diff --git a/docs/external-plugin-guide.md b/docs/external-plugin-guide.md
index bf31047..6f28f87 100644
--- a/docs/external-plugin-guide.md
+++ b/docs/external-plugin-guide.md
@@ -783,4 +783,6 @@ better-sidebar 的内置 tab 和 viewer 就是参考实现（"吃狗粮"）：
 - **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）。
diff --git a/src/client/locales.ts b/src/client/locales.ts
index 448171a..c5ab98b 100644
--- a/src/client/locales.ts
+++ b/src/client/locales.ts
@@ -219,6 +219,7 @@ export const zh = {
   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',
+  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',
 }
 
 /** The en dictionary (key-set-equal to zh, enforced by the type annotation). */
@@ -431,6 +432,7 @@ export const en: Record<keyof typeof zh, string> = {
   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',
+  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',
 }
 
 /**
diff --git a/src/client/plugins-tabs.ts b/src/client/plugins-tabs.ts
index a9bd73d..a7a9e97 100644
--- a/src/client/plugins-tabs.ts
+++ b/src/client/plugins-tabs.ts
@@ -24,4 +24,13 @@ export const builtinTabPlugins: readonly PluginEntry[] = [
     // context consistent with the other entries.
     install: 'cd ~/.dsh && dsh plugin --profile web add "github:fuhefei/dsh-sentinel#v0.7.0"',
   },
+  {
+    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',
+  },
 ]