentTitle: '检测到子代理时自动展开任务管理页',
+  settingsSubagentDesc: '当前会话产生新的子代理时，自动展开侧边栏并打开任务管理页；关闭后需手动打开',
+  settingsJobsTitle: '有新后台任务时自动展开后台任务页',
+  settingsJobsDesc: '当前会话出现新的后台任务时，自动展开侧边栏并打开后台任务页（每个新任务都会触发）；关闭后需手动打开',
   settingsToolsTitle: '为模型注入终端工具',
   settingsToolsDesc: '开启后，模型可通过 terminal_create 等 8 个工具创建并操作侧边栏终端（默认关闭）',
   settingsBottomTerminalTitle: '底部面板首次展开自动开终端',
   settingsBottomTerminalDesc: '每次会话中第一次展开底部面板时，尝试在底部面板自动打开一个新终端标签（终端数量上限仍会限制；默认开启）',
+  settingsFontFamilyTitle: '终端字体',
+  settingsFontFamilyDesc: '自定义终端字体族（CSS font-family，如 "JetBrains Mono", monospace；留空跟随主题等宽字体）',
+  settingsFontFamilyPlaceholder: '"JetBrains Mono", monospace',
+  settingsFontSizeTitle: '终端字号',
+  settingsFontSizeDesc: '终端字号（9–32，默认 13）',
+  settingsFontSizeSuffix: 'px',
+  settingsShellTitle: 'Shell 路径',
+  settingsShellDesc: 'UI 与模型终端启动的 shell（绝对路径或可执行名）。留空按既有顺序解析：yaml 的 config.shell → $SHELL / 登录 shell / Windows 的 powershell.exe。对之后打开的终端生效',
+  settingsShellPlaceholder: '如 /bin/zsh（留空自动解析）',
+  settingsShellArgsTitle: 'Shell 参数',
+  settingsShellArgsDesc: '显式 shell 启动参数，空格分隔；非空时完全替换默认参数（与 yaml 的 shellArgs 契约一致）',
+  settingsShellArgsPlaceholder: '如 -l（留空用默认参数）',
   settingsTabsTitle: '侧边栏内容',
   settingsViewersTitle: '文件预览',
   settingsGeneralTitle: '常规',
@@ -132,9 +198,6 @@ const zh = {
   settingsViewerCatchAll: '兜底：任意文件',
   viewerImage: '图片',
   viewerPdf: 'PDF',
-  viewerDocx: 'Word 文档',
-  viewerXlsx: 'Excel 表格',
-  viewerPptx: 'PPT 演示',
   viewerMarkdown: 'Markdown',
   viewerCode: '代码',
   viewerBinary: '二进制下载',
@@ -160,13 +223,17 @@ const zh = {
   settingsBrowserSandboxTitle: '关闭浏览器沙箱（不安全）',
   settingsBrowserSandboxDesc: '关闭后，访问的任何网站都将与界面同源运行，可读取会话数据并冒充你的登录状态。仅对完全可信的站点开启',
   settingsBrowserLinksTitle: '聊天区外链在侧边栏打开',
-  settingsBrowserLinksDesc: '开启后，点击聊天或界面中的 http/https 外链时在侧边栏浏览器中打开，不再弹出新窗口；Ctrl/Cmd 点击可临时放行',
+  settingsBrowserLinksDesc: '开启后，点击聊天或界面中的外链时在侧边栏打开，不再弹出新窗口；HTTP 与 HTTPS 可分别通过下方开关控制；Ctrl/Cmd 点击可临时放行',
+  settingsBrowserHttpTitle: '侧边打开HTTP网页',
+  settingsBrowserHttpDesc: '开启后，点击聊天或界面中的 HTTP 外链时在侧边栏打开（声明了 urlTarget 的插件页面优先）；Ctrl/Cmd 点击可临时放行',
+  settingsBrowserHttpsTitle: '侧边打开HTTPS网页',
+  settingsBrowserHttpsDesc: '开启后，点击聊天或界面中的 HTTPS 外链时在侧边栏打开。默认关闭：多数 HTTPS 站点拒绝被嵌入，走系统浏览器更顺畅',
   browserOpenExternal: '在浏览器中打开',
   browserEmbedBlocked: '{host} 拒绝了嵌入请求',
   browserEmbedBlockedDesc: '该站点通过 X-Frame-Options / frame-ancestors 禁止在其它页面中显示，无法在侧边栏内加载。可在浏览器中直接打开',
   browserEmbedAnyway: '仍然加载',
-  subagent: '子代理',
-  openSubagent: '子代理',
+  subagent: '任务管理',
+  openSubagent: '任务管理',
   subagentMainAgent: '主代理',
   subagentEmpty: '暂无子代理',
   subagentEmptyDesc: '当前主代理派生的子代理将显示在这里',
@@ -180,15 +247,99 @@ const zh = {
   subagentDiagUnsupported: '不支持的条目',
   subagentDiagUnavailable: '不可用',
   subagentThinking: '思考中…',
+  sideChat: '侧边对话(beta)',
+  sideChatNew: '新建对话',
+  sideChatUntitled: '新对话',
+  sideChatEmpty: '暂无侧边对话',
+  sideChatEmptyDesc: '每个侧边对话是标签栏里的独立 Tab，继承当前会话的上下文运行，不会进入主会话',
+  sideChatCreating: '正在创建侧边对话…',
+  sideChatRetry: '重试',
+  sideChatThreads: '切换线程 / 新建',
+  sideChatSave: '保存为新会话',
+  sideChatSaveTitle: '把该线程提升为顶层会话，出现在主会话列表中',
+  sideChatSaved: '已保存为新会话',
+  sideChatNoTurn: '至少完成一轮对话后才能保存',
+  sideChatPendingDrop: '最后一条未完成的追问不会包含在新会话中',
+  sideChatFirstPlaceholder: '输入第一个问题，已继承当前会话上下文…',
+  sideChatComposerPlaceholder: '追问…',
+  sideChatThinking: '正在深入…',
+  sideChatThink: '思考过程',
+  sideChatInjection: '已注入上下文',
+  sideChatSend: '发送',
+  sideChatCancel: '停止',
+  sideChatCancelTitle: '中止当前回合（保留队列）',
+  sideChatClose: '关闭线程',
+  sideChatCloseTitle: '释放线程的 agent（历史保留）',
+  sideChatError: '侧边对话出错：{message}',
+  jobs: '后台任务',
+  jobsCount: '{count} 个后台任务',
+  jobsCountRunning: '{count} 个后台任务 · {running} 运行中',
+  jobStatusRunning: '运行中',
+  jobStatusStopping: '终止中',
+  jobStatusCompleted: '已完成',
+  jobStatusKilled: '已终止',
+  jobStatusFailed: '失败',
+  jobDurationSeconds: '{seconds} 秒',
+  jobDurationMinutes: '{minutes} 分 {seconds} 秒',
+  jobDurationHours: '{hours} 小时 {minutes} 分',
+  jobViewOutput: '查看输出',
+  jobHideOutput: '收起输出',
+  jobNoOutput: '暂无输出',
+  jobNotReadYet: '等待模型读取该任务的输出（模型执行 job_output 后，输出会显示在这里）',
+  jobOutputTruncated: '输出过长，已截断显示',
+  jobOutputError: '输出读取失败',
+  jobKill: '终止',
+  jobKillConfirm: '再次点击确认终止',
+  jobKillError: '终止失败',
+  addPluginsTabCard: '添加 Tab 插件',
+  addPluginsTabCardDesc: '注册新的侧边栏页面',
+  addPluginsViewerCard: '添加预览插件',
+  addPluginsViewerCardDesc: '注册新的文件类型预览',
+  addPluginsTabDesc: '侧边栏页面（Tab）可以由插件扩展。插件通过 ctx.betterSidebar 服务注册；点击「安装」复制安装命令，粘贴到 DSH 所在环境的终端执行。',
+  addPluginsViewerDesc: '文件预览器可以由插件扩展。插件通过 ctx.betterSidebar 服务注册；点击「安装」复制安装命令，粘贴到 DSH 所在环境的终端执行。',
+  addPluginsBrowseMore: '在 GitHub 上浏览更多插件（topic: dsh-better-sidebar）',
+  addPluginsSearch: '搜索插件名称 / 描述…',
+  addPluginsNoMatch: '没有匹配的插件',
+  addPluginsRecommended: '推荐插件',
+  addPluginsEmpty: '暂未收录插件，欢迎在 GitHub topic 下发布你的插件',
+  openPlugin: '跳转',
+  copyInstall: '复制安装命令',
+  pluginOfficeDesc: '为 better-sidebar 编辑器提供 Office 三件套预览（.docx / .xlsx / .pptx），把重型 Office 渲染库拆出主包、按需安装',
+  pluginFlowglassDesc: '实时会话流程图：三列泳道展示用户、助手与工具调用，支持并行分组、子代理支线、逐层钻取和实时状态；安装 better-sidebar 后注册原生「流镜」Tab，未安装时保留独立抽屉',
+  pluginGitForgeDesc: 'better-sidebar「Git 凭据」Tab：GitHub/Gitea 等 Forge 账号库 + 按项目授权 + push 策略硬拦；token 仅存本地 secrets，不进模型上下文；提供只读 GitForge 工具与 agent HTTPS credential helper',
+  pluginGitRemotesDesc: 'better-sidebar Git 远程 Tab：看分支/上游/ahead-behind，fetch（可 prune）、ff-only pull、确认后才 push。不替换内置 Git 的暂存/提交，也不提供 force-push 或模型自动推送',
+  pluginSentinelDesc: '条件驱动的 agent 唤醒系统：文件/进程/端口/HTTP/命令/webhook 传感器，条件达成自动唤醒休眠会话；注册「哨兵」Tab 展示服务器全局监控表',
+  pluginSidebarQaDesc: '基于 better-sidebar 的划选提问tab分页: 对话划选 → 右侧面板提问 → 同工作区独立追问会话（❓追问·主题）：快速无思考模型压缩主对话上下文后与引文一起注入，不打断主对话；追问可嵌套、可继续、可归档',
+  pluginSshTunnelDesc: 'better-sidebar「SSH 隧道」Tab：多机主机清单 + 按项目授权 + 密钥本地保管；模型工具 SSHManager（exec/SFTP/会话策略）；中央交互终端与双栏 SFTP',
+  pluginTurnReviewDesc: '对「刚刚这一回合」的 diff 做 Approve / Request changes 的人闸门：只审上一回合，不 fork 会话；文件按主会话/子代理/未归因分组，按文件勾选打回 + 可选评语，点文件先看回合开始快照 vs 现在的 diff。不是 /rewind',
+  pluginVideoPreviewDesc: '在 better-sidebar 编辑器内联预览视频文件（.mp4/.webm/.mov/.mkv/.avi 等），自带支持 HTTP Range（206）的 /video 宿主路由，可拖动进度条、不受 20MB mediaLimit 限制',
+  pluginDocsPanelDesc: 'DSH 侧边栏里的「全局文档」：全局 Markdown 笔记，任何工作区随时可读——列表点选阅读、悬浮大纲跳转、Chrome / VS Code 外部打开、代码复制，目录可配置（默认 ~/.dsh/docs）',
 }
 
-const en: Record<keyof typeof zh, string> = {
+/** The en dictionary (key-set-equal to zh, enforced by the type annotation). */
+export const en: Record<keyof typeof zh, string> = {
+  files: 'Files',
   explorer: 'Explorer',
   git: 'Source Control',
   terminal: 'Terminal',
   editor: 'Editor',
+  editorExplorer: 'File open behavior',
+  editorExplorerDesc: 'Controls how files open',
+  editorExplorerMerged: 'Merged',
+  editorExplorerMergedDesc: 'Files switch in place in the same window; new windows start with the tree open',
+  editorExplorerSplit: 'Separate',
+  editorExplorerSplitDesc: 'Path-less windows are the standalone explorer (tree only); each file opens its own window (tree docked, closed by default)',
+  editorTreeToggle: 'File tree panel',
+  editorPathPlaceholder: 'File path (relative to the session directory or absolute), Enter to open',
+  editorSearchPlaceholder: 'Search files by name…',
+  editorSearchNoResults: 'No matching files',
+  editorSearchTruncated: 'Too many results — showing a partial list',
+  editorEmptyHint: 'Pick a file from the tree panel or the path input above to start previewing',
+  openFileNewTab: 'Open in New Tab',
+  openFileSide: 'Open to the Side',
   newTab: 'New tab',
   openExplorer: 'Explorer',
+  brokenSymlink: 'Broken symlink',
   openGit: 'Git panel',
   newTerminal: 'New terminal',
   terminalLimit: 'Terminal limit reached (3)',
@@ -200,8 +351,16 @@ const en: Record<keyof typeof zh, string> = {
   terminalError: 'Terminal connection failed',
   terminalConnectFailed: 'Terminal failed to connect repeatedly',
   terminalRetry: 'Retry',
+  terminalDepsFailed: 'Terminal dependency node-pty failed to load',
+  terminalDepsHint: 'Run the command below in a terminal or cmd on the DSH machine to repair it, then retry (node-pty stays in sync with the DSH core version):',
+  terminalDepsProfile: ' (detected profile: {profile})',
   preview: 'Preview',
   edit: 'Edit',
+  mermaidError: 'Mermaid render failed',
+  mermaidZoomIn: 'Zoom in',
+  mermaidZoomOut: 'Zoom out',
+  mermaidZoomReset: 'Reset',
+  mermaidZoomHint: 'Scroll to zoom · drag to pan · Esc to close',
   refresh: 'Refresh',
   save: 'Save',
   saved: 'Saved',
@@ -273,10 +432,27 @@ const en: Record<keyof typeof zh, string> = {
   openEditor: 'Open editor',
   gitDetail: 'View change details',
   referenceFile: '@file',
+  addToConversation: 'Add to conversation',
   copyRelative: 'Copy relative path',
   copyAbsolute: 'Copy absolute path',
   download: 'Download',
+  uploadFiles: 'Upload files',
+  uploadFolder: 'Upload folder',
+  uploadHere: 'Upload here',
+  uploadDropHint: 'Drop files/folders here to upload',
+  uploadDropChat: 'Drop onto the chat to add images',
+  uploadTo: 'Upload into {dir}',
+  uploadingTo: 'Uploading into {dir}…',
+  uploadProgress: 'Uploading {done}/{total}: {name}',
+  uploadDone: 'Uploaded {count} file(s)',
+  uploadFailed: 'Upload failed: {error}',
+  uploadFailedUnknown: 'Unknown error',
+  uploadTooLarge: 'File too large (over the upload limit)',
+  uploadCancelled: 'Upload cancelled',
   settingsNav: 'Side card',
+  settingsIntro: 'Manage what the side card shows and how it behaves',
+  settingsPopupDesc: 'Configure related options for {feature}',
+  settingsDone: 'Done',
   settingsOpenTitle: 'Open by default for new conversations',
   settingsOpenDesc: 'Expand the side card automatically for brand-new conversations; existing conversations keep their own layouts',
   settingsWidthTitle: 'Default width share',
@@ -284,24 +460,44 @@ const en: Record<keyof typeof zh, string> = {
   settingsWidthSuffix: '%',
   settingsOpenPathTitle: 'Open chat files in the sidebar',
   settingsOpenPathDesc: 'Open file links in the chat (tool rows, produced files, mentions) in the sidebar editor instead of the system default app',
+  settingsTitleBarTitle: 'Position compatibility mode',
+  settingsTitleBarDesc: 'Pick the title-bar compatibility scheme: auto-detect (default, conservative) / DSH official web / known desktop shells / custom (shift distance + custom CSS)',
+  settingsTitleBarStripTitle: 'Shift distance',
+  settingsTitleBarStripDesc: 'Title-bar strip height: how far the sidebar buttons and content move down in px (0–120, default 40; applies under the custom scheme)',
+  settingsSchemeAutoTitle: 'Auto-detect',
+  settingsSchemeAutoDesc: 'Conservative: only the standard Window Controls Overlay API contributes (real caption-overlay height); plain web environments get no modification',
+  settingsSchemeWebTitle: 'DSH official web',
+  settingsSchemeWebDesc: 'Explicitly declare the official web UI: no adaptation at all (not even standard WCO geometry)',
+  settingsSchemeCustomTitle: 'Custom',
+  settingsSchemeCustomDesc: 'Full control: inject custom CSS (can override built-in styles) and set the title-bar shift distance',
+  settingsSchemeDetectedSuffix: 'detected',
+  settingsCustomCssTitle: 'Custom CSS',
+  settingsCustomCssDesc: 'Styles appended at the end of the page (later in the cascade wins ties; use !important to override JS-written inline variables)',
+  settingsCustomCssPlaceholder: '/* e.g. reserve 36px for a shell with a custom-drawn title bar */\nhtml[data-dsh-title-bar-height="36"] {\n  --dsh-title-bar-strip: 36px !important;\n}',
   settingsSaveFailed: 'Failed to save',
   settingsConflict: 'The setting changed in another window — please retry',
   binaryNoPreview: 'This file type cannot be previewed',
   downloadToView: 'Download to view',
-  officeTooLarge: 'File too large to preview',
-  officeCorrupt: 'File is corrupt or in an invalid format',
-  officeEncrypted: 'Encrypted files are not supported',
-  officeLoadFailed: 'Office preview component failed to load',
-  previousSlide: 'Previous',
-  nextSlide: 'Next',
-  zoom: 'Zoom',
-  zoomHint: 'Alt + wheel',
-  settingsSubagentTitle: 'Auto-open the Subagent page when a subagent appears',
-  settingsSubagentDesc: 'Expand the side card and open the Subagent page when the current conversation spawns a new subagent; turn off to open it manually',
+  settingsSubagentTitle: 'Auto-open the Tasks page when a subagent appears',
+  settingsSubagentDesc: 'Expand the side card and open the Tasks page when the current conversation spawns a new subagent; turn off to open it manually',
+  settingsJobsTitle: 'Auto-open the Jobs page on a new background job',
+  settingsJobsDesc: 'Expand the side card and open the Jobs page whenever a new background job appears for the current conversation (every new job triggers); turn off to open it manually',
   settingsToolsTitle: 'Inject terminal tools for the model',
   settingsToolsDesc: 'When enabled, the model can create and drive sidebar terminals through the 8 terminal_* tools (off by default)',
   settingsBottomTerminalTitle: 'Auto-open a terminal on the bottom panel\'s first expansion',
   settingsBottomTerminalDesc: 'When the bottom panel is expanded for the first time in a session, try to open a fresh terminal tab there (the terminal quota still applies; on by default)',
+  settingsFontFamilyTitle: 'Terminal font family',
+  settingsFontFamilyDesc: 'Custom terminal font family (a CSS font-family stack like "JetBrains Mono", monospace; leave empty to follow the theme\'s monospace font)',
+  settingsFontFamilyPlaceholder: '"JetBrains Mono", monospace',
+  settingsFontSizeTitle: 'Terminal font size',
+  settingsShellTitle: 'Shell path',
+  settingsShellDesc: 'Shell spawned for UI and model terminals (absolute path or bare executable). Empty keeps the legacy order: yaml config.shell → $SHELL / login shell / Windows powershell.exe. Applies to terminals opened afterwards',
+  settingsShellPlaceholder: 'e.g. /bin/zsh (empty = auto)',
+  settingsShellArgsTitle: 'Shell arguments',
+  settingsShellArgsDesc: 'Explicit shell arguments, space-separated; when non-empty they fully replace the defaults (same contract as the yaml shellArgs)',
+  settingsShellArgsPlaceholder: 'e.g. -l (empty = defaults)',
+  settingsFontSizeDesc: 'Terminal font size in px (9–32, default 13)',
+  settingsFontSizeSuffix: 'px',
   settingsTabsTitle: 'Sidebar content',
   settingsViewersTitle: 'File viewers',
   settingsGeneralTitle: 'General',
@@ -309,9 +505,6 @@ const en: Record<keyof typeof zh, string> = {
   settingsViewerCatchAll: 'Catch-all: any file',
   viewerImage: 'Image',
   viewerPdf: 'PDF',
-  viewerDocx: 'Word',
-  viewerXlsx: 'Excel',
-  viewerPptx: 'PowerPoint',
   viewerMarkdown: 'Markdown',
   viewerCode: 'Code',
   viewerBinary: 'Binary download',
@@ -337,13 +530,17 @@ const en: Record<keyof typeof zh, string> = {
   settingsBrowserSandboxTitle: 'Disable browser sandbox (unsafe)',
   settingsBrowserSandboxDesc: 'With the sandbox off, any visited site runs with the same origin as the GUI: it can read session data and act as your logged-in session. Only enable for fully trusted sites',
   settingsBrowserLinksTitle: 'Open chat external links in the sidebar',
-  settingsBrowserLinksDesc: 'When on, clicking an http/https external link in the chat or GUI opens the sidebar browser instead of a new window; Ctrl/Cmd+click always bypasses',
+  settingsBrowserLinksDesc: 'When on, clicking an external link in the chat or GUI opens the sidebar instead of a new window; HTTP and HTTPS are controlled separately by the switches below; Ctrl/Cmd+click always bypasses',
+  settingsBrowserHttpTitle: 'Open HTTP pages in the sidebar',
+  settingsBrowserHttpDesc: 'When on, clicking an HTTP external link in the chat or GUI opens the sidebar (plugin pages declaring urlTarget win); Ctrl/Cmd+click always bypasses',
+  settingsBrowserHttpsTitle: 'Open HTTPS pages in the sidebar',
+  settingsBrowserHttpsDesc: 'When on, clicking an HTTPS external link in the chat or GUI opens the sidebar. Off by default: most HTTPS sites refuse to be embedded, so the system browser is the smoother default',
   browserOpenExternal: 'Open in browser',
   browserEmbedBlocked: '{host} refused to be embedded',
   browserEmbedBlockedDesc: 'The site forbids being displayed inside other pages (X-Frame-Options / frame-ancestors), so it cannot load in the sidebar. Open it directly in your browser instead.',
   browserEmbedAnyway: 'Load anyway',
-  subagent: 'Subagents',
-  openSubagent: 'Subagents',
+  subagent: 'Tasks',
+  openSubagent: 'Tasks',
   subagentMainAgent: 'Main agent',
   subagentEmpty: 'No subagents',
   subagentEmptyDesc: 'Subagents spawned under the main agent will appear here',
@@ -357,15 +554,111 @@ const en: Record<keyof typeof zh, string> = {
   subagentDiagUnsupported: 'Unsupported',
   subagentDiagUnavailable: 'Unavailable',
   subagentThinking: 'Thinking…',
+  sideChat: 'Side Chat (beta)',
+  sideChatNew: 'New thread',
+  sideChatUntitled: 'New thread',
+  sideChatEmpty: 'No side conversations',
+  sideChatEmptyDesc: 'Every side conversation is its own tab in the tab strip — it inherits the current session\'s context and never enters the main conversation',
+  sideChatCreating: 'Creating side conversation…',
+  sideChatRetry: 'Retry',
+  sideChatThreads: 'Switch thread / new',
+  sideChatSave: 'Save as new session',
+  sideChatSaveTitle: 'Promote this thread to a top-level session in the main session list',
+  sideChatSaved: 'Saved as a new session',
+  sideChatNoTurn: 'Save is available after the first completed turn',
+  sideChatPendingDrop: 'The last unanswered follow-up will not be included in the saved session',
+  sideChatFirstPlaceholder: 'Ask the first question — context inherited…',
+  sideChatComposerPlaceholder: 'Ask a follow-up…',
+  sideChatThinking: 'Deep diving…',
+  sideChatThink: 'Thinking',
+  sideChatInjection: 'Context injected',
+  sideChatSend: 'Send',
+  sideChatCancel: 'Stop',
+  sideChatCancelTitle: 'Abort the running turn (queued work is kept)',
+  sideChatClose: 'Close thread',
+  sideChatCloseTitle: 'Release the thread\'s agent (history is kept)',
+  sideChatError: 'Side Chat error: {message}',
+  jobs: 'Background jobs',
+  jobsCount: '{count} background jobs',
+  jobsCountRunning: '{count} background jobs · {running} running',
+  jobStatusRunning: 'Running',
+  jobStatusStopping: 'Stopping',
+  jobStatusCompleted: 'Completed',
+  jobStatusKilled: 'Killed',
+  jobStatusFailed: 'Failed',
+  jobDurationSeconds: '{seconds}s',
+  jobDurationMinutes: '{minutes}m {seconds}s',
+  jobDurationHours: '{hours}h {minutes}m',
+  jobViewOutput: 'View output',
+  jobHideOutput: 'Hide output',
+  jobNoOutput: 'No output yet',
+  jobNotReadYet: 'Waiting for the model to read this job; its output appears here once the model runs job_output',
+  jobOutputTruncated: 'Output truncated',
+  jobOutputError: 'Failed to read output',
+  jobKill: 'Kill',
+  jobKillConfirm: 'Click again to confirm kill',
+  jobKillError: 'Kill failed',
+  addPluginsTabCard: 'Add tab plugins',
+  addPluginsTabCardDesc: 'Register a new sidebar page',
+  addPluginsViewerCard: 'Add preview plugins',
+  addPluginsViewerCardDesc: 'Register a file-type preview',
+  addPluginsTabDesc: 'Sidebar pages (tabs) can be extended by plugins. Plugins register through the ctx.betterSidebar service; clicking Install copies the install command — paste it into a terminal where your DSH profile lives and run it.',
+  addPluginsViewerDesc: 'File previewers can be extended by plugins. Plugins register through the ctx.betterSidebar service; clicking Install copies the install command — paste it into a terminal where your DSH profile lives and run it.',
+  addPluginsBrowseMore: 'Browse more plugins on GitHub (topic: dsh-better-sidebar)',
+  addPluginsSearch: 'Search by plugin name or description…',
+  addPluginsNoMatch: 'No plugins match',
+  addPluginsRecommended: 'Recommended plugins',
+  addPluginsEmpty: 'No plugins curated yet — publish yours under the GitHub topic',
+  openPlugin: 'Open',
+  copyInstall: 'Copy install command',
+  pluginOfficeDesc: 'Office-suite preview (.docx / .xlsx / .pptx) for the better-sidebar editor, keeping the heavy Office render libraries out of the core bundle',
+  pluginFlowglassDesc: 'Live session flowgraph with three lanes for user, assistant, and tool calls, plus parallel groups, sub-agent branches, drill-down, and live status; registers a native Flowglass tab when better-sidebar is installed and keeps its standalone drawer as a fallback',
+  pluginGitForgeDesc: 'Git Forge tab: GitHub/Gitea (and other forge) account library + per-project grants + hard push policy; tokens stay in local secrets (never in model context); read-only GitForge tool and agent HTTPS credential helper',
+  pluginGitRemotesDesc: 'Git Remotes tab: branch/upstream/ahead-behind, fetch (optional prune), ff-only pull, and push only after an in-tab confirm. Does not replace the built-in Git stage/commit tab, and does not offer force-push or a model auto-push tool',
+  pluginSentinelDesc: 'Condition-driven agent wakeup: file/process/port/http/command/webhook sensors wake dormant sessions when conditions fire; registers a "Sentinel" tab with the server-wide watch table',
+  pluginSidebarQaDesc: 'Select-and-ask: Select conversation text → ask in the right-side panel → a dedicated follow-up session (❓追问) in the same workspace; a fast no-thinking model compresses the main context and injects it with the quote, without interrupting the main conversation. Follow-ups nest, continue, and archive',
+  pluginSshTunnelDesc: 'SSH Tunnel tab: multi-host inventory + per-project grants + local secrets; SSHManager tool (exec/SFTP/session strategies); center interactive terminal and dual-pane SFTP',
+  pluginTurnReviewDesc: 'A human gate on the just-finished turn: Approve / Request changes per path with an optional comment; paths grouped by main session / subagent / unattributed; inline snapshot-vs-now diff before you decide. No fork, no /rewind',
+  pluginVideoPreviewDesc: 'Inline video preview (.mp4/.webm/.mov/.mkv/.avi etc.) for the better-sidebar editor, backed by a dedicated /video host route with HTTP Range (206) support — scrubbing works and files are not capped by the 20MB mediaLimit',
+  pluginDocsPanelDesc: 'Global docs in the DSH sidebar: read your own Markdown notes from any workspace — a file list, an outline, open in Chrome / VS Code, and copy buttons; the docs directory is configurable (default ~/.dsh/docs)',
 }
 
-/** Translate a copy key in the browser's language (zh → zh, else en). */
+/**
+ * The dictionary namespace this plugin owns in the DSH locale registry
+ * (`'sidebar'` is taken by DSH's own ui-sidebar, hence this distinct name).
+ */
+export const LOCALE_NS = 'betterSidebar'
+
+/** The DSH locale service attached by the client apply (absent → browser detection). */
+let localeService: { getSnapshot(): { active: string } } | undefined
+
+/**
+ * Attach (or detach, with undefined) the DSH locale service. The sidebar
+ * mounts its own React root outside the slot system's locale seat, so the
+ * service rides this module-level holder: components keep calling the plain
+ * `t()` function, and the Sidebar root's locale subscription re-renders the
+ * whole tree on switches.
+ */
+export function attachLocale(service: { getSnapshot(): { active: string } } | undefined): void {
+  localeService = service
+}
+
+/**
+ * The active locale id ('zh' | 'en'): the DSH locale service's snapshot when
+ * attached, else the browser language.
+ */
+function activeLocale(): string {
+  return localeService?.getSnapshot().active
+    ?? (typeof navigator !== 'undefined' ? navigator.language : '')
+    ?? 'en'
+}
+
+/** Translate a copy key in the active locale (zh → zh, else en). */
 export type CopyKey = keyof typeof zh
 
 /** Translate a copy key; `{name}` placeholders interpolate from `params`. */
 export function t(key: CopyKey, params?: Record<string, string | number>): string {
-  const lang = typeof navigator !== 'undefined' ? navigator.language : 'en'
-  const dict = lang.toLowerCase().startsWith('zh') ? zh : en
+  const dict = activeLocale().toLowerCase().startsWith('zh') ? zh : en
   let text = dict[key]
   if (params !== undefined) {
     for (const [name, value] of Object.entries(params)) {
@@ -375,9 +668,9 @@ export function t(key: CopyKey, params?: Record<string, string | number>): strin
   return text
 }
 
-/** Whether the browser language is Chinese (used for selectors). */
+/** Whether the active locale is Chinese (used for selectors). */
 export function isZh(): boolean {
-  return typeof navigator !== 'undefined' && navigator.language.toLowerCase().startsWith('zh')
+  return activeLocale().toLowerCase().startsWith('zh')
 }
 
 /** Format an ISO 8601 author date relative to now (刚刚 / N 分钟前 / N 小时前 / 昨天 / date). */

src/client/mermaid-blocks.ts

@@ -0,0 +1,110 @@
+/**
+ * Markdown/mermaid fence detection for the markdown preview. The preview
+ * renders the WHOLE document through one DSH `MarkdownText` pass (so
+ * cross-fence semantics — reference-style links, footnotes, list
+ * continuity — stay intact) and the mermaid lazy chunk then swaps the
+ * rendered `language-mermaid` code blocks for diagrams. This module's pure
+ * splitter exists to detect whether the source contains a mermaid fence at
+ * all, so the mermaid chunk is only fetched when needed (unit-tested in
+ * tests/mermaid-blocks.spec.ts).
+ */
+
+/** One fenced mermaid diagram lifted out of the markdown source. */
+export interface MermaidBlock {
+  kind: 'mermaid'
+  /** The raw diagram source between the fences (info string stripped). */
+  code: string
+}
+
+/** A span of plain markdown source (may itself contain non-mermaid fences). */
+export interface MarkdownBlock {
+  kind: 'markdown'
+  text: string
+}
+
+export type MdBlock = MarkdownBlock | MermaidBlock
+
+/** Props of the chunk-resident `MermaidMarkdown` component (shared contract). */
+export interface MermaidMarkdownProps {
+  /** The full markdown source (rendered in a single MarkdownText pass). */
+  text: string
+  codeLabels: { copyLabel: string; copiedLabel: string }
+}
+
+/** CommonMark opening fence: 0-3 spaces indent + a run of 3+ backticks or tildes. */
+const OPEN_FENCE_RE = /^ {0,3}(`{3,}|~{3,})/
+
+/** A closing-fence line: 0-3 spaces indent + 3+ backticks/tildes + trailing spaces only. */
+const CLOSE_FENCE_RE = /^ {0,3}(`{3,}|~{3,})[ \t]*$/
+
+/** Parse the info string from the line tail after the fence run; null when invalid. */
+function fenceInfo(rest: string, fence: string): string | null {
+  const info = rest.trimStart().split(/\s+/)[0] ?? ''
+  // CommonMark: a backtick fence's info string may not contain backticks —
+  // such a line is not an opening fence at all.
+  if (fence.charAt(0) === '`' && info.includes('`')) return null
+  return info
+}
+
+/** True when the fence info string names mermaid (bare or `mermaid{...}`). */
+function isMermaidInfo(info: string): boolean {
+  const word = info.toLowerCase()
+  return word === 'mermaid' || word.startsWith('mermaid{')
+}
+
+/**
+ * Split markdown source into md/mermaid blocks for detection: only fences
+ * whose info string names mermaid are lifted; every other line stays in the
+ * markdown stream untouched. CommonMark fence rules are honored — opening
+ * fences of 3+ backticks OR tildes, and a closing fence must use the same
+ * character with at least as many characters as the opening fence. An
+ * unterminated mermaid fence swallows the rest of the file (the same
+ * recovery CommonMark applies to open fences).
+ */
+export function splitMermaidBlocks(text: string): MdBlock[] {
+  if (text === '') return []
+  const lines = text.split('\n')
+  const blocks: MdBlock[] = []
+  let markdown: string[] = []
+  let index = 0
+  const flushMarkdown = (): void => {
+    if (markdown.length === 0) return
+    blocks.push({ kind: 'markdown', text: markdown.join('\n') })
+    markdown = []
+  }
+  while (index < lines.length) {
+    const line = lines[index] ?? ''
+    const fenceMatch = OPEN_FENCE_RE.exec(line)
+    if (fenceMatch === null) {
+      markdown.push(line)
+      index += 1
+      continue
+    }
+    const fence = fenceMatch[1]!
+    // The line tail after the whole matched prefix (indent + fence run).
+    const rest = line.slice(fenceMatch.index + fenceMatch[0].length)
+    const info = fenceInfo(rest, fence)
+    if (info === null || !isMermaidInfo(info)) {
+      markdown.push(line)
+      index += 1
+      continue
+    }
+    flushMarkdown()
+    const char = fence.charAt(0)
+    const length = fence.length
+    const code: string[] = []
+    index += 1
+    while (index < lines.length) {
+      const candidate = lines[index] ?? ''
+      const close = CLOSE_FENCE_RE.exec(candidate)
+      if (close !== null && close[1]!.charAt(0) === char && close[1]!.length >= length) break
+      code.push(candidate)
+      index += 1
+    }
+    // Consume the closing fence (or run off the end on an open fence).
+    index += 1
+    blocks.push({ kind: 'mermaid', code: code.join('\n') })
+  }
+  flushMarkdown()
+  return blocks
+}

src/client/mermaid-sanitize.ts

@@ -0,0 +1,93 @@
+/**
+ * SVG sanitization for mermaid-rendered diagrams (markdown preview). The
+ * diagrams come from untrusted markdown sources, so the emitted SVG is
+ * re-sanitized before it reaches dangerouslySetInnerHTML — defense in depth
+ * on top of mermaid's own `securityLevel: 'strict'` (labels escaped, click
+ * directives inert) and `htmlLabels: false` (labels as real SVG <text>).
+ *
+ * What is stripped, and why:
+ * - `foreignObject`: the only channel that can carry raw HTML inside an
+ *   SVG document — with it gone, a hostile label cannot smuggle an
+ *   <img onerror> / <iframe> through the XML parse (any non-SVG element
+ *   outside foreignObject makes the XML parse fail and the whole diagram
+ *   is rejected).
+ * - `script` and foreign HTML elements (`img`/`iframe`/`object`/`embed`/
+ *   `video`/`audio`/`input`/`button`/`form`/`link`/`meta`/`base`): belt and
+ *   braces — real browsers reject these outside foreignObject at XML parse
+ *   time (→ '') while lenient parsers keep them, so they are stripped
+ *   explicitly instead of relying on the parser alone. Element names are
+ *   matched case-insensitively (XML preserves their case; the output is
+ *   re-parsed as HTML whose parser normalizes tag casing, so `<sCrIpT>` /
+ *   `<foreignobject>` would otherwise come back as script/foreignObject).
+ * - `@*` / `on*` attributes: event-handler channels (Vue-style directives
+ *   and native listeners), matched case-insensitively — the output is
+ *   re-parsed as HTML whose parser normalizes attribute casing, so
+ *   `oNload`/`OnClick` must not survive either.
+ * - ALL `href` / `xlink:href` attributes: the diagrams are static (no
+ *   bindFunctions, no click navigation), so links carry no value — and an
+ *   attacker-controlled URL (even an http(s) one) could otherwise navigate
+ *   the whole GUI away from the sidebar. Removing every href keeps the
+ *   surface deterministic.
+ *
+ * Parsing happens with `image/svg+xml`, so a malformed SVG fails the XML
+ * parse and the function returns '' (the caller surfaces the error
+ * fallback) instead of ever passing the raw string through; only a document
+ * whose root is an `<svg>` element is accepted.
+ */
+/** Element local names stripped case-insensitively (all lowercase). */
+const STRIP_ELEMENTS = new Set([
+  'foreignobject',
+  'script',
+  'img',
+  'iframe',
+  'object',
+  'embed',
+  'video',
+  'audio',
+  'input',
+  'button',
+  'form',
+  'link',
+  'meta',
+  'base',
+])
+
+/** A parse failure keeps nothing of the input: the caller shows the error. */
+export function sanitizeSvg(svg: string): string {
+  if (typeof DOMParser === 'undefined' || typeof XMLSerializer === 'undefined') return ''
+  let doc: Document
+  try {
+    doc = new DOMParser().parseFromString(svg, 'image/svg+xml')
+  } catch {
+    return ''
+  }
+  if (doc.querySelector('parsererror') !== null) return ''
+  if (doc.documentElement === null || doc.documentElement.localName !== 'svg') return ''
+  doc.querySelectorAll('*').forEach((node) => {
+    // XML element names preserve case; the string is later re-parsed as HTML
+    // whose parser normalizes tag casing — so mixed-case spellings of the
+    // strip list (e.g. `<sCrIpT>`, `<foreignobject>`) must be caught the
+    // same way as their canonical forms.
+    if (STRIP_ELEMENTS.has(node.localName.toLowerCase())) {
+      node.remove()
+      return
+    }
+    for (const attribute of [...node.attributes]) {
+      const name = attribute.name
+      // XML attribute names preserve case; the string is later re-parsed as
+      // HTML (dangerouslySetInnerHTML), whose parser normalizes attribute
+      // casing — so a mixed-case `oNload`/`HREF` must be caught the same way
+      // as its lowercase form. Compare on the lowercased name, remove with
+      // the original.
+      const normalized = name.toLowerCase()
+      if (normalized.startsWith('@') || normalized.startsWith('on')) {
+        node.removeAttribute(name)
+        continue
+      }
+      if (normalized === 'href' || normalized === 'xlink:href') {
+        node.removeAttribute(name)
+      }
+    }
+  })
+  return new XMLSerializer().serializeToString(doc.documentElement)
+}

src/client/mermaid.tsx

@@ -0,0 +1,401 @@
+/**
+ * Mermaid diagram renderer for the markdown preview, resident in the
+ * `mermaid` lazy chunk (src/client/chunks/mermaid.tsx): the mermaid library
+ * and its transitive graph deps (d3/dagre/cytoscape) are inlined into
+ * lib/client-mermaid.js and fetched only when a previewed markdown file
+ * actually contains a mermaid fence (see mermaid-blocks.ts).
+ *
+ * Rendering architecture: the whole document is rendered ONCE through the
+ * DSH `MarkdownText` (so cross-fence semantics — reference-style links,
+ * footnotes, ordered-list continuity — stay intact), then a layout effect
+ * swaps every rendered `language-mermaid` CodeBlock for a diagram. The
+ * swap keeps the React-managed `.md-code-block` host node in the tree and
+ * only replaces its children (display:contents suppresses the code-block
+ * chrome), so React reconciliation never loses the host; when a swapped
+ * block stops being a mermaid fence, the original children are restored.
+ *
+ * Security: mermaid.render → sanitized SVG injected into the block.
+ * `bindFunctions` is intentionally NOT applied (static diagrams; no
+ * flowchart click handlers), `securityLevel` stays 'strict' (labels are
+ * escaped, no raw-HTML foreignObject), `htmlLabels: false` keeps node text
+ * as real SVG <text>, and the emitted SVG is re-sanitized (see
+ * mermaid-sanitize.ts) before it reaches dangerouslySetInnerHTML. Clicking
+ * a rendered diagram opens a zoom/pan modal (borrowed interaction design
+ * from the mermaid PR #75, reimplemented on top of the sanitized SVG —
+ * the clone carries no event surface, so the modal adds no attack surface).
+ */
+import { useCallback, useEffect, useLayoutEffect, useRef, useState, type MouseEvent as ReactMouseEvent } from 'react'
+import { createPortal } from 'react-dom'
+import { createRoot, type Root } from 'react-dom/client'
+import mermaid from 'mermaid'
+import { IconCopyOutline16, MarkdownText, writeClipboard } from '@deepseek-ai/dsh-client-ui-primitives'
+import { isDarkScheme, subscribeColorScheme } from './theme.ts'
+import { t } from './locales.ts'
+import { sanitizeSvg } from './mermaid-sanitize.ts'
+import type { MermaidMarkdownProps } from './mermaid-blocks.ts'
+import css from './sidebar.module.css'
+
+/** Monotonic id seed: every render call gets a fresh, document-unique id. */
+let mermaidSeq = 0
+
+/** Configure mermaid for the current color scheme (idempotent). */
+function configureMermaid(): void {
+  mermaid.initialize({
+    startOnLoad: false,
+    securityLevel: 'strict',
+    // Labels as real SVG <text>: mermaid's default htmlLabels renders node
+    // text inside <foreignObject>, which the sanitizer strips wholesale —
+    // forcing pure SVG text keeps labels visible and the HTML label channel
+    // closed (strict already escapes label content).
+    htmlLabels: false,
+    theme: isDarkScheme() ? 'dark' : 'default',
+  })
+}
+
+/** First lines of a mermaid error (its dumps are huge; the head explains). */
+function summarizeError(error: unknown): string {
+  const message = error instanceof Error ? error.message : String(error)
+  return message.split('\n').slice(0, 6).join('\n')
+}
+
+/** The zoom/pan modal for one rendered diagram (click-to-enlarge). */
+function MermaidZoomModal({ svg, onClose }: { svg: SVGSVGElement; onClose: () => void }): React.ReactNode {
+  const overlayRef = useRef<HTMLDivElement>(null)
+  const stageRef = useRef<HTMLDivElement>(null)
+  const svgRef = useRef<SVGSVGElement | null>(null)
+  const dragRef = useRef({ active: false, startX: 0, startY: 0 })
+  const zoomRef = useRef({ scale: 1, tx: 0, ty: 0 })
+
+  const applyTransform = (): void => {
+    const node = svgRef.current
+    if (node === null) return
+    const { scale, tx, ty } = zoomRef.current
+    node.style.transform = `translate(${tx}px, ${ty}px) scale(${scale})`
+  }
+
+  /** Zoom by `delta` keeping the stage point (centerX/centerY) fixed. */
+  const zoom = useCallback((delta: number, centerX?: number, centerY?: number): void => {
+    const stage = stageRef.current
+    if (stage === null) return
+    const rect = stage.getBoundingClientRect()
+    const cx = centerX ?? rect.width / 2
+    const cy = centerY ?? rect.height / 2
+    const current = zoomRef.current
+    const newScale = Math.min(8, Math.max(0.2, current.scale * delta))
+    // The svg is flex-centered in the stage, so its center sits at
+    // (rect.width/2, rect.height/2). Solve for the translate that keeps the
+    // mouse point stationary in stage coordinates across the scale change.
+    const sx = rect.width / 2
+    const sy = rect.height / 2
+    const ratio = newScale / current.scale
+    current.tx = cx - sx - (cx - sx - current.tx) * ratio
+    current.ty = cy - sy - (cy - sy - current.ty) * ratio
+    current.scale = newScale
+    applyTransform()
+  }, [])
+
+  const reset = useCallback((): void => {
+    zoomRef.current = { scale: 1, tx: 0, ty: 0 }
+    applyTransform()
+  }, [])
+
+  const close = useCallback((): void => { onClose() }, [onClose])
+
+  // Mount the caller-provided (sanitized) svg clone imperatively: React
+  // types don't accept a raw DOM node as a child, and the modal owns the
+  // node's lifetime (removed on unmount; the preview copy is untouched).
+  useEffect(() => {
+    const stage = stageRef.current
+    if (stage === null) return
+    svgRef.current = svg
+    stage.appendChild(svg)
+    return () => {
+      svg.remove()
+      svgRef.current = null
+    }
+  }, [svg])
+
+  useEffect(() => {
+    const stage = stageRef.current
+    const node = svgRef.current
+    const overlay = overlayRef.current
+    if (stage === null || node === null || overlay === null) return
+
+    const onWheel = (event: WheelEvent): void => {
+      event.preventDefault()
+      const rect = stage.getBoundingClientRect()
+      zoom(event.deltaY < 0 ? 1.1 : 1 / 1.1, event.clientX - rect.left, event.clientY - rect.top)
+    }
+    const onKey = (event: KeyboardEvent): void => {
+      if (event.key === 'Escape') { close(); return }
+      if (event.key === '+' || event.key === '=') zoom(1.2)
+      else if (event.key === '-') zoom(1 / 1.2)
+      else if (event.key === '0') reset()
+    }
+    const onMouseDown = (event: MouseEvent): void => {
+      event.preventDefault()
+      dragRef.current = {
+        active: true,
+        startX: event.clientX - zoomRef.current.tx,
+        startY: event.clientY - zoomRef.current.ty,
+      }
+    }
+    const onMouseMove = (event: MouseEvent): void => {
+      if (!dragRef.current.active) return
+      zoomRef.current.tx = event.clientX - dragRef.current.startX
+      zoomRef.current.ty = event.clientY - dragRef.current.startY
+      applyTransform()
+    }
+    const onMouseUp = (): void => { dragRef.current.active = false }
+    const onOverlayClick = (event: MouseEvent): void => {
+      if (event.target === overlay) close()
+    }
+
+    // React's synthetic wheel is passive; a native listener is required to
+    // preventDefault (the page must not scroll while zooming the modal).
+    stage.addEventListener('wheel', onWheel, { passive: false })
+    node.addEventListener('mousedown', onMouseDown)
+    window.addEventListener('mousemove', onMouseMove)
+    window.addEventListener('mouseup', onMouseUp)
+    window.addEventListener('keydown', onKey)
+    overlay.addEventListener('click', onOverlayClick)
+    return () => {
+      stage.removeEventListener('wheel', onWheel)
+      node.removeEventListener('mousedown', onMouseDown)
+      window.removeEventListener('mousemove', onMouseMove)
+      window.removeEventListener('mouseup', onMouseUp)
+      window.removeEventListener('keydown', onKey)
+      overlay.removeEventListener('click', onOverlayClick)
+    }
+  }, [zoom, reset, close])
+
+  return createPortal(
+    <div className={css.mermaidModal} data-mermaid-modal ref={overlayRef}>
+      <div className={css.mermaidModalToolbar}>
+        <button
+          type="button"
+          className={css.mermaidModalButton}
+          title={t('mermaidZoomOut')}
+          onClick={() => zoom(1 / 1.2)}
+        >
+          −
+        </button>
+        <button
+          type="button"
+          className={css.mermaidModalButton}
+          title={t('mermaidZoomIn')}
+          onClick={() => zoom(1.2)}
+        >
+          +
+        </button>
+        <button
+          type="button"
+          className={css.mermaidModalButton}
+          title={t('mermaidZoomReset')}
+          onClick={reset}
+        >
+          ⟳
+        </button>
+        <button
+          type="button"
+          className={css.mermaidModalButton}
+          title={t('close')}
+          onClick={close}
+        >
+          ✕
+        </button>
+      </div>
+      <div className={css.mermaidModalStage} ref={stageRef} />
+      <div className={css.mermaidModalHint}>{t('mermaidZoomHint')}</div>
+    </div>,
+    document.body,
+  )
+}
+
+/** One rendered mermaid fence: header chrome + diagram (or error + source). */
+function MermaidDiagram({ code }: { code: string }): React.ReactNode {
+  const [svg, setSvg] = useState<string | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const [copied, setCopied] = useState(false)
+  /** Scheme state: a flip re-renders the diagram with the matching theme. */
+  const [dark, setDark] = useState(() => isDarkScheme())
+  /** The cloned svg shown in the zoom modal (null = closed). */
+  const [zoomSvg, setZoomSvg] = useState<SVGSVGElement | null>(null)
+  const copyTimer = useRef<number | undefined>(undefined)
+
+  useEffect(() => subscribeColorScheme(() => { setDark(isDarkScheme()) }), [])
+
+  useEffect(() => {
+    let cancelled = false
+    setSvg(null)
+    setError(null)
+    if (code.trim() === '') return () => { cancelled = true }
+    configureMermaid()
+    const id = `dsh-md-mermaid-${mermaidSeq += 1}`
+    mermaid.render(id, code)
+      .then(({ svg: rendered }) => {
+        if (cancelled) return
+        const clean = sanitizeSvg(rendered)
+        if (clean === '') {
+          // Parse/sanitize rejection: never pass the raw string through.
+          setError(t('mermaidError'))
+          return
+        }
+        setSvg(clean)
+      })
+      .catch((reason: unknown) => {
+        if (cancelled) return
+        setError(summarizeError(reason))
+      })
+    return () => { cancelled = true }
+  }, [code, dark])
+
+  const onCopy = useCallback(() => {
+    if (copied) return
+    writeClipboard(code).then((ok) => {
+      if (!ok) return
+      setCopied(true)
+      window.clearTimeout(copyTimer.current)
+      copyTimer.current = window.setTimeout(() => { setCopied(false) }, 1000)
+    })
+  }, [code, copied])
+
+  /** Clicking the diagram opens the zoom modal with a sanitized clone. */
+  const onBodyClick = (event: ReactMouseEvent<HTMLDivElement>): void => {
+    const svgEl = (event.target as Element).closest('svg')
+    if (svgEl === null) return
+    const clone = svgEl.cloneNode(true) as SVGSVGElement
+    // The modal owns sizing/transform; drop the preview's inline geometry.
+    clone.removeAttribute('style')
+    clone.removeAttribute('width')
+    clone.removeAttribute('height')
+    setZoomSvg(clone)
+  }
+
+  return (
+    <div className={css.mermaidWrap}>
+      <div className={css.mermaidHeader}>
+        <span className={css.mermaidInfo}>mermaid</span>
+        <button
+          type="button"
+          className={css.mermaidCopy}
+          onClick={onCopy}
+          aria-label={t('copy')}
+          title={t('copy')}
+        >
+          <IconCopyOutline16 />
+          <span>{copied ? t('copied') : t('copy')}</span>
+        </button>
+      </div>
+      {error !== null && <div className={css.mermaidError} title={error}>{t('mermaidError')}</div>}
+      {svg !== null && (
+        <div
+          className={css.mermaidBody}
+          data-mermaid-diagram
+          onClick={onBodyClick}
+          dangerouslySetInnerHTML={{ __html: svg }}
+        />
+      )}
+      {error !== null && <pre className={css.mermaidCode}><code>{code}</code></pre>}
+      {zoomSvg !== null && <MermaidZoomModal svg={zoomSvg} onClose={() => { setZoomSvg(null) }} />}
+    </div>
+  )
+}
+
+/** One swapped mount: the diagram root + the CodeBlock children it displaced. */
+interface MermaidMount {
+  root: Root
+  source: string
+  removed: ChildNode[]
+}
+
+/**
+ * True when a rendered CodeBlock is a mermaid fence. The DSH CodeBlock has
+ * two bodies: the shiki path carries the `language-*` class on generated
+ * <code> elements, while the plain path (which is always the one mermaid
+ * takes — no shiki grammar) only shows the language in the banner
+ * infostring (first element of the banner row; CSS-module classes are
+ * hashed, so that match is structural).
+ */
+function isMermaidBlock(block: HTMLElement): boolean {
+  const code = block.querySelector('code')
+  if (code !== null && [...code.classList].some(c => c.startsWith('language-mermaid'))) return true
+  const infostring = block.firstElementChild?.firstElementChild?.firstElementChild
+  return infostring !== null
+    && infostring !== undefined
+    && (infostring.textContent ?? '').trim() === 'mermaid'
+}
+
+/**
+ * The chunk-resident markdown preview renderer: ONE MarkdownText pass over
+ * the full source (cross-fence reference/footnote/list semantics intact),
+ * then every rendered `language-mermaid` code block is swapped for a
+ * `MermaidDiagram`. The `.md-code-block` host stays in the React tree —
+ * only its children are replaced — so reconciliation never loses the host;
+ * a block that stops being a mermaid fence gets its original children back.
+ * Only mounted when the source contains at least one mermaid fence (see
+ * TextEditor.tsx).
+ */
+export function MermaidMarkdown({ text, codeLabels }: MermaidMarkdownProps): React.ReactNode {
+  const containerRef = useRef<HTMLDivElement>(null)
+  const mountsRef = useRef(new Map<HTMLElement, MermaidMount>())
+
+  useLayoutEffect(() => {
+    const container = containerRef.current
+    if (container === null) return
+    const mounts = mountsRef.current
+    const seen = new Set<HTMLElement>()
+
+    for (const block of container.querySelectorAll<HTMLElement>('.md-code-block')) {
+      const mount = mounts.get(block)
+      const isMermaid = isMermaidBlock(block)
+      if (!isMermaid) {
+        // A previously swapped block that is no longer a mermaid fence:
+        // restore the CodeBlock children React still manages, so the plain
+        // fence renders normally again.
+        if (mount !== undefined) {
+          mount.root.unmount()
+          block.replaceChildren(...mount.removed)
+          block.removeAttribute('data-mermaid-processed')
+          mounts.delete(block)
+        }
+        continue
+      }
+      seen.add(block)
+      // The plain body always carries the fence source in <code>.
+      const source = block.querySelector('code')?.textContent ?? ''
+      if (mount !== undefined && mount.source === source) continue
+      if (mount === undefined) {
+        const host = document.createElement('div')
+        const removed = [...block.childNodes]
+        block.replaceChildren(host)
+        block.setAttribute('data-mermaid-processed', 'true')
+        const root = createRoot(host)
+        mounts.set(block, { root, source, removed })
+        root.render(<MermaidDiagram code={source} />)
+      } else {
+        mount.source = source
+        mount.root.render(<MermaidDiagram code={source} />)
+      }
+    }
+
+    // Drop mounts whose code block left the tree (fence removed, document
+    // restructured): the host node is gone with it.
+    for (const [block, mount] of mounts) {
+      if (seen.has(block)) continue
+      mount.root.unmount()
+      mounts.delete(block)
+    }
+  }, [text])
+
+  useEffect(() => () => {
+    for (const { root } of mountsRef.current.values()) root.unmount()
+    mountsRef.current.clear()
+  }, [])
+
+  return (
+    <div className={css.mermaidMarkdown} ref={containerRef}>
+      <MarkdownText text={text} codeLabels={codeLabels} />
+    </div>
+  )
+}

src/client/office-types.ts

@@ -1,48 +0,0 @@
-/**
- * Office file type dispatch — pure functions mapping file extensions to
- * preview kinds. Kept separate from the editor host so the mapping is
- * unit-testable without mounting React or pulling in docx-preview / Univer.
- *
- * The host side never inspects Office extensions: the binary NUL probe in
- * {@link ../index.ts} (readText) tags every Office file as binary, and the
- * /sidebar/file media route serves raw bytes for any extension. This module
- * is the client's sole source of truth for "is this previewable here".
- */
-
-/** Extensions rendered with docx-preview (preserved styles/images/tables). */
-export const OFFICE_DOCX_EXT = '.docx' as const
-
-/** Extensions rendered with Univer (sheets: data + formulas + formatting). */
-export const OFFICE_XLSX_EXT = '.xlsx' as const
-
-/** Extensions rendered with the browser-native PPTX viewer. */
-export const OFFICE_PPTX_EXT = '.pptx' as const
-
-/** Extensions that get a download-only affordance (no client-side renderer). */
-export const OFFICE_DOWNLOAD_ONLY_EXT = ['.doc', '.xls', '.ppt'] as readonly string[]
-
-/**
- * The preview strategy for one path's extension.
- * - `'docx'` — render via docx-preview.
- * - `'xlsx'` — render via Univer.
- * - `'pptx'` — render via pptx-renderer.
- * - `'download-only'` — show the binary download button (no preview renderer
- *   covers legacy OLE .doc/.xls/.ppt on the client).
- * - `null` — not an Office file; the caller's existing image / md / text / binary
- *   pipeline handles it.
- */
-export type OfficeKind = 'docx' | 'xlsx' | 'pptx' | 'download-only' | null
-
-/**
- * Map a lowercased extension (with leading dot) to its preview kind.
- *
- * @param ext - the path extension (with leading dot) (`.docx`,
- *   `.xlsx`, `.pptx`, `.doc`, `.xls`, `.ppt`, …); `''` when the path has none.
- */
-export function officeKindForExt(ext: string): OfficeKind {
-  if (ext === OFFICE_DOCX_EXT) return 'docx'
-  if (ext === OFFICE_XLSX_EXT) return 'xlsx'
-  if (ext === OFFICE_PPTX_EXT) return 'pptx'
-  if (OFFICE_DOWNLOAD_ONLY_EXT.includes(ext)) return 'download-only'
-  return null
-}

src/client/office-view.tsx

@@ -1,249 +0,0 @@
-/**
- * Office preview components: {@link DocxView} renders .docx via docx-preview
- * (preserved styles/images/tables), {@link XlsxView} renders .xlsx via the
- * Univer sheets preset (data + formulas + formatting). Both load the file
- * bytes through the existing /sidebar/file media route and own their library
- * lifecycle (dispose on unmount so canvases/workers don't leak — mirrors the
- * TerminalView dispose discipline).
- *
- * Errors degrade to the same download-button affordance the binary
- * placeholder uses, so a corrupted / encrypted / oversized file always
- * leaves the user with a way to get the file.
- *
- * Both libraries pull in several MB; tsdown's `codeSplitting: false` inlines
- * them into the single client bundle (the CJS __ModuleLoader__ wrapper's
- * `require` cannot load relative chunk URLs in the browser, so dynamic
- * import() collapses to a synchronous inline — see tsdown.config.ts).
- */
-import { useEffect, useRef, useState } from 'react'
-import { downloadUrl, mediaUrl, type SessionScope } from './api.ts'
-import { t } from './locales.ts'
-import { xlsxWorkbookToUniver } from './xlsx-to-univer.ts'
-import css from './sidebar.module.css'
-// Univer's stylesheets ride the same dsh-css-inline pipeline as xterm's CSS
-// (one <style data-plugin-css> tag, idempotent). Static import so the styles
-// are present before the first .xlsx opens.
-import '@univerjs/preset-sheets-core/lib/index.css'
-
-/** Loading / ready / error state shared by both views. */
-type LoadState =
-  | { status: 'loading' }
-  | { status: 'ready' }
-  | { status: 'error'; message: string }
-
-/** Shared props. */
-interface OfficeViewProps {
-  scope: SessionScope
-  path: string
-  title: string
-}
-
-/**
- * Render a .docx file via docx-preview. The library renders into a container
- * div (no canvas); images and styles are inlined. Unmounting clears the
- * container's innerHTML — docx-preview has no dispose API, but tearing down
- * the DOM is enough.
- */
-export function DocxView(props: OfficeViewProps): JSX.Element {
-  const { scope, path, title } = props
-  const viewportRef = useRef<HTMLDivElement>(null)
-  const wrapRef = useRef<HTMLDivElement>(null)
-  const [load, setLoad] = useState<LoadState>({ status: 'loading' })
-  const [zoom, setZoom] = useState(100)
-
-  useEffect(() => {
-    let cancelled = false
-    const container = viewportRef.current
-    const wrap = wrapRef.current
-    if (container === null || wrap === null) return
-    setZoom(100)
-    void (async () => {
-      try {
-        const response = await fetch(mediaUrl(scope, path))
-        if (cancelled) return
-        if (!response.ok) {
-          throw new Error(`HTTP ${response.status}`)
-        }
-        const buf = await response.arrayBuffer()
-        if (cancelled) return
-        // docx-preview ships its own CSS through the className option; the
-        // wrapper div scopes its render output.
-        const { renderAsync } = await import('docx-preview')
-        await renderAsync(buf, wrap, undefined, {
-          className: 'docx',
-          inWrapper: true,
-          ignoreWidth: false,
-          ignoreHeight: false,
-          breakPages: true,
-          experimental: false,
-        })
-        if (!cancelled) setLoad({ status: 'ready' })
-      } catch (error) {
-        if (!cancelled) {
-          setLoad({ status: 'error', message: error instanceof Error ? error.message : String(error) })
-        }
-      }
-    })()
-    return () => {
-      cancelled = true
-      // Tear down the rendered DOM so a reopen starts clean.
-      if (wrap !== null) wrap.innerHTML = ''
-    }
-  }, [scope.sessionId, scope.cwd, path])
-
-  useEffect(() => {
-    const viewport = viewportRef.current
-    if (viewport === null) return
-    const onWheel = (event: WheelEvent): void => {
-      if (!event.altKey) return
-      event.preventDefault()
-      const delta = event.deltaY < 0 ? 10 : -10
-      setZoom(current => Math.max(50, Math.min(200, current + delta)))
-    }
-    viewport.addEventListener('wheel', onWheel, { passive: false })
-    return () => { viewport.removeEventListener('wheel', onWheel) }
-  }, [])
-
-  return (
-    <div className={css.editorDocx}>
-      <div className={css.editorDocxViewport} ref={viewportRef}>
-        {load.status === 'loading' && <div className={css.editorPlaceholder}>{t('loading')}</div>}
-        {load.status === 'error' && <BinaryFallback scope={scope} path={path} message={load.message} />}
-        {load.status !== 'error' && (
-          <div
-            className={css.editorDocxWrap}
-            ref={wrapRef}
-            aria-label={title}
-            style={{ zoom: zoom / 100 }}
-          />
-        )}
-      </div>
-      <div className={css.editorDocxZoom}>
-        <span className={css.editorDocxZoomHint}>{t('zoomHint')}</span>
-        <input
-          className={css.editorDocxZoomRange}
-          type="range"
-          min={50}
-          max={200}
-          step={10}
-          value={zoom}
-          aria-label={t('zoom')}
-          onChange={(event) => { setZoom(Number(event.currentTarget.value)) }}
-        />
-        <span className={css.editorDocxZoomValue}>{zoom}%</span>
-      </div>
-    </div>
-  )
-}
-
-/**
- * Render a .xlsx file via Univer. The sheets preset creates a canvas-based
- * spreadsheet (formula bar, sheet tabs, formula engine) sized to its
- * container, so the host fills the pane. Unmounting calls `univer.dispose()`
- * — without it the canvas, workers, and DOM listeners leak (mirrors the
- * xterm dispose discipline in TerminalView).
- */
-export function XlsxView(props: OfficeViewProps): JSX.Element {
-  const { scope, path, title } = props
-  const hostRef = useRef<HTMLDivElement>(null)
-  const univerRef = useRef<{ dispose: () => void } | null>(null)
-  const [load, setLoad] = useState<LoadState>({ status: 'loading' })
-
-  useEffect(() => {
-    let cancelled = false
-    const host = hostRef.current
-    if (host === null) return
-    void (async () => {
-      try {
-        const response = await fetch(mediaUrl(scope, path))
-        if (cancelled) return
-        if (!response.ok) {
-          throw new Error(`HTTP ${response.status}`)
-        }
-        const buf = await response.arrayBuffer()
-        if (cancelled) return
-
-        // Dynamic imports — collapsed into the bundle by codeSplitting:false.
-        // The dynamic form keeps the source readable: each lib is only pulled
-        // in when an .xlsx is actually opened (semantically; the bundle still
-        // contains all of them).
-        const XLSX = await import('xlsx')
-        const { createUniver, LocaleType, mergeLocales } = await import('@univerjs/presets')
-        const { UniverSheetsCorePreset } = await import('@univerjs/preset-sheets-core')
-        // Locales pick the browser language; falls back to en-US.
-        const isZh = typeof navigator !== 'undefined' && navigator.language.toLowerCase().startsWith('zh')
-        const localePack = await (isZh
-          ? import('@univerjs/preset-sheets-core/locales/zh-CN').then(m => m.default).catch(() => null)
-          : import('@univerjs/preset-sheets-core/locales/en-US').then(m => m.default).catch(() => null))
-
-        const wb = XLSX.read(buf, { type: 'array' })
-        const locale = isZh ? LocaleType.ZH_CN : LocaleType.EN_US
-        const workbookData = xlsxWorkbookToUniver(wb, '0.25.1', locale)
-
-        if (cancelled) return
-        const { univer, univerAPI } = createUniver({
-          locale,
-          locales: localePack !== null ? { [locale]: mergeLocales(localePack) } : {},
-          presets: [UniverSheetsCorePreset({ container: host })],
-        })
-        univerRef.current = univer
-        univerAPI.createWorkbook(workbookData)
-        if (!cancelled) setLoad({ status: 'ready' })
-      } catch (error) {
-        if (!cancelled) {
-          try {
-            univerRef.current?.dispose()
-          } catch {
-            // Partially initialized instance — ignore disposal errors.
-          }
-          univerRef.current = null
-          host.innerHTML = ''
-          setLoad({ status: 'error', message: error instanceof Error ? error.message : String(error) })
-        }
-      }
-    })()
-    return () => {
-      cancelled = true
-      // Critical: dispose the Univer instance (canvas + workers + listeners).
-      try {
-        univerRef.current?.dispose()
-      } catch {
-        // Already torn down — ignore.
-      }
-      univerRef.current = null
-      // Clear the host in case dispose left DOM behind.
-      if (host !== null) host.innerHTML = ''
-    }
-  }, [scope.sessionId, scope.cwd, path])
-
-  return (
-    <div className={css.editorXlsx} aria-label={title}>
-      {/* Univer exclusively owns this element's descendants. React only owns
-          the sibling overlay, so Univer cannot remove a React child. */}
-      <div className={css.editorUniverHost} ref={hostRef} />
-      {load.status !== 'ready' && (
-        <div className={css.editorOfficeOverlay}>
-          {load.status === 'loading' && <div className={css.editorPlaceholder}>{t('loading')}</div>}
-          {load.status === 'error' && <BinaryFallback scope={scope} path={path} message={load.message} />}
-        </div>
-      )}
-    </div>
-  )
-}
-
-/**
- * The shared error / fallback affordance: the failure reason plus a download
- * link, so the user always has a path to the file. Used by both DocxView and
- * XlsxView, and matches the binary placeholder download link.
- */
-function BinaryFallback(props: { scope: SessionScope; path: string; message: string }): JSX.Element {
-  const { scope, path, message } = props
-  return (
-    <div className={css.editorBinary}>
-      <span className={css.editorBinaryNotice}>{message}</span>
-      <a className={css.editorDownloadLink} href={downloadUrl(scope, path)} download>
-        {t('downloadToView')}
-      </a>
-    </div>
-  )
-}

src/client/open-when-sized.ts

@@ -0,0 +1,43 @@
+/**
+ * Deferred one-shot open for hosts that may not have a real size yet.
+ *
+ * xterm's `Terminal.open()` must not run in a zero-size container: the
+ * renderer creation fails there (the DomRenderer is built from the host's
+ * dimensions), leaving the render service's renderer `undefined`, and the
+ * next Viewport refresh crashes reading `.dimensions` off it. WebKit-based
+ * hosts (WKWebView) reliably report zero while the bottom panel's expand
+ * slide is in flight; any `display:none`-hidden ancestor does the same.
+ *
+ * The caller's `open` callback (open + fit + resize) is invoked exactly
+ * once, on the first frame where the host reports a real size. While the
+ * host stays zero-sized the polling continues every frame; it stops when
+ * the host leaves the document (`isConnected`), so a pending open never
+ * fires after unmount. The returned cancel function drops a pending frame
+ * immediately (idempotent).
+ *
+ * `raf`/`caf` are injectable so tests can drive the polling deterministically.
+ */
+export function openWhenSized(
+  host: HTMLElement,
+  open: () => void,
+  raf: (cb: FrameRequestCallback) => number = requestAnimationFrame,
+  caf: (id: number) => void = cancelAnimationFrame,
+): () => void {
+  let frame: number | null = null
+  const step = (): void => {
+    frame = null
+    if (!host.isConnected) return
+    if (host.clientWidth > 0 && host.clientHeight > 0) {
+      open()
+      return
+    }
+    frame = raf(step)
+  }
+  frame = raf(step)
+  return () => {
+    if (frame !== null) {
+      caf(frame)
+      frame = null
+    }
+  }
+}

src/client/paths.ts

@@ -3,8 +3,27 @@
  * the session cwd (for the @-reference button and "copy relative path").
  * The fs-tree joins with '/' even on Windows, so both separators normalize
  * to '/' before comparison.
+ *
+ * This module is dependency-free (no node:path in the client bundle): the
+ * host is the authority for path semantics, so this mirror deliberately
+ * accepts a SUPERSET of absolute forms — anything a Windows host would emit
+ * (drive letters, UNC) plus POSIX roots. A form the host would reject
+ * (e.g. a backslash UNC path on a POSIX host) passes through here and then
+ * fails loudly in the host's requireAbsolute instead of being silently
+ * joined onto the cwd.
  */
 
+/**
+ * Mirror of the host's absolute-path notion (see fs-tree.requireAbsolute):
+ * POSIX roots, Windows drive letters, and Windows UNC network shares in
+ * both backslash (`\\server\share\...`) and forward-slash
+ * (`//server/share/...`) form. Deliberately a superset — see the module
+ * comment — so a produced UNC path is never joined onto the cwd.
+ */
+export function isAbsolutePath(path: string): boolean {
+  return path.startsWith('/') || /^[A-Za-z]:[\\/]/.test(path) || /^[\\/]{2}[^\\/]/.test(path)
+}
+
 /**
  * The path relative to the session's working directory.
  * @param cwd - the explorer root (absolute).

src/client/plugins-shared.ts

@@ -0,0 +1,29 @@
+/**
+ * Shared vocabulary of the recommended plugin catalogs: the entry shape and
+ * the GitHub topic URL. The two catalogs live in sibling modules —
+ * `plugins-tabs.ts` (tab registrations) and `plugins-viewers.ts` (file
+ * previewer registrations) — and are shown in the two "add plugin" modals
+ * (Side card settings → the dashed cards at the end of the 侧边栏内容 /
+ * 文件预览 grids).
+ */
+
+/** The GitHub topic page listing every repo tagged `dsh-better-sidebar`. */
+export const PLUGIN_TOPIC_URL = 'https://github.com/topics/dsh-better-sidebar'
+
+/** One curated plugin entry (name / url / description / install script). */
+export interface PluginEntry {
+  /** Unique id (the npm package name). */
+  id: string
+  /** Short display name. */
+  name: string
+  /** GitHub repository URL. */
+  url: string
+  /** One-line description (i18n friendly: string or () => string). */
+  description: string | (() => string)
+  /** Optional catalog group heading (i18n friendly); entries without one
+   *  render under the plain list (a flat catalog stays flat). */
+  category?: string | (() => string)
+  /** The full shell command pre-filled into the install terminal (not
+   *  executed until the user presses Enter). */
+  install: string
+}

src/client/plugins-tabs.ts

@@ -0,0 +1,87 @@
+/**
+ * The built-in catalog of TAB-registration plugins (sidebar pages),
+ * shown in the "add tab plugin" modal (Side card settings → 侧边栏内容 grid
+ * → the dashed card). Adding an entry: append one object here (unique
+ * `id` = npm package name, `url` = GitHub repo, `description` =
+ * i18n-friendly (add a `pluginXxxDesc` key in locales.ts), `install` = the
+ * full one-line install script — it starts with `cd ~/.dsh` so the install
+ * runs with the DSH home as the working directory). Data integrity is
+ * guarded by `tests/plugin-list.spec.ts`.
+ */
+import { t } from './locales.ts'
+import type { PluginEntry } from './plugins-shared.ts'
+
+/** Tab-registration plugins (alphabetical order). */
+export const builtinTabPlugins: readonly PluginEntry[] = [
+  {
+    id: '@dsh-external/dsh-sentinel',
+    name: 'dsh-sentinel 唤醒系统',
+    url: 'https://github.com/fuhefei/dsh-sentinel',
+    description: () => t('pluginSentinelDesc'),
+    // The official one-line bundle-channel install (git source, build
+    // artifacts committed — no build step needed). The `github:…` form is
+    // the upstream's documented command, `cd ~/.dsh` keeps the profile
+    // context consistent with the other entries.
+    install: 'cd ~/.dsh && dsh plugin --profile web add "github:fuhefei/dsh-sentinel#v0.7.0"',
+  },
+  {
+    id: 'dsh-docs-panel',
+    name: 'dsh-docs-panel 全局文档',
+    url: 'https://github.com/mlosun/dsh-docs-panel',
+    description: () => t('pluginDocsPanelDesc'),
+    // dsh-docs-panel hard-depends on dsh-better-sidebar (required peer), so
+    // the install line installs the prerequisite first, then the plugin.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add dsh-docs-panel',
+  },
+  {
+    id: 'dsh-flowglass',
+    name: 'dsh-flowglass 流镜',
+    url: 'https://github.com/Iwctwbh/dsh-flowglass',
+    description: () => t('pluginFlowglassDesc'),
+    // Flowglass keeps its standalone drawer as a fallback and registers the
+    // native tab automatically when better-sidebar is present.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add dsh-flowglass',
+  },
+  {
+    id: 'dsh-git-forge',
+    name: 'dsh-git-forge Git 凭据',
+    url: 'https://github.com/thirsty5034/dsh-git-forge',
+    description: () => t('pluginGitForgeDesc'),
+    // Peer-depends on dsh-better-sidebar (Git Forge tab). Install the
+    // prerequisite first; package is GitHub-sourced until npm publish.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add "dsh-git-forge@github:thirsty5034/dsh-git-forge"',
+  },
+  {
+    id: 'dsh-git-remotes',
+    name: 'dsh-git-remotes Git 远程',
+    url: 'https://github.com/yq04/dsh-git-remotes',
+    description: () => t('pluginGitRemotesDesc'),
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add git+https://github.com/yq04/dsh-git-remotes.git',
+  },
+  {
+    id: 'dsh-sidebar-qa',
+    name: 'dsh-sidebar-qa 划选追问',
+    url: 'https://github.com/ChenRuoT/dsh-sidebar-qa',
+    description: () => t('pluginSidebarQaDesc'),
+    // dsh-sidebar-qa hard-depends on dsh-better-sidebar (required peer), so
+    // the install line installs the prerequisite first, then the plugin.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add git+https://github.com/ChenRuoT/dsh-sidebar-qa.git',
+  },
+  {
+    id: 'dsh-ssh-tunnel',
+    name: 'dsh-ssh-tunnel SSH 隧道',
+    url: 'https://github.com/thirsty5034/dsh-ssh-tunnel',
+    description: () => t('pluginSshTunnelDesc'),
+    // Peer-depends on dsh-better-sidebar (SSH Tunnel tab + center terminal/SFTP).
+    // Install the prerequisite first; package is GitHub-sourced until npm publish.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add "dsh-ssh-tunnel@github:thirsty5034/dsh-ssh-tunnel"',
+  },
+  {
+    id: 'dsh-turn-review',
+    name: 'dsh-turn-review 本轮审查',
+    url: 'https://github.com/yq04/dsh-turn-review',
+    description: () => t('pluginTurnReviewDesc'),
+    // Needs dsh-better-sidebar (optional peer) for the tab; no model tools.
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-better-sidebar && dsh plugin --profile web add git+https://github.com/yq04/dsh-turn-review.git',
+  },
+]

src/client/plugins-viewers.ts

@@ -0,0 +1,30 @@
+/**
+ * The built-in catalog of FILE-PREVIEWER plugins (file-type previewers),
+ * shown in the "add preview plugin" modal (Side card settings → 文件预览
+ * grid → the dashed card). Adding an entry: append one object here (unique
+ * `id` = npm package name, `url` = GitHub repo, `description` =
+ * i18n-friendly, `install` = the full shell command pre-filled into the
+ * install terminal — it starts with `cd ~/.dsh` so the install runs with
+ * the DSH home as the working directory). Data integrity is guarded by
+ * `tests/plugin-list.spec.ts`.
+ */
+import { t } from './locales.ts'
+import type { PluginEntry } from './plugins-shared.ts'
+
+/** File-previewer plugins (alphabetical order). */
+export const builtinViewerPlugins: readonly PluginEntry[] = [
+  {
+    id: '@huanlin/dsh-plugin-better-sidebar-plugin-office',
+    name: 'Office 预览插件',
+    url: 'https://github.com/HuanLinOTO/dsh-plugin-better-sidebar-plugin-office',
+    description: () => t('pluginOfficeDesc'),
+    install: 'cd ~/.dsh && dsh plugin --profile web add @huanlin/dsh-plugin-better-sidebar-plugin-office',
+  },
+  {
+    id: 'dsh-video-preview',
+    name: '视频预览插件',
+    url: 'https://github.com/zemul/dsh-video-preview',
+    description: () => t('pluginVideoPreviewDesc'),
+    install: 'cd ~/.dsh && dsh plugin --profile web add dsh-video-preview',
+  },
+]

src/client/prefs.ts

@@ -10,13 +10,25 @@
  */
 import type { api } from './api.ts'
 import {
+  clampTerminalFontSize,
+  clampTitleBarStrip,
   clampWidthPercent,
   SIDEBAR_PREFS_DEFAULTS,
+  TITLE_BAR_SCHEMES,
+  TITLE_BAR_STRIP_DEFAULT,
   type SidebarPrefs,
+  type TitleBarScheme,
 } from '../prefs-shared.ts'
 
-export { SIDEBAR_PREFS_DEFAULTS, clampWidthPercent }
-export type { SidebarPrefs }
+export {
+  SIDEBAR_PREFS_DEFAULTS,
+  TITLE_BAR_SCHEMES,
+  TITLE_BAR_STRIP_DEFAULT,
+  clampTerminalFontSize,
+  clampTitleBarStrip,
+  clampWidthPercent,
+}
+export type { SidebarPrefs, TitleBarScheme }
 
 /** The settings wire face the preferences need (a subset of the plugin api). */
 export type SidebarSettingsClient = Pick<typeof api, 'settingsGet' | 'settingsUpdate'>
@@ -40,15 +52,55 @@ export function parsePrefs(value: unknown): SidebarPrefs {
     autoOpenSubagent: typeof record.autoOpenSubagent === 'boolean'
       ? record.autoOpenSubagent
       : SIDEBAR_PREFS_DEFAULTS.autoOpenSubagent,
+    autoOpenJobs: typeof record.autoOpenJobs === 'boolean'
+      ? record.autoOpenJobs
+      : SIDEBAR_PREFS_DEFAULTS.autoOpenJobs,
     agentTerminalTools: typeof record.agentTerminalTools === 'boolean'
       ? record.agentTerminalTools
       : SIDEBAR_PREFS_DEFAULTS.agentTerminalTools,
     bottomPanelAutoTerminal: typeof record.bottomPanelAutoTerminal === 'boolean'
       ? record.bottomPanelAutoTerminal
       : SIDEBAR_PREFS_DEFAULTS.bottomPanelAutoTerminal,
+    terminalFontFamily: typeof record.terminalFontFamily === 'string'
+      ? record.terminalFontFamily
+      : SIDEBAR_PREFS_DEFAULTS.terminalFontFamily,
+    terminalShell: typeof record.terminalShell === 'string'
+      ? record.terminalShell
+      : SIDEBAR_PREFS_DEFAULTS.terminalShell,
+    terminalShellArgs: typeof record.terminalShellArgs === 'string'
+      ? record.terminalShellArgs
+      : SIDEBAR_PREFS_DEFAULTS.terminalShellArgs,
+    terminalFontSize: typeof record.terminalFontSize === 'number' && Number.isFinite(record.terminalFontSize)
+      ? clampTerminalFontSize(record.terminalFontSize)
+      : SIDEBAR_PREFS_DEFAULTS.terminalFontSize,
     interceptOpenPath: typeof record.interceptOpenPath === 'boolean'
       ? record.interceptOpenPath
       : SIDEBAR_PREFS_DEFAULTS.interceptOpenPath,
+    editorExplorer: typeof record.editorExplorer === 'boolean'
+      ? record.editorExplorer
+      : SIDEBAR_PREFS_DEFAULTS.editorExplorer,
+    // The title-bar scheme (auto | web | preset | custom). The schema
+    // declares the field WITHOUT a default, so documents written by older
+    // plugin versions resolve without it — migrate from the legacy fields:
+    // a document that ALREADY HAS VALUES (the manual compat flag on, or a
+    // non-default strip px — both only reachable through the old gear
+    // popup) maps to the `custom` scheme so the user's numbers keep
+    // working; a pristine document keeps the conservative `auto` scheme.
+    titleBarScheme: isTitleBarScheme(record.titleBarScheme)
+      ? record.titleBarScheme
+      : (record.titleBarCompat === true || hasLegacyStripValue(record.titleBarStripPx) ? 'custom' : 'auto'),
+    titleBarPresetId: typeof record.titleBarPresetId === 'string'
+      ? record.titleBarPresetId
+      : SIDEBAR_PREFS_DEFAULTS.titleBarPresetId,
+    customCss: typeof record.customCss === 'string'
+      ? record.customCss
+      : SIDEBAR_PREFS_DEFAULTS.customCss,
+    titleBarCompat: typeof record.titleBarCompat === 'boolean'
+      ? record.titleBarCompat
+      : SIDEBAR_PREFS_DEFAULTS.titleBarCompat,
+    titleBarStripPx: typeof record.titleBarStripPx === 'number' && Number.isFinite(record.titleBarStripPx)
+      ? clampTitleBarStrip(record.titleBarStripPx)
+      : SIDEBAR_PREFS_DEFAULTS.titleBarStripPx,
     htmlViewerNoSandbox: typeof record.htmlViewerNoSandbox === 'boolean'
       ? record.htmlViewerNoSandbox
       : SIDEBAR_PREFS_DEFAULTS.htmlViewerNoSandbox,
@@ -61,11 +113,35 @@ export function parsePrefs(value: unknown): SidebarPrefs {
     browserInterceptLinks: typeof record.browserInterceptLinks === 'boolean'
       ? record.browserInterceptLinks
       : SIDEBAR_PREFS_DEFAULTS.browserInterceptLinks,
+    browserInterceptHttp: typeof record.browserInterceptHttp === 'boolean'
+      ? record.browserInterceptHttp
+      : SIDEBAR_PREFS_DEFAULTS.browserInterceptHttp,
+    browserInterceptHttps: typeof record.browserInterceptHttps === 'boolean'
+      ? record.browserInterceptHttps
+      : SIDEBAR_PREFS_DEFAULTS.browserInterceptHttps,
     tabsEnabled: booleanMapOf(record.tabsEnabled),
     viewersEnabled: booleanMapOf(record.viewersEnabled),
+    pluginSettings: pluginSettingsMapOf(record.pluginSettings),
   }
 }
 
+/**
+ * Validate the plugin-owned settings map (v0.12.0+): `{ descriptorId: { key:
+ * value } }`, nested open maps. Any non-object value (or a malformed whole)
+ * falls back to the empty map — the schema defaults already guard the wire
+ * shape, this is the client's second line.
+ */
+function pluginSettingsMapOf(value: unknown): Record<string, Record<string, unknown>> {
+  if (value === null || typeof value !== 'object' || Array.isArray(value)) return {}
+  const out: Record<string, Record<string, unknown>> = {}
+  for (const [id, blob] of Object.entries(value as Record<string, unknown>)) {
+    if (blob !== null && typeof blob === 'object' && !Array.isArray(blob)) {
+      out[id] = blob as Record<string, unknown>
+    }
+  }
+  return out
+}
+
 /**
  * Validate one enable-switch map (per-tab / per-viewer). Only boolean values
  * survive; a non-object or a non-boolean entry falls back to the empty map /
@@ -80,6 +156,21 @@ function booleanMapOf(value: unknown): Record<string, boolean> {
   return out
 }
 
+/** Type guard for the title-bar scheme union (anything else falls back). */
+function isTitleBarScheme(value: unknown): value is TitleBarScheme {
+  return typeof value === 'string' && (TITLE_BAR_SCHEMES as readonly string[]).includes(value)
+}
+
+/**
+ * Whether the legacy document carries an explicit strip value (only
+ * reachable through the old gear popup): a stored number different from the
+ * default counts as "the user already configured something" and migrates to
+ * the `custom` scheme.
+ */
+function hasLegacyStripValue(value: unknown): boolean {
+  return typeof value === 'number' && Number.isFinite(value) && value !== TITLE_BAR_STRIP_DEFAULT
+}
+
 /**
  * Read the resolved side card preferences through the plugin's settings route.
  * @param settings - the settings wire face (the plugin api by default).
@@ -95,3 +186,22 @@ export async function loadPrefs(settings: SidebarSettingsClient): Promise<Sideba
     return { ...SIDEBAR_PREFS_DEFAULTS }
   }
 }
+
+/**
+ * Read the external-disable flag from the same settings route: the
+ * dsh-web-ui family's aionui-panel provider choice. True only when the host
+ * resolved `aionui-panel.rightPanel` to 'aionui-panel' — while true the
+ * sidebar must not mount (the two right panels are mutually exclusive). Any
+ * failure (route rejected, aionui absent, malformed response) reads false,
+ * so a missing family never hides the sidebar.
+ * @param settings - the settings wire face (the plugin api by default).
+ * @returns the external-disable flag (false on any failure).
+ */
+export async function loadExternalDisable(settings: SidebarSettingsClient): Promise<boolean> {
+  try {
+    const view = await settings.settingsGet()
+    return view.externalDisable === true
+  } catch {
+    return false
+  }
+}

src/client/produced-files.ts

@@ -6,6 +6,7 @@
  * Kept dependency-free so the takeover logic is unit-testable and the
  * replica is easy to diff against upstream when it drifts.
  */
+import { isAbsolutePath } from './paths.ts'
 
 /** Paths a tool-result view reports as produced, by render intent. */
 export function producedPaths(view: unknown): readonly string[] {
@@ -76,10 +77,13 @@ export function selectProducedFiles(owner: unknown): readonly string[] | null {
   return paths.length === 0 ? null : paths
 }
 
-/** Resolve a (possibly relative) path against the session cwd for the sidebar. */
+/**
+ * Resolve a (possibly relative) path against the session cwd for the sidebar.
+ * Absolute detection mirrors the host (see client/paths.isAbsolutePath):
+ * POSIX roots, drive letters and UNC shares must not be joined onto the cwd.
+ */
 export function resolveSidebarPath(cwd: string | undefined, path: string): string {
-  const absolute = path.startsWith('/') || /^[A-Za-z]:[\\/]/.test(path)
-  if (absolute) return path
+  if (isAbsolutePath(path)) return path
   const base = cwd ?? ''
   if (base === '') return path
   const separator = base.includes('\\') ? '\\' : '/'

src/client/selection-payload.ts

@@ -0,0 +1,86 @@
+/**
+ * Pure payload builders for the "add selection to conversation" popup in the
+ * text viewers (markdown preview + the catch-all code viewer). Everything
+ * here is string math — no React, no ctx — so the unit tests cover it
+ * directly.
+ *
+ * Insert shape (agreed with the product owner):
+ * - Selection ≤ SELECTION_LIMIT characters: a fenced code block whose info
+ *   line is `相对路径:起止行` and whose body is the selected text.
+ * - Selection over the limit: a single plain-text line `相对路径:起止行`
+ *   (no fence, no content).
+ * - The path is relative to the session cwd (the same projection the
+ *   explorer's @ button uses); an unknown cwd falls back to the absolute
+ *   path.
+ * - Line numbers: single-line selections write `path:12`, multi-line write
+ *   `path:12-15`. The markdown preview cannot map rendered DOM back to
+ *   source lines directly, so it reverse-searches the selected text in the
+ *   source and only reports lines on an unambiguous hit (see
+ *   {@link linesOfSelection}).
+ */
+import { relativeTo } from './paths.ts'
+
+/** Max inserted selection length (UTF-16 code units, i.e. JS `.length`). */
+export const SELECTION_LIMIT = 500
+
+/** The source line span a selection maps to (1-based, inclusive). */
+export interface SelectionLines {
+  start: number
+  end: number
+}
+
+/**
+ * The fence info line: `rel[:start[-end]]` — lines are omitted entirely
+ * when unknown (the preview reverse-search missed).
+ */
+export function headerOf(path: string, cwd: string | undefined, lines?: SelectionLines): string {
+  const rel = cwd !== undefined ? relativeTo(cwd, path) : path
+  if (lines === undefined) return rel
+  if (lines.end > lines.start) return `${rel}:${lines.start}-${lines.end}`
+  return `${rel}:${lines.start}`
+}
+
+/**
+ * The full text appended to the composer draft for one selection.
+ * Over the limit the content is dropped: the plain path line is the whole
+ * payload (an empty fenced block would just occupy the draft).
+ */
+export function buildSelectionInsert(
+  path: string,
+  cwd: string | undefined,
+  lines: SelectionLines | undefined,
+  selected: string,
+): string {
+  const header = headerOf(path, cwd, lines)
+  if (selected.length > SELECTION_LIMIT) return header
+  return `\`\`\`${header}\n${selected}\n\`\`\``
+}
+
+/** 1-based line number of a character index in a text. */
+function lineAt(source: string, index: number): number {
+  let line = 1
+  for (let i = 0; i < index && i < source.length; i++) {
+    if (source[i] === '\n') line++
+  }
+  return line
+}
+
+/**
+ * Reverse-map a rendered-DOM selection back to source line numbers. The
+ * preview selection is plain text (block boundaries come out as `\n`), so
+ * this is a best-effort substring search: a single trailing newline is
+ * stripped first (DOM block selections tend to carry one), and only an
+ * EXACTLY-ONE occurrence yields lines — an ambiguous or missing match
+ * returns null (the header then carries the path without line numbers).
+ */
+export function linesOfSelection(source: string, selected: string): SelectionLines | null {
+  const text = selected.endsWith('\n') ? selected.slice(0, -1) : selected
+  if (text === '') return null
+  const at = source.indexOf(text)
+  if (at === -1) return null
+  if (source.indexOf(text, at + 1) !== -1) return null
+  return {
+    start: lineAt(source, at),
+    end: lineAt(source, at + Math.max(text.length - 1, 0)),
+  }
+}

src/client/service.ts

@@ -22,14 +22,58 @@
 import type { ReactNode } from 'react'
 import type { Context } from '../context-types.ts'
 import {
-  activateTab, allLeaves, closeTab as closeTabReducer, openTabInActivePane, patchTab,
-  type SidebarState, type SidebarStore, type SidebarTab,
+  activateTab as activateTabReducer, allLeaves, closeTab as closeTabReducer, leafWithTab,
+  openTabInActivePane, patchTab, tabOpenIn, togglePanel, treeOf,
+  type SidebarSnapshot, type SidebarState, type SidebarStore, type SidebarTab,
 } from './state.ts'
+import { isNarrowWidth } from './breakpoints.ts'
 import type { SessionScope } from './api.ts'
+import type { SidebarPrefs } from '../prefs-shared.ts'
 
-/** One declarative boolean setting of a tab/viewer, rendered as a nested
- *  switch row in the Side card settings page (e.g. the Subagent page's
- *  "auto-open when a subagent appears"). */
+/**
+ * Public state vocabulary re-exported for consumers (type-only; the values
+ * stay internal). External plugins name these types in their descriptors —
+ * e.g. `dedupeKey: (tab: SidebarTab) => tab.id`, `createTab: (state: SidebarState) => …`,
+ * or `badge: (…, state: SidebarState) => …`.
+ */
+export type {
+  SidebarTab,
+  SidebarState,
+  SidebarStore,
+  SidebarSnapshot,
+  SidebarDiffRef,
+  TabType,
+} from './state.ts'
+export type { SessionScope } from './api.ts'
+export type { SidebarPrefs } from '../prefs-shared.ts'
+
+/** The row control a declarative setting renders as in the settings popup. */
+export type SidebarSettingToggleType = 'switch' | 'text' | 'number' | 'select'
+
+/** One option of a `type: 'select'` setting row. */
+export interface SidebarSettingSelectOption {
+  /** The value written to the setting key when this option is picked
+   *  (JSON-serializable: string / number / boolean). */
+  value: string | number | boolean
+  /** Option title (i18n friendly: string or () => string). */
+  title: string | (() => string)
+  /** Option description (i18n friendly); rendered under the title in the
+   *  icon dropdown. */
+  desc?: string | (() => string)
+  /** Option icon: when ANY option declares one, the dropdown renders
+   *  big-icon option cards and the closed control shows the selected
+   *  option's icon too; without icons both are a single line of text. */
+  icon?: ReactNode | ((size: number) => ReactNode)
+}
+
+/** One declarative setting of a tab/viewer, rendered as a nested row in the
+ *  Side card settings page (e.g. the Subagent page's "auto-open when a
+ *  subagent appears" switch, or the terminal's custom font rows). `type`
+ *  selects the control: 'switch' (default) renders the custom switch,
+ *  'text' a free-form input committed on blur/Enter, 'number' a numeric
+ *  input clamped to `min`/`max`, 'select' a dropdown over the declared
+ *  `options` (single-pick writes the option's value; `multi: true` writes
+ *  the array of picked values and defaults to false). */
 export interface SidebarSettingToggle {
   /** The SidebarPrefs field this toggle reads and writes ('autoOpenSubagent'). */
   key: string
@@ -37,17 +81,61 @@ export interface SidebarSettingToggle {
   title: string | (() => string)
   /** Row description (i18n friendly). */
   desc?: string | (() => string)
+  /** Row control type; defaults to 'switch' (backward compatible). */
+  type?: SidebarSettingToggleType
+  /** Lower bound for `type: 'number'` rows (clamped on commit). */
+  min?: number
+  /** Upper bound for `type: 'number'` rows (clamped on commit). */
+  max?: number
+  /** Input placeholder for `type: 'text'` rows. */
+  placeholder?: string
+  /** Unit suffix rendered after the input (e.g. 'px' for a size row). */
+  unit?: string
+  /** Options of a `type: 'select'` row. */
+  options?: readonly SidebarSettingSelectOption[]
+  /** Whether a `type: 'select'` row allows picking several options (the
+   *  stored value is then an array of option values); defaults to false. */
+  multi?: boolean
+}
+
+/** Props of a descriptor's custom settings panel (`settings.render`). */
+export interface SidebarSettingsRenderProps {
+  store: SidebarStore
+  service: BetterSidebarService
+  prefs: SidebarPrefs
+  /** This descriptor's own persisted settings blob (from `pluginSettings[id]`). */
+  pluginSettings: Record<string, unknown>
+  /** Persist one plugin-owned setting of this descriptor. */
+  updatePluginSetting(key: string, value: unknown): void
+  /** Close the settings popup. */
+  close(): void
 }
 
 /** Declarative settings of one registered tab or file viewer. */
 export interface SidebarSettingsDeclaration {
   /**
-   * Extra boolean toggles rendered under the feature's own row in the
+   * Extra settings rows rendered under the feature's own row in the
    * settings page (only while the feature is enabled). Keys must be fields
    * of the host's PrefsSchema (built-ins: 'autoOpenSubagent',
-   * 'agentTerminalTools'); unknown keys are dropped by the settings seam.
+   * 'agentTerminalTools', 'terminalFontFamily'); unknown keys are dropped
+   * by the settings seam.
    */
   toggles?: readonly SidebarSettingToggle[]
+  /**
+   * Plugin-owned settings rows (v0.12.0+): same row controls as `toggles`
+   * (switch/text/number), but the keys are plugin-local and persisted in
+   * the sidebar's own prefs document under `pluginSettings[<descriptor id>]`
+   * — no host PrefsSchema field needed. Values must be JSON-serializable
+   * (the row controls produce strings / numbers / booleans).
+   */
+  pluginToggles?: readonly SidebarSettingToggle[]
+  /**
+   * Custom settings panel (v0.12.0+): when given, the gear popup renders
+   * this instead of the row lists (`toggles` / `pluginToggles`). Receives
+   * the shared store/service, the live prefs, the descriptor's own
+   * `pluginSettings` blob, and a persistence helper.
+   */
+  render?: (props: SidebarSettingsRenderProps) => ReactNode
 }
 
 /** Props every tab component receives (builtins and external alike). */
@@ -104,6 +192,22 @@ export interface TabDescriptor {
    * When omitted, a default `{ id, type, title }` tab is created.
    */
   createTab?: (state: SidebarState) => { tab: SidebarTab; patch?: Partial<SidebarState> } | null
+  /**
+   * External-link target claim (v0.13.0+): when a GUI external-link click
+   * is taken over (the `browserInterceptLinks` master AND the URL's
+   * protocol flag — `browserInterceptHttp` / `browserInterceptHttps` —
+   * are on), the first registered tab whose `urlTarget(url)` returns true
+   * is opened with `openTab({ type, url, title: hostname })` — the URL is
+   * the whole payload (the tab reads it from `tab.path`). Registration
+   * order wins (first claim first served); a disabled tab type is skipped;
+   * a throwing predicate is swallowed (console.error, the type is skipped).
+   * The built-in browser tab declares NO urlTarget — it stays the implicit
+   * fallback target, so plugins can never be shadowed by it. To host more
+   * than one URL at a time, mint per-URL ids through `createTab` (the
+   * browser builtin's pattern); otherwise the id safety net focuses the
+   * existing tab of the same type and the new URL is not applied.
+   */
+  urlTarget?: (url: URL) => boolean
   /**
    * Declarative settings shown in the Side card settings page: every
    * registered tab gets an enable/disable switch (icon + title + id), and
@@ -111,6 +215,27 @@ export interface TabDescriptor {
    * (e.g. the subagent tab's 'autoOpenSubagent').
    */
   settings?: SidebarSettingsDeclaration
+  /**
+   * Tab-strip badge (v0.12.0+): a small pill rendered on the tab next to
+   * the icon — a number renders as a count (99+ capped), a string renders
+   * as-is, null/undefined hides the badge. Called on every tab-bar render,
+   * so keep it cheap; a throw is swallowed (no badge shown).
+   */
+  badge?: (ctx: Context, scope: SessionScope, state: SidebarState) => string | number | null | undefined
+  /**
+   * Lifecycle callbacks (v0.12.0+). Fired by the SERVICE paths only:
+   * `onOpen` when an open actually creates a tab (a dedupe/id-safety-net
+   * focus is NOT an open — it fires `onActivate` instead), `onActivate`
+   * when a tab is focused (dedupe focus, id-safety-net focus, or the
+   * tab-bar activation), `onClose` when a tab is closed through
+   * `closeTab`. Builtin-only flows that mutate state directly (the diff
+   * split placement, agent-terminal reconcile) never touch external tabs
+   * and fire no callbacks. A throwing callback is logged and never breaks
+   * the open/close/activate flow.
+   */
+  onOpen?: (tab: SidebarTab, scope: SessionScope) => void
+  onActivate?: (tab: SidebarTab, scope: SessionScope) => void
+  onClose?: (tab: SidebarTab, scope: SessionScope) => void
   component: (props: TabComponentProps) => ReactNode
 }
 
@@ -138,6 +263,33 @@ export interface FileViewerProps {
   mediaUrl?: string
   /** custom load() return value (fetchStrategy='custom'). */
   customData?: unknown
+  /** Internal (built-in text editor): 'host' asks the viewer to skip its own
+   *  toolbar row — the editor host's merged-mode header renders it instead,
+   *  fed through the two callbacks below. Viewers that ignore these fields
+   *  render exactly as before. */
+  toolbar?: 'self' | 'host'
+  /** Internal: the viewer reports its toolbar state (mode/dirty/save). */
+  onToolbarState?: (state: EditorToolbarState) => void
+  /** Internal: the viewer registers its toolbar commands on mount (null on
+   *  unmount). */
+  onToolbarControls?: (controls: EditorToolbarControls | null) => void
+}
+
+/** The toolbar state a text editor reports to the host's merged-mode header. */
+export interface EditorToolbarState {
+  /** Whether the preview/edit mode toggle applies (markdown/html). */
+  modes: boolean
+  mode: 'preview' | 'edit'
+  dirty: boolean
+  /** Whether saving applies (text content loaded). */
+  editable: boolean
+  saveState: 'idle' | 'saving' | 'saved' | 'failed'
+}
+
+/** The commands the host's merged-mode header sends back to the viewer. */
+export interface EditorToolbarControls {
+  setMode(mode: 'preview' | 'edit'): void
+  save(): void
 }
 
 /** Describes one file previewer (builtins register themselves too). */
@@ -158,8 +310,9 @@ export interface FileViewerDescriptor {
    * is consulted before its `exts` (per-descriptor, in priority order).
    */
   detect?: (path: string, head: Uint8Array) => boolean
-  /** fetchStrategy='custom' loader. */
-  load?: (path: string, scope: SessionScope) => Promise<unknown>
+  /** fetchStrategy='custom' loader. `signal` (v0.12.0+) aborts on viewer
+   *  teardown / re-match; loaders that ignore it keep working. */
+  load?: (path: string, scope: SessionScope, signal?: AbortSignal) => Promise<unknown>
   /**
    * Declarative settings shown in the Side card settings page: every
    * registered viewer gets an enable/disable switch (icon + title + exts).
@@ -168,7 +321,26 @@ export interface FileViewerDescriptor {
   component: (props: FileViewerProps) => ReactNode
 }
 
-/** The registry service published as `ctx.betterSidebar`. */
+/** One `openTab` request. */
+export interface OpenTabSeed {
+  type: string
+  /** Overrides the descriptor's title when given (the editor tab shows the file name). */
+  title?: string
+  /** A file path (the editor tab's content seed). */
+  path?: string
+  /** A diff reference (the diff tab's content seed). */
+  diff?: SidebarTab['diff']
+  /** Explicit tab id (defaults to the type). */
+  id?: string
+  /** A URL the tab navigates to on mount (the browser tab's seed). */
+  url?: string
+  /** JSON-serializable custom state carried on the minted tab (persisted across reloads; v0.12.0+). */
+  meta?: unknown
+}
+
+/**
+ * The registry service published as `ctx.betterSidebar`.
+ */
 export interface BetterSidebarService {
   registerTab(descriptor: TabDescriptor): () => void
   registerFileViewer(descriptor: FileViewerDescriptor): () => void
@@ -198,12 +370,59 @@ export interface BetterSidebarService {
    * pre-set to the URL (the browser tab's navigation seed; the caller
    * usually pairs it with a hostname `title`). A disabled tab type is a
    * no-op.
+   *
+   * `scope` (v0.12.0+) targets a specific session: when given, the open
+   * lands in THAT session's sidebar state (loading it if it has none yet)
+   * without switching the UI's active session; when absent the open lands
+   * in the currently active session (the pre-0.12 behavior).
+   *
+   * A CONTENT open (a `path` or `url` seed) must land in sight: when the
+   * panel hosting the landing pane is collapsed, it is expanded
+   * automatically (the right panel by default, the bottom panel when the
+   * active pane lives there; on narrow viewports the merged drawer opens).
+   * Type-only opens (the + menu, agent-terminal auto-tabs) never expand —
+   * the panel behavior is their caller's business.
+   *
+   * Note: `available` gates the + menu's disabled state only — it does NOT
+   * refuse `openTab` (only the settings disable switch does).
    */
-  openTab(seed: { type: string; title?: string; path?: string; diff?: SidebarTab['diff']; id?: string; url?: string }): void
-  /** Close a tab by id. */
-  closeTab(tabId: string): void
+  openTab(seed: OpenTabSeed, scope?: SessionScope): void
+  /**
+   * Close a tab by id (fires descriptor.onClose). An unknown tab id is a
+   * strict no-op (no state churn, no callbacks). `scope` (v0.12.0+) rides
+   * to the callback (its optional cwd included); absent, the callback gets
+   * `{ sessionId }` of the active session.
+   */
+  closeTab(tabId: string, scope?: SessionScope): void
   /** Subscribe to registry changes (register/dispose). */
   subscribe(listener: () => void): () => void
+  /** The plugin version this service instance was built from ('0.12.0'). */
+  readonly version: string
+  /**
+   * Monotonic capability list (v0.12.0+): 'badge' | 'tabLifecycle' |
+   * 'updateTab' | 'openFile' | 'targetedOpen' | 'stateSubscription' |
+   * 'tabMeta' | 'pluginSettings'. Features are never removed — consumers
+   * gate new API usage on membership.
+   */
+  readonly features: readonly string[]
+  /**
+   * The current sidebar snapshot: the active session id, its state (panel
+   * geometry, open tabs, expansions), and the side card prefs (v0.12.0+).
+   * `state`/`sessionId` are undefined until a session becomes active.
+   */
+  getSnapshot(): SidebarSnapshot
+  /** Subscribe to snapshot changes (session switch, state changes, prefs changes). Returns the disposer. */
+  subscribeState(listener: () => void): () => void
+  /** Update an open tab's display fields (title / path / meta); a missing tab id is a no-op. */
+  updateTab(tabId: string, patch: { title?: string; path?: string; meta?: unknown }): void
+  /**
+   * Activate an open tab (the tab-bar activation path; fires
+   * descriptor.onActivate). An unknown tab id is a strict no-op. `scope`
+   * (v0.12.0+) rides to the callback like `closeTab`'s.
+   */
+  activateTab(tabId: string, scope?: SessionScope): void
+  /** Open a file in the sidebar editor of `scope`'s session (title defaults to the file name). */
+  openFile(scope: SessionScope, path: string, title?: string): void
 }
 
 /** Extract the lowercase extension without leading dot from a path. */
@@ -214,6 +433,81 @@ function extOfPath(path: string): string {
   return base.includes('/') || base.includes('\\') ? '' : base
 }
 
+/** The file name of a path (both separators). */
+function baseNameOf(path: string): string {
+  const at = Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\'))
+  return at === -1 ? path : path.slice(at + 1)
+}
+
+/**
+ * Find the tab type that claims an intercepted external-link URL (v0.13.0+).
+ * Walks the descriptors in REGISTRATION order and returns the first one
+ * that declares `urlTarget` and matches `url`; a throwing predicate is
+ * swallowed (console.error, type skipped) so one broken plugin can never
+ * break the whole link pipeline. The caller passes the ENABLED tab
+ * descriptors (enablement is the caller's prefs domain — filter
+ * `service.getTabs()` through `tabsEnabled` before matching) and falls
+ * back to the built-in browser tab when nothing claims the URL (the
+ * browser never declares `urlTarget` itself, so it can never shadow a
+ * plugin claim).
+ */
+export function matchUrlTarget(tabs: readonly TabDescriptor[], url: URL): TabDescriptor | undefined {
+  for (const tab of tabs) {
+    if (tab.urlTarget === undefined) continue
+    let claimed = false
+    try {
+      claimed = tab.urlTarget(url) === true
+    } catch (error) {
+      console.error('[dsh-better-sidebar] urlTarget error:', error)
+      continue
+    }
+    if (claimed) return tab
+  }
+  return undefined
+}
+
+/**
+ * The plugin version this service instance reports. Keep in lockstep with
+ * `package.json`'s version — `tests/service.spec.ts` asserts the pair.
+ */
+export const SIDEBAR_SERVICE_VERSION = '0.15.1'
+
+/**
+ * Monotonic capability list consumers use to gate new API usage (features
+ * are never removed). Each string names a v0.12.0+ capability:
+ * - 'badge': TabDescriptor.badge
+ * - 'tabLifecycle': TabDescriptor.onOpen/onActivate/onClose
+ * - 'updateTab': BetterSidebarService.updateTab
+ * - 'openFile': BetterSidebarService.openFile
+ * - 'targetedOpen': BetterSidebarService.openTab(seed, scope?)
+ * - 'stateSubscription': getSnapshot/subscribeState
+ * - 'tabMeta': SidebarTab.meta (seeds, createTab, updateTab, persistence)
+ * - 'pluginSettings': SidebarSettingsDeclaration.pluginToggles/render
+ * - 'urlTarget' (v0.13.0): TabDescriptor.urlTarget (external-link claims)
+ * - 'settingSelect': SidebarSettingToggle type 'select' (options/multi)
+ */
+export const SIDEBAR_FEATURES = [
+  'badge',
+  'tabLifecycle',
+  'updateTab',
+  'openFile',
+  'targetedOpen',
+  'stateSubscription',
+  'tabMeta',
+  'pluginSettings',
+  'urlTarget',
+  'settingSelect',
+] as const
+
+/** Run one plugin callback; a throw is logged and never breaks the caller. */
+function safeCall(fn: () => void): void {
+  try {
+    fn()
+  } catch (error) {
+    console.error('[dsh-better-sidebar] plugin callback error:', error)
+  }
+}
+
 /**
  * Create one BetterSidebar service bound to a store. The service owns the
  * tab/viewer registries (Map + listener set) and proxies openTab/closeTab
@@ -300,7 +594,7 @@ export function createBetterSidebarService(store: SidebarStore): BetterSidebarSe
     return undefined
   }
 
-  const openTab = (seed: { type: string; title?: string; path?: string; diff?: SidebarTab['diff']; id?: string; url?: string }): void => {
+  const openTab = (seed: OpenTabSeed, scope?: SessionScope): void => {
     // A type the user disabled in settings never opens — neither from the
     // + menu nor from derived flows (file opens, subagent auto-open,
     // external plugins). Already-open tabs keep rendering.
@@ -308,9 +602,23 @@ export function createBetterSidebarService(store: SidebarStore): BetterSidebarSe
       console.warn(`[dsh-better-sidebar] tab type "${seed.type}" is disabled in the side card settings`)
       return
     }
-    store.reduce((state) => {
-      const descriptor = tabs.get(seed.type)
-      if (descriptor === undefined) return state
+    const descriptor = tabs.get(seed.type)
+    if (descriptor === undefined) return
+    // A scope targets another session: the open lands in THAT session's
+    // state (loaded on demand) without switching the UI's active session.
+    const targetSessionId = scope?.sessionId ?? store.getSnapshot().sessionId
+    if (targetSessionId === undefined) return
+    const callbackScope: SessionScope = scope ?? { sessionId: targetSessionId }
+    // Whether this open targets a session that is NOT the one on screen: a
+    // targeted open must not auto-expand panels the user cannot see (the
+    // expansion is about landing "in sight" for the CURRENT viewer).
+    const activeSessionId = store.getSnapshot().sessionId
+    const targetsInactiveSession = scope !== undefined && scope.sessionId !== activeSessionId
+    // Lifecycle capture: `created` when the open minted a NEW tab (a
+    // dedupe/id-safety-net focus is an ACTIVATION, not an open).
+    let created: SidebarTab | undefined
+    let activated: SidebarTab | undefined
+    const reducer = (state: SidebarState): SidebarState => {
       // Let the descriptor mint the tab (terminal's nextTerminal bump, etc.).
       let tab: SidebarTab
       let next: SidebarState
@@ -329,28 +637,153 @@ export function createBetterSidebarService(store: SidebarStore): BetterSidebarSe
           title: seed.title ?? (typeof descriptor.title === 'function' ? descriptor.title() : descriptor.title),
           ...(seed.path !== undefined ? { path: seed.path } : {}),
           ...(seed.diff !== undefined ? { diff: seed.diff } : {}),
+          ...(seed.meta !== undefined ? { meta: seed.meta } : {}),
         }
         next = applyDedupe(state, tab, descriptor)
       }
-      // A URL seed pre-fills the tab's path (the browser tab navigates to it
-      // on mount). An explicit seed.title also wins over a createTab-minted
-      // default title (e.g. the sidebar-browser's hostname title).
-      if (seed.url !== undefined) {
-        return patchTab(next, tab.id, {
+      // Classify the landing against the INPUT state FIRST: a FOCUS fires
+      // onActivate with the tab that is active NOW; a real creation fires
+      // onOpen with the minted tab. Both the dedupeKey match AND the id
+      // match count as a focus — a descriptor deduping by key (e.g. editor
+      // by path) can focus an existing tab for a NEW requested id, and
+      // classifying that as a creation would fire onOpen with a phantom
+      // tab that never closes.
+      const dedupeKey = descriptor.dedupeKey ?? (descriptor.single === true ? () => descriptor.id : undefined)
+      const key = dedupeKey?.(tab)
+      const inputTabs = allLeaves(state.splits).concat(allLeaves(state.bottomSplits)).flatMap(leaf => leaf.tabs)
+      const existedByKey = key !== undefined
+        && inputTabs.some(candidate => candidate.type === tab.type && dedupeKey!(candidate) === key)
+      const existedById = tabOpenIn(state, tab.id)
+      const isCreation = !existedByKey && !existedById
+      // A URL seed pre-fills a NEWLY CREATED tab's path (the browser tab
+      // navigates to it on mount); a FOCUS must never have its path
+      // overwritten. An explicit seed.title still wins over a createTab-
+      // minted default title (e.g. the sidebar-browser's hostname title).
+      let landed: SidebarState = next
+      if (seed.url !== undefined && isCreation) {
+        landed = patchTab(next, tab.id, {
           path: seed.url,
           ...(seed.title !== undefined ? { title: seed.title } : {}),
         })
       }
-      return next
-    })
+      // Lifecycle capture (before the auto-expand block, which early-returns).
+      if (isCreation) {
+        // Resolve the ACTUAL landed tab — the url patch mints a new object,
+        // so the callback must see the tab that was really inserted.
+        const landedTabs = allLeaves(landed.splits).concat(allLeaves(landed.bottomSplits)).flatMap(leaf => leaf.tabs)
+        created = landedTabs.find(candidate => candidate.id === tab.id) ?? tab
+      } else {
+        // A focus happened: resolve the tab that is actually active now and
+        // report THAT to onActivate (never the caller's un-inserted seed).
+        const candidates = allLeaves(landed.splits).concat(allLeaves(landed.bottomSplits)).flatMap(leaf => leaf.tabs)
+        activated = key !== undefined
+          ? candidates.find(candidate => candidate.type === tab.type && dedupeKey!(candidate) === key)
+          : candidates.find(candidate => candidate.id === tab.id)
+        activated ??= tab
+      }
+      // A CONTENT open (file / browser) must land in sight: when the panel
+      // hosting the landing pane is collapsed, expand it. On narrow
+      // viewports the two workbenches merge into one drawer, so the drawer
+      // (panelOpen) is the only lever; on wide viewports the landing pane's
+      // own panel opens — the bottom panel when the active pane lives in the
+      // bottom tree, else the right panel. Type-only opens (+ menu,
+      // agent-terminal auto-tabs) never expand (the panel behavior is their
+      // caller's business). The check runs on the post-dedupe state, so a
+      // content open that merely FOCUSES an existing tab expands the panel
+      // too — the open must never land out of sight. Opens targeted at an
+      // INACTIVE session never expand (nothing is in sight for the user).
+      if (
+        !targetsInactiveSession
+        && typeof window !== 'undefined'
+        && (seed.path !== undefined || seed.url !== undefined)
+      ) {
+        if (isNarrowWidth(window.innerWidth)) {
+          if (!landed.panelOpen) return togglePanel(landed)
+        } else {
+          const hostKey = treeOf(landed, landed.activePane ?? '')
+          if (hostKey === 'bottomSplits') {
+            if (!landed.bottomOpen) return { ...landed, bottomOpen: true }
+          } else if (!landed.panelOpen) {
+            return togglePanel(landed)
+          }
+        }
+      }
+      return landed
+    }
+    // A scope targeting ANOTHER session lands the open there without
+    // switching the UI; a scope naming the active session (or no scope)
+    // takes the regular reduce path so the UI notifies and re-renders.
+    if (targetsInactiveSession) {
+      store.reduceFor(scope.sessionId, reducer)
+    } else {
+      store.reduce(reducer)
+    }
+    if (created !== undefined) safeCall(() => descriptor.onOpen?.(created!, callbackScope))
+    else if (activated !== undefined) safeCall(() => descriptor.onActivate?.(activated!, callbackScope))
   }
 
-  const closeTab = (tabId: string): void => {
+  const closeTab = (tabId: string, scope?: SessionScope): void => {
+    let closed: SidebarTab | undefined
     store.reduce((state) => {
+      // Unknown tab ids are a strict no-op: no state churn, no notify, no
+      // pointless localStorage rewrite (mirrors updateTab's short-circuit).
+      if (!tabOpenIn(state, tabId)) return state
       const paneId = findPaneIdOf(state, tabId)
-      if (paneId === '') return state
+      const leaf = leafWithTab(state[treeOf(state, paneId)], tabId)
+      closed = leaf?.tabs.find(tab => tab.id === tabId)
       return closeTabReducer(state, paneId, tabId)
     })
+    if (closed !== undefined) {
+      const sessionId = scope?.sessionId ?? store.getSnapshot().sessionId
+      if (sessionId !== undefined) {
+        const descriptor = tabs.get(closed.type)
+        // An explicit scope (with its optional cwd) rides to the callback.
+        safeCall(() => descriptor?.onClose?.(closed!, scope ?? { sessionId }))
+      }
+    }
+  }
+
+  /** The snapshot the store publishes (state/prefs carry the active session). */
+  const getSnapshot = (): SidebarSnapshot => store.getSnapshot()
+
+  /** Store changes: session switch, state mutations, prefs writes. */
+  const subscribeState = (listener: () => void): (() => void) => store.subscribe(listener)
+
+  /** Patch an open tab's display fields (a missing tab id is a no-op). */
+  const updateTab = (tabId: string, patch: { title?: string; path?: string; meta?: unknown }): void => {
+    store.reduce((state) => patchTab(state, tabId, {
+      ...(patch.title !== undefined ? { title: patch.title } : {}),
+      ...(patch.path !== undefined ? { path: patch.path } : {}),
+      ...(patch.meta !== undefined ? { meta: patch.meta } : {}),
+    }))
+  }
+
+  /** Activate an open tab (the tab-bar activation path; fires onActivate). */
+  const activateTab = (tabId: string, scope?: SessionScope): void => {
+    let activated: SidebarTab | undefined
+    store.reduce((state) => {
+      // Unknown tab ids are a strict no-op (no state churn / notify).
+      if (!tabOpenIn(state, tabId)) return state
+      const paneId = findPaneIdOf(state, tabId)
+      const leaf = leafWithTab(state[treeOf(state, paneId)], tabId)
+      activated = leaf?.tabs.find(tab => tab.id === tabId)
+      return activateTabReducer(state, paneId, tabId)
+    })
+    if (activated !== undefined) {
+      const sessionId = scope?.sessionId ?? store.getSnapshot().sessionId
+      if (sessionId !== undefined) {
+        const descriptor = tabs.get(activated.type)
+        // An explicit scope (with its optional cwd) rides to the callback.
+        safeCall(() => descriptor?.onActivate?.(activated!, scope ?? { sessionId }))
+      }
+    }
+  }
+
+  /** Open a file in the sidebar editor of `scope`'s session (title defaults
+   *  to the file name; the tab id is path-derived, like the internal
+   *  open-path interception, so distinct files open side by side). */
+  const openFile = (scope: SessionScope, path: string, title?: string): void => {
+    openTab({ type: 'editor', title: title ?? baseNameOf(path), path, id: `editor:${path}` }, scope)
   }
 
   return {
@@ -365,6 +798,13 @@ export function createBetterSidebarService(store: SidebarStore): BetterSidebarSe
     openTab,
     closeTab,
     subscribe,
+    version: SIDEBAR_SERVICE_VERSION,
+    features: SIDEBAR_FEATURES,
+    getSnapshot,
+    subscribeState,
+    updateTab,
+    activateTab,
+    openFile,
   }
 }
 
@@ -383,7 +823,7 @@ function applyDedupe(state: SidebarState, tab: SidebarTab, descriptor: TabDescri
     // bottom panel focuses an existing instance wherever it lives.
     for (const leaf of allLeaves(state.splits).concat(allLeaves(state.bottomSplits))) {
       const existing = leaf.tabs.find(t => t.type === tab.type && dedupeKey!(t) === key)
-      if (existing !== undefined) return activateTab(state, leaf.id, existing.id)
+      if (existing !== undefined) return activateTabReducer(state, leaf.id, existing.id)
     }
   }
   return openTabInActivePane(state, tab)

src/client/settings-nav-icon.ts

@@ -0,0 +1,45 @@
+/**
+ * Mark this plugin's row in the DSH settings navigation so its bundled CSS
+ * can replace the shell's fallback gear with the Side card glyph.
+ *
+ * DSH 0.1.x projects only `id`, `order`, and `label` from a
+ * `settings.section` registration, then chooses icons inside the settings
+ * shell from a closed list of built-in ids. Until that public contract grows
+ * an icon field, the plugin identifies only its own localized row after the
+ * dialog mounts. The marker owns no shell structure and is removed on fiber
+ * disposal, so the adaptation remains HMR-safe.
+ */
+
+export const SETTINGS_NAV_MARKER = 'data-dsh-better-sidebar-settings-nav'
+
+/**
+ * Keep the marker on the settings-nav button whose visible text is this
+ * plugin's current localized section label.
+ * @param label - locale-aware label resolver used by the section registration.
+ * @returns disposer that disconnects observation and removes owned markers.
+ */
+export function registerSettingsNavIcon(label: () => string): () => void {
+  let disposed = false
+
+  const sync = (): void => {
+    if (disposed) return
+    const currentLabel = label().trim()
+    const buttons = document.querySelectorAll<HTMLButtonElement>('[role="dialog"] nav button')
+    for (const button of buttons) {
+      const matches = currentLabel.length > 0 && button.textContent?.trim() === currentLabel
+      if (matches) button.setAttribute(SETTINGS_NAV_MARKER, '')
+      else button.removeAttribute(SETTINGS_NAV_MARKER)
+    }
+  }
+
+  sync()
+  const observer = new MutationObserver(sync)
+  observer.observe(document.body, { childList: true, subtree: true, characterData: true })
+
+  return () => {
+    disposed = true
+    observer.disconnect()
+    document.querySelectorAll(`[${SETTINGS_NAV_MARKER}]`)
+      .forEach(element => { element.removeAttribute(SETTINGS_NAV_MARKER) })
+  }
+}

src/client/shell-presets.ts

@@ -0,0 +1,83 @@
+/**
+ * Built-in desktop-shell presets for the "位置兼容模式" secondary setting
+ * (scheme `preset`). DATA-DRIVEN by design: each shell's adaptation lives
+ * in one entry (strip values / optional CSS), the core applies it through
+ * the SAME generic strip variable and CSS-injection mechanism — adding a
+ * shell is adding data, never a code path.
+ *
+ * Inclusion rule (maintained in AGENTS.md §8): only shells that (a) appear
+ * in this repo's issues/PRs (a user actually hit a problem) and (b) have
+ * 100+ GitHub stars (a real user base). The mechanism is opt-in: auto
+ * detection never applies a preset — the settings badge only SUGGESTS it.
+ */
+import type { DesktopEnv } from './desktop-env.ts'
+
+export interface ShellPreset {
+  /** Stable preset id (persisted in `titleBarPresetId`). */
+  readonly id: string
+  /** User-facing name of the shell. */
+  readonly title: string
+  /** One-line description shown in the settings popup. */
+  readonly desc: string
+  /**
+   * The top strip (px) this shell reserves over web content, per
+   * environment — the fallback used when neither the standard WCO API nor
+   * the `dsh-desktop-titlebar-inset` contract parameter is available.
+   * Return undefined when the shell needs no strip in that environment.
+   * MUST be pure (called during render).
+   */
+  readonly stripFor?: (env: DesktopEnv) => number | undefined
+  /**
+   * Extra CSS applied while the preset is enabled (injected last, after the
+   * plugin's own styles). Targets the plugin's stable data attributes and
+   * shell-declared body/URL markers only — never other shells' class names.
+   * Empty for presets fully covered by the strip variable.
+   */
+  readonly css?: string
+  /**
+   * Whether this shell's marker is currently visible (URL stamps / preload
+   * markers — see desktop-env.ts). Used ONLY for the settings "已检测"
+   * badge; never auto-applies anything. MUST be pure.
+   */
+  readonly detect?: (env: DesktopEnv) => boolean
+}
+
+/**
+ * DeepSeek Harness Desktop (anywhere-labs, Electron, 16k+ stars — the most
+ * reported shell in this repo's issues/PRs). Advanced mode: macOS reserves
+ * a 20px caption row (traffic lights top-left), win32 draws the native
+ * window controls in a ~32px overlay (WCO reports the real height when
+ * available, which the auto scheme already consumes; the 32 is the
+ * no-WCO fallback). Compatibility mode keeps the native frame — nothing.
+ */
+const DSH_DESKTOP: ShellPreset = {
+  id: 'dsh-desktop',
+  title: 'DeepSeek Harness Desktop',
+  desc: 'Electron 高级模式（无边框）：macOS 顶栏 20px、Windows 无 WCO 时 32px 标题栏让位',
+  stripFor: (env) => {
+    if (env.mode !== 'advanced') return undefined
+    if (env.platform === 'darwin') return 20
+    if (env.platform === 'win32') return 32
+    return undefined
+  },
+  detect: (env) => env.mode === 'advanced',
+}
+
+const PRESETS: readonly ShellPreset[] = [
+  DSH_DESKTOP,
+]
+
+/** All built-in shell presets (registration order = settings list order). */
+export function getShellPresets(): readonly ShellPreset[] {
+  return PRESETS
+}
+
+/** One preset by id, or undefined for an unknown/empty id. */
+export function getShellPreset(id: string): ShellPreset | undefined {
+  return PRESETS.find(preset => preset.id === id)
+}
+
+/** The strip the active preset contributes for the given environment. */
+export function presetStripFor(preset: ShellPreset | undefined, env: DesktopEnv): number | undefined {
+  return preset?.stripFor?.(env)
+}

src/client/sidechat-transcript.ts

@@ -0,0 +1,321 @@
+/**
+ * Side Chat transcript mapping (browser half): turns a thread child's
+ * history rows (`session.history` — the generic RPC, which reads the durable
+ * log without activating the child) into compact display rows.
+ *
+ * A thread child's log starts with the ENTIRE inherited parent log as its
+ * fork seed. The mapping therefore cuts everything up to the LAST
+ * `session/end-seed` marker and maps context injections (the "Side
+ * conversation boundary" prompt, plugin-sourced context) onto a collapsible
+ * injection row, so the view shows only the thread's own conversation.
+ *
+ * Live streaming: `assistant/message` events only land when a step
+ * completes, but `assistant/chunk` events stream token-level text and
+ * reasoning deltas. The mapping accumulates both per block and supersedes
+ * them with the assembled message once it lands (settled rows).
+ */
+import type { SidebarHistoryEntry } from '../context-types.ts'
+import { isContextInjectionMessage, SIDE_BOUNDARY_PROMPT } from '../sidechat-core.ts'
+
+/** One compact transcript row rendered in the thread view. `seq` is the
+ *  source event's log sequence — stable row identity for React keys across
+ *  polls (streaming caches ride the key, so window slides must not re-key
+ *  rows). */
+export type SidechatTranscriptRow =
+  | { kind: 'user'; seq: number; text: string }
+  /** A context injection (the side boundary prompt + the parked in-progress
+   *  snapshot, or any plugin-sourced context): rendered as one collapsible
+   *  row, never as a user bubble. */
+  | { kind: 'injection'; seq: number; text: string }
+  /** `settled` distinguishes an assembled message from a still-streaming
+   *  chunk accumulation (streaming rows are superseded by the settle). */
+  | { kind: 'assistant'; seq: number; text: string; settled: boolean }
+  | { kind: 'reasoning'; seq: number; text: string; settled: boolean }
+  | {
+    kind: 'tool'
+    seq: number
+    name: string
+    failed: boolean
+    /** Raw arguments JSON as the model produced it. */
+    args?: string
+    /** Plain text of the paired result. */
+    resultText?: string
+    /** True while the call's result has not landed yet. */
+    executing?: boolean
+  }
+
+/** Extract the visible text of a content-block list (`text` blocks verbatim,
+ *  joined by blank lines); empty reads `…` so rows never render blank. */
+export function blockText(content: readonly unknown[]): string {
+  const parts: string[] = []
+  for (const block of content) {
+    if (block === null || typeof block !== 'object') continue
+    const candidate = block as { type?: unknown; text?: unknown }
+    if (candidate.type === 'text' && typeof candidate.text === 'string') {
+      parts.push(candidate.text)
+    }
+  }
+  const text = parts.join('\n\n')
+  return text === '' ? '…' : text
+}
+
+/** Cap for a tool row's one-line argument summary (display only). */
+const ARGS_SUMMARY_MAX = 80
+
+/** The most identifying argument keys, in priority order (bash's command,
+ *  fs tools' paths, search's pattern, …). */
+const ARGS_SUMMARY_KEYS = ['command', 'file_path', 'path', 'pattern', 'query', 'url', 'prompt'] as const
+
+function flatTruncate(text: string): string {
+  const flat = text.replace(/\s+/g, ' ').trim()
+  return flat.length > ARGS_SUMMARY_MAX ? `${flat.slice(0, ARGS_SUMMARY_MAX - 1)}…` : flat
+}
+
+/**
+ * One-line summary of a tool call's raw arguments JSON for the collapsed
+ * row: the first identifying string field when the JSON parses, else the
+ * flattened raw text; empty when there is nothing worth showing.
+ */
+export function toolArgsSummary(args: string | undefined): string {
+  if (args === undefined) return ''
+  try {
+    const parsed = JSON.parse(args) as Record<string, unknown> | null
+    if (parsed !== null && typeof parsed === 'object' && !Array.isArray(parsed)) {
+      for (const key of ARGS_SUMMARY_KEYS) {
+        const value = parsed[key]
+        if (typeof value === 'string' && value.trim() !== '') return flatTruncate(value)
+      }
+    }
+  } catch {
+    // Raw text fallthrough.
+  }
+  return flatTruncate(args)
+}
+
+/** The plain text of a tool/result message (text blocks inside its
+ *  `tool-result` content block). */
+function resultTextOf(data: Record<string, unknown>): string {
+  const message = data.message as { content?: unknown } | undefined
+  const content = message?.content
+  if (!Array.isArray(content)) return ''
+  const parts: string[] = []
+  for (const block of content) {
+    if (block === null || typeof block !== 'object') continue
+    const candidate = block as { type?: unknown; content?: unknown }
+    if (candidate.type !== 'tool-result') continue
+    const inner = candidate.content
+    if (!Array.isArray(inner)) continue
+    for (const item of inner) {
+      if (item === null || typeof item !== 'object') continue
+      const textItem = item as { type?: unknown; text?: unknown }
+      if (textItem.type === 'text' && typeof textItem.text === 'string') {
+        parts.push(textItem.text)
+      }
+    }
+  }
+  return parts.join('\n')
+}
+
+/** Index of the last `session/end-seed` event (fork seed marker), or -1. */
+function lastSeedEnd(events: readonly { type: string }[]): number {
+  for (let index = events.length - 1; index >= 0; index--) {
+    if (events[index]?.type === 'session/end-seed') return index
+  }
+  return -1
+}
+
+/**
+ * Collect the thread's OWN events on first attach: walk backward from the
+ * log tail (oldest-first accumulation) until the `session/end-seed` marker
+ * surfaces, then keep everything after it.
+ *
+ * Page size matters: cold reads re-expand persisted chunk-rows into one
+ * `assistant/chunk` event per delta, so a single streamed answer can be
+ * HUNDREDS of events. A small walk window (the old 8×32 = 256 events) let
+ * earlier `tool/call` events fall out of the loaded window — the tool rows
+ * vanished on re-entry while the settled text survived. The walk therefore
+ * pages big; tail polls stay small.
+ *
+ * Exhaustion (log start reached without a marker — a thread created before
+ * seeding existed, or a pathological log) returns `seedBoundary: 0` so the
+ * caller stops re-walking and renders the window as-is.
+ *
+ * @param fetchPage - one history page (newest-first window ending at
+ *   `beforeSeq`, exclusive; omit for the tail page).
+ * @param pageCap - safety bound on backward pages.
+ */
+export async function collectOwnEvents(
+  fetchPage: (beforeSeq?: number) => Promise<readonly SidebarHistoryEntry[]>,
+  pageCap = 40,
+): Promise<{ seedBoundary: number; entries: SidebarHistoryEntry[] }> {
+  const collected: SidebarHistoryEntry[] = []
+  let beforeSeq: number | undefined
+  for (let page = 0; page < pageCap; page++) {
+    const events = await fetchPage(beforeSeq)
+    if (events.length === 0) {
+      // Log start reached without a marker: the window IS the whole log.
+      return { seedBoundary: 0, entries: collected }
+    }
+    const olderThan = collected.length > 0 ? collected[0]!.event.seq : undefined
+    const fresh = olderThan === undefined
+      ? [...events]
+      : events.filter(entry => entry.event.seq < olderThan)
+    const seedEnd = fresh.findLastIndex(entry => entry.event.type === 'session/end-seed')
+    if (seedEnd >= 0) {
+      collected.unshift(...fresh.slice(seedEnd + 1))
+      return { seedBoundary: fresh[seedEnd]!.event.seq, entries: collected }
+    }
+    collected.unshift(...fresh)
+    if (fresh.length === 0) {
+      // The page overlaps entirely with what we have: nothing older exists.
+      return { seedBoundary: 0, entries: collected }
+    }
+    beforeSeq = fresh[0]!.event.seq
+  }
+  // Cap hit: accept the window (it is overwhelmingly the thread's own tail)
+  // rather than re-walking on every poll.
+  return { seedBoundary: 0, entries: collected }
+}
+
+/**
+ * Map a thread child's history rows onto compact transcript rows: the
+ * inherited fork seed is cut at the last `session/end-seed`, context
+ * injections map onto a collapsible injection row, `assistant/chunk`
+ * deltas accumulate into streaming rows per (turn, step, block) and are
+ * superseded by the assembled `assistant/message`, and tool invocations
+ * render one expandable line each (arguments, paired result text, failure
+ * marker; a still-executing call is marked until its result lands).
+ * @param entries - history rows (event + host-computed view) in seq order.
+ * @returns display rows in log order.
+ */
+export function transcriptRows(entries: readonly SidebarHistoryEntry[]): SidechatTranscriptRow[] {
+  const events = entries.map(entry => entry.event)
+  const seedEnd = lastSeedEnd(events)
+  const rows: SidechatTranscriptRow[] = []
+  /** (turn, step, index, kind) key → index of its accumulating stream row. */
+  const streamRows = new Map<string, number>()
+  /** tool callId → index of its tool row in `rows` (result pairing). */
+  const callRows = new Map<string, number>()
+  for (let index = 0; index < events.length; index++) {
+    if (index <= seedEnd) continue
+    const event = events[index]
+    if (event === undefined) continue
+    const data = event.data as Record<string, unknown>
+    switch (event.type) {
+      case 'user/message': {
+        const text = blockText(Array.isArray(data.content) ? data.content : [])
+        // Context injections (the boundary prompt + snapshot, plugin-sourced
+        // context) collapse into an injection row; genuine user messages —
+        // including the FIRST one, which the host now delivers as its own
+        // event — render as user rows.
+        if (isContextInjectionMessage(data)) {
+          const source = data.source as { kind?: unknown } | undefined
+          // Threads logged BEFORE the host split carry boundary(+snapshot)+
+          // question in ONE 'user' message. The boundary prompt is a known
+          // constant, so the message splits THERE: the injection row keeps
+          // the prompt, the remainder (snapshot + question if any — pure
+          // question in the common case) renders as the user's real message.
+          if (source?.kind === 'user' && text.startsWith(`${SIDE_BOUNDARY_PROMPT}\n\n`)) {
+            rows.push({ kind: 'injection', seq: event.seq, text: SIDE_BOUNDARY_PROMPT })
+            const body = text.slice(SIDE_BOUNDARY_PROMPT.length + 2)
+            if (body !== '') rows.push({ kind: 'user', seq: event.seq, text: body })
+            break
+          }
+          rows.push({ kind: 'injection', seq: event.seq, text })
+          break
+        }
+        rows.push({ kind: 'user', seq: event.seq, text })
+        break
+      }
+      case 'assistant/chunk': {
+        const chunk = data.chunk as { type?: unknown; text?: unknown } | undefined
+        if (chunk === null || typeof chunk !== 'object') break
+        const kind = chunk.type === 'text-delta' ? 'assistant' : chunk.type === 'reasoning-delta' ? 'reasoning' : null
+        if (kind === null || typeof chunk.text !== 'string' || chunk.text === '') break
+        const turn = data.turn
+        const step = data.step
+        const blockIndex = (chunk as { index?: unknown }).index
+        const key = `${String(turn)}:${String(step)}:${String(blockIndex)}:${kind}`
+        const existing = streamRows.get(key)
+        if (existing !== undefined) {
+          const row = rows[existing]
+          if (row !== undefined && row.kind === kind && !row.settled) {
+            rows[existing] = { ...row, text: row.text + chunk.text }
+          }
+        } else {
+          streamRows.set(key, rows.length)
+          rows.push({ kind, seq: event.seq, text: chunk.text, settled: false })
+        }
+        break
+      }
+      case 'assistant/message': {
+        const prefix = `${String(data.turn)}:${String(data.step)}:`
+        const streamed = [...streamRows.entries()]
+          .filter(([key]) => key.startsWith(prefix))
+          .map(([, rowIndex]) => rowIndex)
+        for (const key of [...streamRows.keys()]) {
+          if (key.startsWith(prefix)) streamRows.delete(key)
+        }
+        const content = Array.isArray((data.message as { content?: unknown } | undefined)?.content)
+          ? (data.message as { content: readonly unknown[] }).content
+          : []
+        const settled: SidechatTranscriptRow[] = content.flatMap((block): SidechatTranscriptRow[] => {
+          if (block === null || typeof block !== 'object') return []
+          const candidate = block as { type?: unknown; text?: unknown }
+          if (candidate.type === 'reasoning' && typeof candidate.text === 'string' && candidate.text !== '') {
+            return [{ kind: 'reasoning', seq: event.seq, text: candidate.text, settled: true }]
+          }
+          if (candidate.type === 'text' && typeof candidate.text === 'string' && candidate.text !== '') {
+            return [{ kind: 'assistant', seq: event.seq, text: candidate.text, settled: true }]
+          }
+          return []
+        })
+        if (streamed.length === 0) rows.push(...settled)
+        else rows.splice(Math.min(...streamed), streamed.length, ...settled)
+        break
+      }
+      case 'tool/call': {
+        const callId = data.callId
+        const name = typeof data.name === 'string' ? data.name : 'tool'
+        const args = typeof data.arguments === 'string' ? data.arguments : undefined
+        const rowIndex = rows.length
+        if (typeof callId === 'string') callRows.set(callId, rowIndex)
+        rows.push({ kind: 'tool', seq: event.seq, name, failed: false, args, executing: true })
+        break
+      }
+      case 'tool/result': {
+        const source = data.message as { source?: { callId?: unknown } } | undefined
+        const callId = typeof source?.source?.callId === 'string' ? source.source.callId : undefined
+        const rowIndex = callId === undefined ? undefined : callRows.get(callId)
+        const failed = data.error !== undefined
+        const resultText = resultTextOf(data)
+        if (rowIndex !== undefined) {
+          const row = rows[rowIndex]
+          if (row !== undefined && row.kind === 'tool') {
+            rows[rowIndex] = {
+              ...row,
+              failed: row.failed || failed,
+              resultText: resultText === '' ? row.resultText : resultText,
+              executing: false,
+            }
+          }
+        } else if (failed || resultText !== '') {
+          // Orphan result (no call row in the window): surface it so the row
+          // stays informative and expandable.
+          rows.push({
+            kind: 'tool',
+            seq: event.seq,
+            name: callId === undefined ? 'tool' : `tool:${callId.slice(0, 8)}`,
+            failed,
+            resultText: resultText === '' ? undefined : resultText,
+          })
+        }
+        break
+      }
+      default: {
+        break
+      }
+    }
+  }
+  return rows
+}

src/client/split-pane.tsx

@@ -123,8 +123,9 @@ function LeafView(props: {
   onNewTab: (optionId: string) => void
   renderTab: (tab: SidebarTab, active: boolean, paneId: string) => ReactNode
   getTabIcon?: (tab: SidebarTab) => ReactNode
+  getTabBadge?: (tab: SidebarTab) => ReactNode
 }) {
-  const { leaf, newTabOptions, actions, onNewTab, renderTab, getTabIcon } = props
+  const { leaf, newTabOptions, actions, onNewTab, renderTab, getTabIcon, getTabBadge } = props
   const [dropZone, setDropZone] = useState<DropZone | null>(null)
   const activeTab = leaf.tabs.find(tab => tab.id === leaf.active) ?? leaf.tabs[leaf.tabs.length - 1]
 
@@ -178,6 +179,7 @@ function LeafView(props: {
         onNewTab={onNewTab}
         newTabOptions={newTabOptions}
         getTabIcon={getTabIcon}
+        getTabBadge={getTabBadge}
         onDropTab={(payload, before) => {
           if (before === null) actions.moveTabToEdge(payload, leaf.id, 'center')
           else actions.moveTabBefore(payload, leaf.id, before)
@@ -217,8 +219,9 @@ function NodeView(props: {
   onNewTab: (optionId: string) => void
   renderTab: (tab: SidebarTab, active: boolean, paneId: string) => ReactNode
   getTabIcon?: (tab: SidebarTab) => ReactNode
+  getTabBadge?: (tab: SidebarTab) => ReactNode
 }) {
-  const { node, state, newTabOptions, actions, onNewTab, renderTab, getTabIcon } = props
+  const { node, state, newTabOptions, actions, onNewTab, renderTab, getTabIcon, getTabBadge } = props
   if (node.kind === 'leaf') {
     return (
       <LeafView
@@ -228,6 +231,7 @@ function NodeView(props: {
         onNewTab={onNewTab}
         renderTab={renderTab}
         getTabIcon={getTabIcon}
+        getTabBadge={getTabBadge}
       />
     )
   }
@@ -254,6 +258,7 @@ function NodeView(props: {
               onNewTab={onNewTab}
               renderTab={renderTab}
               getTabIcon={getTabIcon}
+              getTabBadge={getTabBadge}
             />
           </div>
         </Fragment>
@@ -274,8 +279,9 @@ export function Workbench(props: {
   onNewTab: (optionId: string) => void
   renderTab: (tab: SidebarTab, active: boolean, paneId: string) => ReactNode
   getTabIcon?: (tab: SidebarTab) => ReactNode
+  getTabBadge?: (tab: SidebarTab) => ReactNode
 }) {
-  const { state, tree, newTabOptions, actions, onNewTab, renderTab, getTabIcon } = props
+  const { state, tree, newTabOptions, actions, onNewTab, renderTab, getTabIcon, getTabBadge } = props
   return (
     <div className={css.workbench}>
       <NodeView
@@ -286,6 +292,7 @@ export function Workbench(props: {
         onNewTab={onNewTab}
         renderTab={renderTab}
         getTabIcon={getTabIcon}
+        getTabBadge={getTabBadge}
       />
     </div>
   )

src/client/state.ts

@@ -10,10 +10,11 @@
  * operations are pure functions over the node, unit-tested in tests/state.spec.ts.
  */
 import { SIDEBAR_PREFS_DEFAULTS, type SidebarPrefs } from '../prefs-shared.ts'
+import { isNarrowWidth } from './breakpoints.ts'
 
 /**
- * Tab type identifier. Builtins register their ids (explorer / git / editor
- * / terminal / subagent / diff) through the sidebar service; external
+ * Tab type identifier. Builtins register their ids (editor / git / terminal
+ * / subagent / browser / diff) through the sidebar service; external
  * plugins register their own (e.g. `'my-plugin:db'`). Kept as `string` so
  * the registry stays open.
  */
@@ -24,14 +25,18 @@ export type SidebarDiffRef =
   | { kind: 'worktree'; path: string; staged: boolean; untracked?: boolean }
   | { kind: 'commit'; hash: string; hashFull: string; subject: string }
 
-/** One open tab. `path` carries the file (editor) or is absent (explorer/git);
- *  `diff` carries the change a diff tab shows. */
+/** One open tab. `path` carries the file (editor) or is absent (git/terminal);
+ *  `diff` carries the change a diff tab shows; `meta` (v0.12.0+) carries
+ *  plugin-owned JSON-serializable state, preserved across reloads. */
 export interface SidebarTab {
   id: string
   type: TabType
   title: string
   path?: string
   diff?: SidebarDiffRef
+  /** Plugin-owned state (v0.12.0+): MUST be JSON-serializable — it is
+   *  persisted with the layout and restored verbatim on reload. */
+  meta?: unknown
 }
 
 /** A tab group. */
@@ -100,6 +105,13 @@ function uid(prefix: string): string {
   return `${prefix}:${nextIdCounter}`
 }
 
+/** Mint a fresh uid-based tab id. The `'editor:' + path` convention only
+ *  covers openSidebarFile opens (per-path dedupe); opens that must not
+ *  dedupe (the tree's "open to the side") mint through here. */
+export function mintTabId(): string {
+  return uid('tab')
+}
+
 /**
  * The largest numeric suffix across a raw persisted state's counter ids
  * (`pane:N` / `tab:N` / `split:N`). The uid counter is module-global and
@@ -134,17 +146,24 @@ function maxCounterId(parsed: unknown): number {
   return max
 }
 
-/** A fresh default state: one explorer tab in one pane, open per the caller's
+/** The default tab a fresh session seeds. */
+export type DefaultSeed = 'editor-home' | 'none'
+
+/** A fresh default state: one seeded tab in one pane, open per the caller's
  * preference. `width` is the caller's preferred panel width (default
  * PANEL_DEFAULT) and `panelOpen` whether the panel starts expanded (default
  * true); the store seeds new sessions from the user's side card prefs.
- * `seedExplorer` places the default explorer tab — the store passes false
- * when the user disabled the explorer tab type in settings, so a fresh
- * session starts with an empty pane instead of a tab they turned off. */
-export function makeDefaultState(width = PANEL_DEFAULT, panelOpen = true, seedExplorer = true): SidebarState {
+ * `seed` picks the seeded tab: 'editor-home' places the EMPTY files window
+ * (an editor tab with no path whose tree panel starts open,
+ * `meta.treeOpen: true`) — in BOTH editorExplorer modes that window is the
+ * file explorer page — and 'none' starts with an empty pane (the store
+ * passes it when the user disabled the editor tab type in settings). */
+export function makeDefaultState(width = PANEL_DEFAULT, panelOpen = true, seed: DefaultSeed = 'editor-home'): SidebarState {
   const leaf: SidebarLeaf = { kind: 'leaf', id: uid('pane'), tabs: [], active: null }
-  if (seedExplorer) {
-    leaf.tabs = [{ id: uid('tab'), type: 'explorer', title: 'Explorer' }]
+  if (seed === 'editor-home') {
+    // No path: the editor host renders its empty-state hint and the docked
+    // tree panel (treeOpen defaults open for path-less tabs; meta pins it).
+    leaf.tabs = [{ id: uid('tab'), type: 'editor', title: 'Files', meta: { treeOpen: true } }]
     leaf.active = leaf.tabs[0]!.id
   }
   // The bottom panel starts closed with an empty pane (its welcome cards
@@ -205,6 +224,44 @@ export function firstLeaf(node: SplitNode): SidebarLeaf {
   return firstLeaf(node.children[0]!)
 }
 
+/** Empty every leaf of a tree (the bottom tree after its tabs migrate out). */
+function clearAllTabs(node: SplitNode): SplitNode {
+  if (node.kind === 'leaf') return { ...node, tabs: [], active: null }
+  return { ...node, children: node.children.map(clearAllTabs) }
+}
+
+/**
+ * Narrow-viewport migration: the bottom panel's tabs are thrown INTO the
+ * right sidebar — the "merged display" on mobile is the right panel alone,
+ * whose tab strips now carry the bottom tree's tabs (depth-first order,
+ * appended to the right tree's FIRST leaf). The bottom tree is emptied (its
+ * structure stays — the desktop bottom panel re-renders its welcome cards)
+ * and the panel closes. The active pane moves to the right tree's first
+ * leaf so every new tab lands in the visible panel.
+ *
+ * Idempotent: a bottom tree with no tabs and a closed panel returns the
+ * same reference. Runs when the viewport enters narrow (see the Sidebar
+ * shell); migrating is permanent for the session — the tabs now live in the
+ * right tree, exactly like the user "threw them in".
+ */
+export function migrateBottomTabs(state: SidebarState): SidebarState {
+  const bottomTabs = allLeaves(state.bottomSplits).flatMap(leaf => leaf.tabs)
+  const activeInBottom = state.activePane !== null && treeHasId(state.bottomSplits, state.activePane)
+  if (bottomTabs.length === 0 && !state.bottomOpen && !activeInBottom) return state
+  const target = firstLeaf(state.splits)
+  return {
+    ...state,
+    activePane: target.id,
+    bottomOpen: false,
+    splits: bottomTabs.length > 0
+      ? mapLeaf(state.splits, target.id, leaf => {
+        leaf.tabs = [...leaf.tabs, ...bottomTabs]
+      })
+      : state.splits,
+    bottomSplits: bottomTabs.length > 0 ? clearAllTabs(state.bottomSplits) : state.bottomSplits,
+  }
+}
+
 /** Find the leaf containing a tab id, if any. */
 export function leafWithTab(node: SplitNode, tabId: string): SidebarLeaf | undefined {
   if (node.kind === 'leaf') {
@@ -393,14 +450,14 @@ export function activateTab(state: SidebarState, paneId: string, tabId: string):
   }
 }
 
-/** Update the display fields of one open tab (title / path) without
+/** Update the display fields of one open tab (title / path / meta) without
  *  re-opening it. The browser tab persists its current URL and hostname
  *  title through this reducer so a reload restores the visited page. A
  *  missing tab id is a no-op. The tab may live in either tree. */
 export function patchTab(
   state: SidebarState,
   tabId: string,
-  patch: { title?: string; path?: string },
+  patch: { title?: string; path?: string; meta?: unknown },
 ): SidebarState {
   let changed = false
   const walk = (node: SplitNode): SplitNode => {
@@ -412,6 +469,7 @@ export function patchTab(
           ...tab,
           ...(patch.title !== undefined ? { title: patch.title } : {}),
           ...(patch.path !== undefined ? { path: patch.path } : {}),
+          ...(patch.meta !== undefined ? { meta: patch.meta } : {}),
         }
       })
       return tabs === node.tabs ? node : { ...node, tabs }
@@ -720,13 +778,21 @@ function loadState(sessionId: string, prefs: SidebarPrefs): SidebarState {
   // New sessions seed from the user's side card prefs: the width is the
   // chosen percent of the window (clamped to the panel floor and the
   // viewport so a huge percent can never crush the app shell), the panel
-  // starts open only when the preference says so, and the default explorer
-  // tab is skipped when the user disabled the explorer tab type.
+  // starts open only when the preference says so, and the seed tab is the
+  // empty files window (tree panel open) in BOTH editorExplorer modes — a
+  // disabled editor type seeds nothing. On a NARROW viewport a brand-new
+  // session starts collapsed instead — the panel is a full-screen drawer
+  // there, and auto-opening it on first paint would cover the conversation
+  // before the user asked. Only the first seeding is affected: once the
+  // user expands the drawer, `panelOpen: true` persists like any other
+  // state.
   const viewport = typeof window !== 'undefined' ? window.innerWidth : undefined
   const width = viewport === undefined
     ? PANEL_DEFAULT
     : defaultWidthFor(viewport, prefs.defaultWidthPercent)
-  return makeDefaultState(width, prefs.openByDefault, prefs.tabsEnabled['explorer'] !== false)
+  const openByDefault = prefs.openByDefault && (viewport === undefined || !isNarrowWidth(viewport))
+  const seed: DefaultSeed = prefs.tabsEnabled['editor'] === false ? 'none' : 'editor-home'
+  return makeDefaultState(width, openByDefault, seed)
 }
 
 /**
@@ -841,11 +907,30 @@ function sanitizeNode(node: unknown, seen: Set<string>, reid: Map<string, string
       // accept any string type here — an unregistered type renders an
       // <OrphanedTab/> at view time and recovers if its plugin loads later.
       if (typeof candidate.type !== 'string') return undefined
+      // The standalone explorer tab type merged INTO the editor (the single
+      // files window): a persisted explorer tab reopens as an editor home
+      // tab — no path, tree panel open (an existing meta object survives).
+      if (candidate.type === 'explorer') {
+        const meta = candidate.meta !== null && typeof candidate.meta === 'object' && !Array.isArray(candidate.meta)
+          ? candidate.meta as Record<string, unknown>
+          : undefined
+        tabs.push({
+          id: candidate.id,
+          type: 'editor',
+          title: 'Files',
+          meta: { treeOpen: true, ...meta },
+        })
+        continue
+      }
+      // `meta` is plugin-owned JSON-serializable state (v0.12.0+): the
+      // persisted value already went through JSON.parse, so it is inherently
+      // serializable — carry it through verbatim (absent on older states).
       tabs.push({
         id: candidate.id,
         type: candidate.type,
         title: candidate.title,
         ...(typeof candidate.path === 'string' ? { path: candidate.path } : {}),
+        ...(candidate.meta !== undefined ? { meta: candidate.meta } : {}),
       })
     }
     const active = typeof record.active === 'string' ? record.active : null
@@ -884,9 +969,31 @@ export class SidebarStore {
     prefs: { ...SIDEBAR_PREFS_DEFAULTS },
   }
   private readonly listeners = new Set<() => void>()
-  private persistTimer: number | undefined
+  /** Per-session persist debounce timers (v0.12.0+: one per session, so a
+   *  targeted open never cancels another session's pending write). */
+  private readonly persistTimers = new Map<string, number>()
   /** User-facing side card prefs seeding brand-new session states (defaults until the settings RPC resolves). */
   private prefs: SidebarPrefs = { ...SIDEBAR_PREFS_DEFAULTS }
+  /**
+   * External disable (the dsh-web-ui family's aionui-panel provider choice):
+   * while true the sidebar must not mount at all. Not part of the snapshot —
+   * nothing renders on it; the mount gate and the intercept predicates read
+   * it directly.
+   */
+  private suspended = false
+
+  /**
+   * Set the external-disable flag (from the settings route) and remember it
+   * for the mount gate and the intercept predicates.
+   */
+  setSuspended(suspended: boolean): void {
+    this.suspended = suspended
+  }
+
+  /** Whether the sidebar is externally disabled (aionui-panel chosen). */
+  getSuspended(): boolean {
+    return this.suspended
+  }
 
   /**
    * Replace the side card prefs (the settings RPC result / settings page
@@ -969,21 +1076,67 @@ export class SidebarStore {
     const state = this.snapshot.state
     if (sessionId === undefined || state === undefined) return
     const next = reducer(state)
+    // A reducer returning the SAME reference means "no change": skip the
+    // persist + notify entirely — strict no-op paths (unknown tab ids,
+    // patchTab on a missing tab) must not churn the state or rewrite
+    // localStorage.
+    if (next === state) return
     this.bySession.set(sessionId, next)
     this.snapshot = { sessionId, state: next, prefs: this.prefs }
     this.schedulePersist(sessionId, next)
     this.notify()
   }
 
+  /**
+   * Apply a pure reducer to a TARGET session's state (not the active one),
+   * loading it on demand and persisting the result — WITHOUT switching the
+   * active snapshot or notifying (the UI must not follow along). Used by the
+   * service's targeted `openTab(seed, scope)`: the open lands in the target
+   * session's layout and is visible whenever the user switches to it.
+   */
+  reduceFor(sessionId: string, reducer: (state: SidebarState) => SidebarState): void {
+    // The uid counter is SHARED across sessions, and the ACTIVE session's
+    // safety requires it to never drop below the ids IT minted. Seeding it
+    // from the target's max may LOWER it (a cached target older than the
+    // active session): restoring the pre-call level afterwards keeps the
+    // active session's next mint collision-free — ids minted for the target
+    // only need to exceed the target's own max, which the seed guaranteed.
+    const counterBefore = nextIdCounter
+    let state = this.bySession.get(sessionId)
+    if (state === undefined) {
+      state = loadState(sessionId, this.prefs)
+      this.bySession.set(sessionId, state)
+    } else {
+      // Re-seed the uid counter past THIS session's persisted ids, exactly
+      // like setSession's cache-hit path.
+      nextIdCounter = maxCounterId(state)
+    }
+    const next = reducer(state)
+    // Same-reference result = no change: keep the counter restore (it may
+    // have been seeded down) but skip the write.
+    nextIdCounter = Math.max(nextIdCounter, counterBefore)
+    if (next === state) return
+    this.bySession.set(sessionId, next)
+    this.schedulePersist(sessionId, next)
+  }
+
   private schedulePersist(sessionId: string, state: SidebarState): void {
-    window.clearTimeout(this.persistTimer)
-    this.persistTimer = window.setTimeout(() => {
+    // Per-session debounce timers: one session's pending write must never
+    // cancel another's (targeted opens schedule writes for INACTIVE
+    // sessions while the active session may already have one pending —
+    // a shared timer would drop the earlier write and the reload would
+    // lose that session's layout).
+    const existing = this.persistTimers.get(sessionId)
+    if (existing !== undefined) window.clearTimeout(existing)
+    const timer = window.setTimeout(() => {
+      this.persistTimers.delete(sessionId)
       try {
         localStorage.setItem(`${STORAGE_PREFIX}:${sessionId}`, JSON.stringify(state))
       } catch {
         // Storage full or unavailable: layout memory is best-effort.
       }
     }, 200)
+    this.persistTimers.set(sessionId, timer)
   }
 
   private notify(): void {

src/client/subagent-activity.ts

@@ -1,67 +0,0 @@
-/**
- * Pure derivation of the compact LIVE line shown on a running subagent card:
- * the last text output and the last tool call of the child's history tail
- * (`subagent.history` events, oldest → newest). Renders nothing itself — the
- * SubagentLiveLine component turns this into the card's status lines.
- * Kept framework-free so the parser is unit-testable in the node environment.
- */
-import type { SidebarHistoryEntry } from '../context-types.ts'
-
-/**
- * Extract the concatenated plain text of a content-block list (the durable
- * `ContentBlock[]` shape, structurally: blocks with `type: 'text'` carry
- * `text`; anything else — tool_use, image, … — contributes nothing).
- * @param content - the raw `content` field of a message event.
- * @returns the joined text, or undefined when the message carries no text.
- */
-export function contentText(content: unknown): string | undefined {
-  if (!Array.isArray(content)) return undefined
-  const parts: string[] = []
-  for (const block of content) {
-    if (block === null || typeof block !== 'object') continue
-    const candidate = block as { type?: unknown; text?: unknown }
-    if (candidate.type === 'text' && typeof candidate.text === 'string') {
-      parts.push(candidate.text)
-    }
-  }
-  return parts.length > 0 ? parts.join('\n') : undefined
-}
-
-/** The live status of one subagent card (both fields optional). */
-export interface LastActivity {
-  /** The latest assembled assistant text output in the tail. */
-  text?: string
-  /** The latest tool call in the tail. */
-  tool?: { name: string; args: string }
-}
-
-/**
- * Fold a history tail into the last text output + last tool call (each is
- * the LAST occurrence in event order). Lifecycle events and raw
- * `assistant/chunk` rows are ignored — the card shows what the subagent is
- * doing right now, not its plumbing.
- * @param entries - the tail page from `subagent.history` (oldest → newest).
- * @returns the last text and/or tool call; an empty object when the tail has neither.
- */
-export function lastActivity(entries: SidebarHistoryEntry[]): LastActivity {
-  let text: string | undefined
-  let tool: { name: string; args: string } | undefined
-  for (const entry of entries) {
-    const { type, data } = entry.event
-    if (type === 'assistant/message') {
-      const message = data.message as { content?: unknown } | undefined
-      const extracted = contentText(message?.content)
-      if (extracted !== undefined) text = extracted
-    } else if (type === 'tool/call') {
-      tool = {
-        name: typeof data.name === 'string' ? data.name : 'tool',
-        args: typeof data.arguments === 'string' ? data.arguments : '',
-      }
-    }
-  }
-  if (text === undefined && tool === undefined) return {}
-  return {
-    ...(text === undefined ? {} : { text }),
-    ...(tool === undefined ? {} : { tool }),
-  }
-}