diff --git a/docs/plans/2026-08-14-add-plugins-modal-design.md b/docs/plans/2026-08-14-add-plugins-modal-design.md
index 9cb21df..458fab9 100644
--- a/docs/plans/2026-08-14-add-plugins-modal-design.md
+++ b/docs/plans/2026-08-14-add-plugins-modal-design.md
@@ -27,7 +27,7 @@
 ### 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`（当前为空，空态展示）。
+- `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`
@@ -47,7 +47,7 @@
 ## 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**：Tab 目录当前为空，弹窗渲染空态 + topic 按钮。
+- **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
diff --git a/src/client/locales.ts b/src/client/locales.ts
index 6d5915c..448171a 100644
--- a/src/client/locales.ts
+++ b/src/client/locales.ts
@@ -218,6 +218,7 @@ export const zh = {
   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',
+  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',
 }
 
 /** The en dictionary (key-set-equal to zh, enforced by the type annotation). */
@@ -429,6 +430,7 @@ export const en: Record<keyof typeof zh, string> = {
   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',
+  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',
 }
 
 /**
diff --git a/src/client/plugins-tabs.ts b/src/client/plugins-tabs.ts
index 372e5a4..a9bd73d 100644
--- a/src/client/plugins-tabs.ts
+++ b/src/client/plugins-tabs.ts
@@ -3,13 +3,25 @@
  * 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, `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`.
+ * 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 (empty until a real one exists — the modal
- *  renders the empty state and points at the GitHub topic). */
-export const builtinTabPlugins: readonly PluginEntry[] = []
+/** 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"',
+  },
+]
diff --git a/tests/add-plugin-modal.spec.tsx b/tests/add-plugin-modal.spec.tsx
index 7cb5e7b..b1ec09b 100644
--- a/tests/add-plugin-modal.spec.tsx
+++ b/tests/add-plugin-modal.spec.tsx
@@ -48,11 +48,12 @@ describe('PluginListBody (render)', () => {
     expect(html).toContain('Copy')
   })
 
-  it('tab kind renders its own empty state (no office entry)', () => {
+  it('tab kind renders the sentinel entry (its own catalog, no office entry)', () => {
     const store = createSidebarStore()
     const service = createBetterSidebarService(store)
     const html = renderToString(createElement(PluginListBody, { service, kind: 'tab' }))
-    expect(html).toContain('No plugins curated yet')
+    expect(html).toContain('dsh-sentinel 唤醒系统')
+    expect(html).toContain('github:fuhefei/dsh-sentinel')
     expect(html).not.toContain(officeEntry.name)
   })
 })
@@ -75,7 +76,7 @@ describe('AddPluginModal wiring', () => {
       if (kind === 'viewer') {
         expect(html).toContain(officeEntry.name)
       } else {
-        expect(html).toContain('No plugins curated yet')
+        expect(html).toContain('dsh-sentinel 唤醒系统')
       }
       act(() => { root.unmount() })
       container.remove()
diff --git a/tests/plugin-list.spec.ts b/tests/plugin-list.spec.ts
index d14909f..4677405 100644
--- a/tests/plugin-list.spec.ts
+++ b/tests/plugin-list.spec.ts
@@ -24,9 +24,10 @@ const catalogs: Array<[string, readonly PluginEntry[]]> = [
 ]
 
 describe('builtin plugin catalogs', () => {
-  it('the viewer catalog has the seeded office plugin, the tab catalog does not', () => {
+  it('the viewer catalog has the office plugin, the tab catalog has the sentinel plugin', () => {
     const ids = (list: readonly PluginEntry[]): string[] => list.map(p => p.id)
     expect(ids(builtinViewerPlugins)).toContain('@huanlin/dsh-plugin-better-sidebar-plugin-office')
+    expect(ids(builtinTabPlugins)).toContain('@dsh-external/dsh-sentinel')
     expect(ids(builtinTabPlugins)).not.toContain('@huanlin/dsh-plugin-better-sidebar-plugin-office')
   })