feat(chat): Enhance session management with new API endpoints and filtering options

- Added `status` query parameter to `list_sessions_api` for filtering sessions by their status (active/closed).
- Introduced `close_all_sessions_api` endpoint to allow users to close all active sessions for the current actor.
- Updated `SessionRepository` to support status filtering in session listing and implemented logic for closing active sessions.
- Improved Redis connection settings for better performance and reliability.

This update enhances the chat functionality by providing more control over session management, improving user experience and system efficiency.

docs/course/index.html

@@ -123,13 +123,19 @@
       <p class="lead">面向 vibe coder 的仓库导览：滚动式模块、代码白话对照、动效与测验。直接用浏览器打开各课程 <code>index.html</code>，无需安装。</p>
     </header>
 
-    <p class="section-label">总览</p>
+    <p class="section-label">总览 · 答辩</p>
     <div class="grid">
       <a class="card" href="jinrong-overview/index.html">
         <span class="card-accent" style="background:#2A7B9B"></span>
         <h2>JinRong 项目现状</h2>
-        <p>四角色、JWT 双通道、数据从哪来、merger 分支做到哪——5 分钟建立仓库地图。</p>
-        <span class="tag">7 模块 · 入门首选</span>
+        <p>四角色、JWT 双通道、数据从哪来、merger 做到哪——含<strong>模块 8 答辩动线</strong>（804 pytest 基线）。</p>
+        <span class="tag">8 模块 · 入门首选</span>
+      </a>
+      <a class="card" href="../答辩/答辩知识点清单.md">
+        <span class="card-accent" style="background:#C45C3E"></span>
+        <h2>答辩知识点清单（Markdown）</h2>
+        <p>总架构、数据流、分 Agent 亮点、Demo 动线、诚实边界、Q&amp;A 锚点——与交互课同步。</p>
+        <span class="tag">docs/答辩 · 可打印提纲</span>
       </a>
     </div>
 
@@ -139,7 +145,7 @@
         <span class="card-accent" style="background:#2D8B55"></span>
         <h2>客户财富 Agent 深潜</h2>
         <p>客户 SSE 对话、14 节点 LangGraph、口吻护栏、两套 RAG、合规 vs 一期拒答。</p>
-        <span class="tag">customer_service · 5 模块</span>
+        <span class="tag">customer_service · 7 模块</span>
       </a>
       <a class="card" href="jinrong-module-advisor/index.html">
         <span class="card-accent" style="background:#8B6B4A"></span>
@@ -150,14 +156,14 @@
       <a class="card" href="jinrong-module-analyst/index.html">
         <span class="card-accent" style="background:#6B5B95"></span>
         <h2>数据分析 Agent 深潜</h2>
-        <p>问数 NL2SQL、dashboard 指标、问数红线、口径种子排障。</p>
-        <span class="tag">analyst · /api/analyst · 4 模块</span>
+        <p>问数 NL2SQL、D-06 模板/结果缓存、dashboard、问数红线、口径种子排障。</p>
+        <span class="tag">analyst · /api/analyst · 5 模块</span>
       </a>
       <a class="card" href="jinrong-module-risk/index.html">
         <span class="card-accent" style="background:#B84A4A"></span>
         <h2>风控监测 Agent 深潜</h2>
-        <p>预警台账、AML 只读 Tool、模拟交易、cron/空台账演示边界。</p>
-        <span class="tag">risk · X-Agent-Type: risk · 4 模块</span>
+        <p>预警台账、AML 只读 Tool、模拟交易、写侧并发（模块 7）、cron/空台账演示边界。</p>
+        <span class="tag">risk · X-Agent-Type: risk · 7 模块</span>
       </a>
       <a class="card" href="jinrong-module-platform/index.html">
         <span class="card-accent" style="background:#E06B56"></span>
@@ -168,7 +174,7 @@
       <a class="card" href="jinrong-module-frontend/index.html">
         <span class="card-accent" style="background:#132B3A"></span>
         <h2>前端 web 深潜</h2>
-        <p>四角色 HashRouter、Chat 鉴权差异、未接线清单、会话 B 三端点。</p>
+        <p>四角色 HashRouter、Chat 鉴权差异、useAsyncSequence 竞态、问数标签、未接线清单。</p>
         <span class="tag">web/ · React · 4 模块</span>
       </a>
       <a class="card" href="jinrong-module-shared/index.html">