feat: v0.5.0 审计修复版 — 类型基线重建 + 会话隔离 + SubAgent 可观测性 + 三项功能补全

P0 安全与工程基线（止血）:
- .npmrc 移除硬编码 Gitea npm 凭据，改为 GITEA_NPM_AUTH 环境变量注入（已验证未设变量时 401）
- 修复 typecheck 空操作缺陷：solution-style 根 tsconfig 改为双工程真检查（node + web），
  pre-commit 与 CI 门禁恢复拦截能力
- 修复 4 处 v0.4.1 遗留类型错误：confirmation-hook.test 枚举名 FILE_SYSTEM→FILESYSTEM、
  agent.ts VALIDATION 事件 severity 类型谓词收窄、ContextMenu.tsx 导出 attachments 类型
- 补装 v0.4.1 声明但未安装的 node-html-parser 依赖

P1 逻辑缺陷修复（跨模块边界）:
- ConfirmationHook 会话隔离：rememberedDecisions 与 pendingConfirmations 按 sessionId 隔离，
  abortSession 只清本会话 pending（修复 A 会话中断误杀 B 会话确认、拒绝记忆跨会话污染）
- SubAgent 可观测性：orchestrator 六个事件此前全项目零消费者，现接入
  ① subagent:event 生命周期广播（AgentMonitor 新增 SubAgent 状态区）
  ② SubEngine 流事件独立 TRACE 录制（sessionId=taskId 的 JSONL 文件）
- main.ts 启动链路异常兜底：初始化失败时记录日志 + 系统错误对话框 + 退出（原为白屏挂起）

P2 工程强化:
- CI：typecheck 双工程真检查；electron-test 从 experimental（continue-on-error）转正为阻塞门禁；
  GITEA_NPM_AUTH secret 注入说明
- 渲染 bundle 代码分割：单 2630KB chunk 拆为 main 557KB + vendor-react/mui/markdown/icons
  （业务代码变更不再使 vendor 缓存失效）
- database 建表 mcp_servers CHECK 直接含 streamable-http（新库不再依赖迁移 6 立即重建）

P3 功能补全:
- DeepSeek 余额显示：新增 llm:getBalance IPC + LLMSettings 余额卡片（复用适配器原死代码 getBalance）
- FTS5 会话内容搜索：messages_fts 虚表 + INSERT/UPDATE/DELETE 触发器实时同步 +
  存量库 rebuild 迁移 + sessions:searchContent IPC + Sidebar 搜索框标题∪内容联合搜索
  （短语转义防 FTS 运算符注入，按会话聚合展示 snippet）
- 审计日志导出：audit:export IPC（JSONL / CSV RFC 4180 转义）+ LogsSettings 导出按钮

文档一致性大扫除:
- README：工具数统一为 28（原 26/27/30 三口径）、handlers.ts→ipc/、录制事件名更正、
  删除虚构的审计导出/归档宣称与 Schema 虚构字段、MCP 三种传输、配置 key 更正、
  项目结构树对齐实际（settings 10 文件/lib 6 文件/react-virtuoso）、clone 地址改为 Gitea、
  新增 GITEA_NPM_AUTH 配置说明、测试数 207
- 架构/构建指南/UI UX/IR 标准 4 份 HTML 设计文档同步修正（工具数、表数 10、
  磁盘文件 2 个现状注记、ipc/*.ts 路径）
- eslint.config.js 与开发规范.md 注释对齐零容忍基线与 better-sqlite3 选型

测试: 199→207 用例（新增 ConfirmationHook 跨会话隔离 5 用例 + FTS5 搜索/审计导出 8 用例）
验证: lint 0 problems / typecheck 双工程 0 errors / test:electron 207 全过 / build 成功

src/components/layout/AgentMonitor.tsx

@@ -4,14 +4,48 @@
  * 完全使用 MUI 组件，Table 布局标签-值对。
  */
 
-import { Box, Typography, Stack, Table, TableBody, TableRow, TableCell } from '@mui/material';
-import { Activity, Cpu } from 'lucide-react';
-import { useEffect, useMemo } from 'react';
+import { Box, Typography, Stack, Table, TableBody, TableRow, TableCell, Chip } from '@mui/material';
+import { Activity, Cpu, Bot } from 'lucide-react';
+import { useEffect, useMemo, useState } from 'react';
 import { useAgentStore, type AgentStatus } from '@renderer/stores/agent-store';
 import { AGENT_STATUS_COLORS, AGENT_STATUS_LABELS, PROVIDER_LABELS } from '@renderer/lib/constants';
 import { formatDuration } from '@renderer/lib/formatters';
 
-const STATUS_ICONS: Record<AgentStatus, typeof Activity> = { idle: Activity, thinking: Cpu, executing: Cpu, error: Activity };
+const STATUS_ICONS: Record<AgentStatus, typeof Activity> = {
+  idle: Activity,
+  thinking: Cpu,
+  executing: Cpu,
+  error: Activity,
+};
+
+/** v0.5.0: SubAgent 状态区条目 */
+interface SubAgentItem {
+  taskId: string;
+  description: string;
+  status: 'delegated' | 'running' | 'completed' | 'error';
+  depth: number;
+  durationMs?: number;
+  iterations?: number;
+  error?: string;
+  updatedAt: number;
+}
+
+/** SubAgent 状态展示上限（防长会话无限累积） */
+const MAX_SUBAGENT_ITEMS = 20;
+
+const SUB_STATUS_COLORS: Record<SubAgentItem['status'], string> = {
+  delegated: '#fbbf24',
+  running: '#a855f7',
+  completed: '#34d399',
+  error: '#f87171',
+};
+
+const SUB_STATUS_LABELS: Record<SubAgentItem['status'], string> = {
+  delegated: '已委派',
+  running: '运行中',
+  completed: '已完成',
+  error: '失败',
+};
 
 export function AgentMonitor(): React.JSX.Element {
   const agentStatus = useAgentStore((s) => s.agentStatus);
@@ -21,20 +55,57 @@ export function AgentMonitor(): React.JSX.Element {
   const maxIterations = useAgentStore((s) => s.maxIterations);
   const traceSteps = useAgentStore((s) => s.traceSteps);
   const setMaxIterations = useAgentStore((s) => s.setMaxIterations);
+  const sessionId = useAgentStore((s) => s.currentSessionId);
+
+  // v0.5.0: SubAgent 状态（监听主进程生命周期事件，按父会话过滤）
+  const [subAgents, setSubAgents] = useState<SubAgentItem[]>([]);
+
+  useEffect(() => {
+    if (!window.metona?.agent?.onSubAgentEvent) return;
+    const unsubscribe = window.metona.agent.onSubAgentEvent((e) => {
+      // 只展示当前会话派生的 SubAgent
+      if (!sessionId || e.parentSessionId !== sessionId) return;
+      setSubAgents((prev) => {
+        const next = prev.filter((item) => item.taskId !== e.taskId);
+        next.unshift({
+          taskId: e.taskId,
+          description: e.description,
+          status: e.status,
+          depth: e.depth,
+          durationMs: e.durationMs,
+          iterations: e.iterations,
+          error: e.error,
+          updatedAt: Date.now(),
+        });
+        return next.slice(0, MAX_SUBAGENT_ITEMS);
+      });
+    });
+    return unsubscribe;
+  }, [sessionId]);
+
+  // 切换会话时清空（新会话的 SubAgent 从零开始）
+  useEffect(() => {
+    setSubAgents([]);
+  }, [sessionId]);
 
   useEffect(() => {
     // M-11/M-28 修复: 添加 cancelled 标志 + 错误日志记录
     let cancelled = false;
     if (window.metona?.config?.get) {
-      window.metona.config.get('agent.maxIterations').then((v) => {
-        if (cancelled) return;
-        if (typeof v === 'number' && v > 0) setMaxIterations(v);
-      }).catch((err) => {
-        // M-11 修复: 记录错误而非静默吞掉，便于诊断配置加载异常
-        console.error('[AgentMonitor] Failed to load maxIterations:', err);
-      });
+      window.metona.config
+        .get('agent.maxIterations')
+        .then((v) => {
+          if (cancelled) return;
+          if (typeof v === 'number' && v > 0) setMaxIterations(v);
+        })
+        .catch((err) => {
+          // M-11 修复: 记录错误而非静默吞掉，便于诊断配置加载异常
+          console.error('[AgentMonitor] Failed to load maxIterations:', err);
+        });
     }
-    return () => { cancelled = true; };
+    return () => {
+      cancelled = true;
+    };
   }, [setMaxIterations]);
 
   // L-14 修复: 使用 useMemo 缓存 totalDuration，避免每次渲染都遍历 traceSteps 数组
@@ -51,24 +122,56 @@ export function AgentMonitor(): React.JSX.Element {
     <Box sx={{ mt: 2, pt: 2, borderTop: 1, borderColor: 'divider', flexShrink: 0 }}>
       <Stack direction="row" spacing={1} sx={{ mb: 1.5, alignItems: 'center' }}>
         <Cpu size={14} style={{ color: '#818cf8' }} />
-        <Typography variant="caption" sx={{ fontWeight: 600, textTransform: 'uppercase', letterSpacing: 1, color: 'text.secondary' }}>
+        <Typography
+          variant="caption"
+          sx={{
+            fontWeight: 600,
+            textTransform: 'uppercase',
+            letterSpacing: 1,
+            color: 'text.secondary',
+          }}
+        >
           Agent 状态
         </Typography>
       </Stack>
 
       {/* 状态指示 */}
-      <Box sx={{ px: 1.5, py: 1, borderRadius: 1.5, mb: 1.5, bgcolor: 'background.default', border: '1px solid', borderColor: 'divider' }}>
+      <Box
+        sx={{
+          px: 1.5,
+          py: 1,
+          borderRadius: 1.5,
+          mb: 1.5,
+          bgcolor: 'background.default',
+          border: '1px solid',
+          borderColor: 'divider',
+        }}
+      >
         <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
           <StatusIcon
             size={14}
             style={{
               color: statusColor,
-              animation: (agentStatus === 'thinking' || agentStatus === 'executing') ? 'pulse 2s infinite' : 'none',
+              animation:
+                agentStatus === 'thinking' || agentStatus === 'executing'
+                  ? 'pulse 2s infinite'
+                  : 'none',
             }}
           />
-          <Typography variant="caption" sx={{ fontWeight: 500, color: statusColor }}>{statusLabel}</Typography>
+          <Typography variant="caption" sx={{ fontWeight: 500, color: statusColor }}>
+            {statusLabel}
+          </Typography>
           {(agentStatus === 'thinking' || agentStatus === 'executing') && (
-            <Box sx={{ width: 6, height: 6, borderRadius: '50%', bgcolor: statusColor, animation: 'pulse 1.5s infinite', ml: 'auto' }} />
+            <Box
+              sx={{
+                width: 6,
+                height: 6,
+                borderRadius: '50%',
+                bgcolor: statusColor,
+                animation: 'pulse 1.5s infinite',
+                ml: 'auto',
+              }}
+            />
           )}
         </Stack>
       </Box>
@@ -77,33 +180,182 @@ export function AgentMonitor(): React.JSX.Element {
       <Table size="small" sx={{ '& .MuiTableCell-root': { border: 0, py: 0.5, px: 0.5 } }}>
         <TableBody>
           <TableRow>
-            <TableCell sx={{ color: 'text.secondary', fontSize: 11, width: '40%' }}>Provider</TableCell>
-            <TableCell sx={{ fontFamily: 'monospace', fontWeight: 600, fontSize: 11, color: 'text.primary', textAlign: 'right', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap', maxWidth: 0 }}>
+            <TableCell sx={{ color: 'text.secondary', fontSize: 11, width: '40%' }}>
+              Provider
+            </TableCell>
+            <TableCell
+              sx={{
+                fontFamily: 'monospace',
+                fontWeight: 600,
+                fontSize: 11,
+                color: 'text.primary',
+                textAlign: 'right',
+                overflow: 'hidden',
+                textOverflow: 'ellipsis',
+                whiteSpace: 'nowrap',
+                maxWidth: 0,
+              }}
+            >
               {PROVIDER_LABELS[provider] ?? provider}
             </TableCell>
           </TableRow>
           <TableRow>
             <TableCell sx={{ color: 'text.secondary', fontSize: 11 }}>模型</TableCell>
-            <TableCell sx={{ fontFamily: 'monospace', fontWeight: 600, fontSize: 11, color: 'text.primary', textAlign: 'right', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap', maxWidth: 0 }}>
+            <TableCell
+              sx={{
+                fontFamily: 'monospace',
+                fontWeight: 600,
+                fontSize: 11,
+                color: 'text.primary',
+                textAlign: 'right',
+                overflow: 'hidden',
+                textOverflow: 'ellipsis',
+                whiteSpace: 'nowrap',
+                maxWidth: 0,
+              }}
+            >
               {model}
             </TableCell>
           </TableRow>
           <TableRow>
             <TableCell sx={{ color: 'text.secondary', fontSize: 11 }}>迭代</TableCell>
-            <TableCell sx={{ fontFamily: 'monospace', fontWeight: 600, fontSize: 11, color: 'text.secondary', textAlign: 'right' }}>
+            <TableCell
+              sx={{
+                fontFamily: 'monospace',
+                fontWeight: 600,
+                fontSize: 11,
+                color: 'text.secondary',
+                textAlign: 'right',
+              }}
+            >
               {currentIteration} / {maxIterations}
             </TableCell>
           </TableRow>
           {totalDuration > 0 && (
             <TableRow>
               <TableCell sx={{ color: 'text.secondary', fontSize: 11 }}>总耗时</TableCell>
-              <TableCell sx={{ fontFamily: 'monospace', fontWeight: 600, fontSize: 11, color: 'text.secondary', textAlign: 'right' }}>
+              <TableCell
+                sx={{
+                  fontFamily: 'monospace',
+                  fontWeight: 600,
+                  fontSize: 11,
+                  color: 'text.secondary',
+                  textAlign: 'right',
+                }}
+              >
                 {formatDuration(totalDuration)}
               </TableCell>
             </TableRow>
           )}
         </TableBody>
       </Table>
+
+      {/* v0.5.0: SubAgent 状态区 — delegate_task 委派的子任务生命周期 */}
+      {subAgents.length > 0 && (
+        <Box sx={{ mt: 2, pt: 2, borderTop: 1, borderColor: 'divider', flexShrink: 0 }}>
+          <Stack direction="row" spacing={1} sx={{ mb: 1.5, alignItems: 'center' }}>
+            <Bot size={14} style={{ color: '#a855f7' }} />
+            <Typography
+              variant="caption"
+              sx={{
+                fontWeight: 600,
+                textTransform: 'uppercase',
+                letterSpacing: 1,
+                color: 'text.secondary',
+              }}
+            >
+              SubAgent 任务
+            </Typography>
+            <Typography variant="caption" sx={{ ml: 'auto', color: 'text.disabled', fontSize: 10 }}>
+              {subAgents.length} 个
+            </Typography>
+          </Stack>
+          <Stack spacing={0.5} sx={{ maxHeight: 220, overflowY: 'auto' }}>
+            {subAgents.map((sub) => (
+              <Box
+                key={sub.taskId}
+                sx={{
+                  px: 1,
+                  py: 0.75,
+                  borderRadius: 1,
+                  bgcolor: 'background.default',
+                  border: '1px solid',
+                  borderColor: 'divider',
+                  borderLeft: `2px solid ${SUB_STATUS_COLORS[sub.status]}`,
+                }}
+              >
+                <Stack direction="row" spacing={0.5} sx={{ alignItems: 'center' }}>
+                  <Box
+                    sx={{
+                      width: 6,
+                      height: 6,
+                      borderRadius: '50%',
+                      flexShrink: 0,
+                      bgcolor: SUB_STATUS_COLORS[sub.status],
+                      animation: sub.status === 'running' ? 'pulse 1.5s infinite' : 'none',
+                    }}
+                  />
+                  <Typography
+                    variant="caption"
+                    sx={{
+                      flex: 1,
+                      minWidth: 0,
+                      fontSize: 11,
+                      color: 'text.primary',
+                      overflow: 'hidden',
+                      textOverflow: 'ellipsis',
+                      whiteSpace: 'nowrap',
+                    }}
+                    title={sub.description}
+                  >
+                    {sub.description || sub.taskId}
+                  </Typography>
+                  {sub.depth > 1 && (
+                    <Typography variant="caption" sx={{ fontSize: 9, color: 'text.disabled' }}>
+                      L{sub.depth}
+                    </Typography>
+                  )}
+                  <Chip
+                    label={SUB_STATUS_LABELS[sub.status]}
+                    size="small"
+                    sx={{
+                      height: 16,
+                      fontSize: 9,
+                      flexShrink: 0,
+                      bgcolor: SUB_STATUS_COLORS[sub.status] + '22',
+                      color: SUB_STATUS_COLORS[sub.status],
+                      '& .MuiChip-label': { px: 0.5 },
+                    }}
+                  />
+                </Stack>
+                {(sub.durationMs != null || sub.iterations != null) && (
+                  <Typography
+                    variant="caption"
+                    sx={{ display: 'block', fontSize: 9, color: 'text.disabled', mt: 0.25 }}
+                  >
+                    {sub.durationMs != null ? formatDuration(sub.durationMs) : ''}
+                    {sub.iterations != null ? ` · ${sub.iterations} 轮` : ''}
+                  </Typography>
+                )}
+                {sub.error && (
+                  <Typography
+                    variant="caption"
+                    sx={{
+                      display: 'block',
+                      fontSize: 9,
+                      color: 'error.main',
+                      mt: 0.25,
+                      wordBreak: 'break-word',
+                    }}
+                  >
+                    {sub.error}
+                  </Typography>
+                )}
+              </Box>
+            ))}
+          </Stack>
+        </Box>
+      )}
     </Box>
   );
 }

src/components/layout/Sidebar.tsx

@@ -5,9 +5,35 @@
  */
 
 import { useState, useEffect, useMemo } from 'react';
-import { Box, Typography, Button, IconButton, TextField, Collapse, List, ListItemButton, ListItemIcon, ListItemText, Badge, Divider, Dialog, DialogTitle, DialogContent, DialogActions } from '@mui/material';
+import {
+  Box,
+  Typography,
+  Button,
+  IconButton,
+  TextField,
+  Collapse,
+  List,
+  ListItemButton,
+  ListItemIcon,
+  ListItemText,
+  Badge,
+  Divider,
+  Dialog,
+  DialogTitle,
+  DialogContent,
+  DialogActions,
+} from '@mui/material';
 import Fuse from 'fuse.js';
-import { Plus, Search, MessageSquare, Pin, Wrench, ChevronDown, ChevronRight, Trash2 } from 'lucide-react';
+import {
+  Plus,
+  Search,
+  MessageSquare,
+  Pin,
+  Wrench,
+  ChevronDown,
+  ChevronRight,
+  Trash2,
+} from 'lucide-react';
 import { useSessionStore, type Session } from '@renderer/stores/session-store';
 import { useAgentStore } from '@renderer/stores/agent-store';
 import { formatRelativeTime } from '@renderer/lib/formatters';
@@ -21,34 +47,125 @@ export function Sidebar(): React.JSX.Element {
   const searchQuery = useSessionStore((s) => s.searchQuery);
   const setSearchQuery = useSessionStore((s) => s.setSearchQuery);
   const agentStatus = useAgentStore((s) => s.agentStatus);
+  // v0.5.0: 内容搜索结果（FTS5），按会话聚合 { sessionId → snippet }
+  const [contentMatches, setContentMatches] = useState<
+    Map<string, { snippet: string; matchCount: number }>
+  >(new Map());
 
   useEffect(() => {
     // M-27 修复: 添加 cancelled 标志防止组件卸载后 setState
     let cancelled = false;
     if (window.metona?.sessions?.list) {
-      window.metona.sessions.list().then((list) => {
-        if (cancelled) return;
-        useSessionStore.getState().setSessions((list as Array<{ id: string; title: string; createdAt: number; updatedAt: number; messageCount: number; pinned: boolean; archived: boolean }>).map((s) => ({ id: s.id, title: s.title, createdAt: s.createdAt, updatedAt: s.updatedAt, messageCount: s.messageCount, pinned: s.pinned, archived: s.archived })));
-      }).catch((err) => {
-        // M-11 修复: 记录错误而非静默吞掉，便于诊断
-        console.error('[Sidebar] Failed to load sessions:', err);
-      });
+      window.metona.sessions
+        .list()
+        .then((list) => {
+          if (cancelled) return;
+          useSessionStore
+            .getState()
+            .setSessions(
+              (
+                list as Array<{
+                  id: string;
+                  title: string;
+                  createdAt: number;
+                  updatedAt: number;
+                  messageCount: number;
+                  pinned: boolean;
+                  archived: boolean;
+                }>
+              ).map((s) => ({
+                id: s.id,
+                title: s.title,
+                createdAt: s.createdAt,
+                updatedAt: s.updatedAt,
+                messageCount: s.messageCount,
+                pinned: s.pinned,
+                archived: s.archived,
+              })),
+            );
+        })
+        .catch((err) => {
+          // M-11 修复: 记录错误而非静默吞掉，便于诊断
+          console.error('[Sidebar] Failed to load sessions:', err);
+        });
     }
-    return () => { cancelled = true; };
+    return () => {
+      cancelled = true;
+    };
   }, []);
 
+  // v0.5.0: 搜索词变化时防抖查询会话内容（FTS5 全文搜索，300ms 防抖减少 IPC 频率）
+  useEffect(() => {
+    const q = searchQuery.trim();
+    if (!q || !window.metona?.sessions?.searchContent) {
+      setContentMatches(new Map());
+      return;
+    }
+    const timer = window.setTimeout(async () => {
+      try {
+        const r = await window.metona.sessions.searchContent(q);
+        if (r.success && r.data) {
+          const map = new Map<string, { snippet: string; matchCount: number }>();
+          for (const item of r.data) {
+            map.set(item.sessionId, { snippet: item.snippet, matchCount: item.matchCount });
+          }
+          setContentMatches(map);
+        } else {
+          setContentMatches(new Map());
+        }
+      } catch (err) {
+        console.error('[Sidebar] Content search failed:', err);
+        setContentMatches(new Map());
+      }
+    }, 300);
+    return () => window.clearTimeout(timer);
+  }, [searchQuery]);
+
   // L-13 修复: 使用 useMemo 缓存 filteredSessions，避免每次渲染都重建 Fuse 索引
+  // v0.5.0: 标题匹配（Fuse 模糊）∪ 内容匹配（FTS5 精确短语），标题匹配优先排序
   const filteredSessions = useMemo(() => {
-    let list = sessions.filter((s) => !s.archived);
-    if (searchQuery) { const fuse = new Fuse(list, { keys: ['title'], threshold: 0.4, ignoreLocation: true }); list = fuse.search(searchQuery).map((r) => r.item); }
-    return list.sort((a, b) => a.pinned === b.pinned ? b.updatedAt - a.updatedAt : a.pinned ? -1 : 1);
-  }, [sessions, searchQuery]);
+    const list = sessions.filter((s) => !s.archived);
+    if (searchQuery) {
+      const fuse = new Fuse(list, { keys: ['title'], threshold: 0.4, ignoreLocation: true });
+      const titleMatched = new Set(fuse.search(searchQuery).map((r) => r.item.id));
+      // 内容匹配的会话并入结果（已含标题匹配的不重复）
+      const merged = list.filter((s) => titleMatched.has(s.id) || contentMatches.has(s.id));
+      // 标题匹配优先，内容匹配其次（各按置顶/更新时间排序）
+      return merged.sort((a, b) => {
+        const aTitle = titleMatched.has(a.id) ? 0 : 1;
+        const bTitle = titleMatched.has(b.id) ? 0 : 1;
+        if (aTitle !== bTitle) return aTitle - bTitle;
+        return a.pinned === b.pinned ? b.updatedAt - a.updatedAt : a.pinned ? -1 : 1;
+      });
+    }
+    return list.sort((a, b) =>
+      a.pinned === b.pinned ? b.updatedAt - a.updatedAt : a.pinned ? -1 : 1,
+    );
+  }, [sessions, searchQuery, contentMatches]);
 
   const handleNewSession = async () => {
     if (window.metona?.sessions?.create) {
       try {
-        const r = await window.metona.sessions.create() as { id: string; title: string; createdAt: number; updatedAt: number; messageCount: number; pinned: boolean; archived: boolean };
-        useSessionStore.getState().addSession({ id: r.id, title: r.title, createdAt: r.createdAt, updatedAt: r.updatedAt, messageCount: r.messageCount, pinned: r.pinned, archived: r.archived });
+        const r = (await window.metona.sessions.create()) as {
+          id: string;
+          title: string;
+          createdAt: number;
+          updatedAt: number;
+          messageCount: number;
+          pinned: boolean;
+          archived: boolean;
+        };
+        useSessionStore
+          .getState()
+          .addSession({
+            id: r.id,
+            title: r.title,
+            createdAt: r.createdAt,
+            updatedAt: r.updatedAt,
+            messageCount: r.messageCount,
+            pinned: r.pinned,
+            archived: r.archived,
+          });
         setCurrentSession(r.id);
         loadSessionMessages(r.id);
         return;
@@ -56,22 +173,50 @@ export function Sidebar(): React.JSX.Element {
         // M-9 修复: 显示错误提示而非静默吞错后创建本地假会话
         // 之前的行为：catch 后继续创建本地 s_${Date.now()} 会话，但该会话在主进程不存在，下次刷新消失
         console.error('[Sidebar] Failed to create session:', err);
-        import('@metona-team/metona-toast').then((mod) => {
-          mod.default.error('创建会话失败，请检查数据库状态');
-        }).catch(() => {});
-        return;  // 不创建本地假会话
+        import('@metona-team/metona-toast')
+          .then((mod) => {
+            mod.default.error('创建会话失败，请检查数据库状态');
+          })
+          .catch(() => {});
+        return; // 不创建本地假会话
       }
     }
-    const newSession: Session = { id: `s_${Date.now()}`, title: '新会话', createdAt: Date.now(), updatedAt: Date.now(), messageCount: 0, pinned: false, archived: false };
+    const newSession: Session = {
+      id: `s_${Date.now()}`,
+      title: '新会话',
+      createdAt: Date.now(),
+      updatedAt: Date.now(),
+      messageCount: 0,
+      pinned: false,
+      archived: false,
+    };
     useSessionStore.getState().addSession(newSession);
     setCurrentSession(newSession.id);
     loadSessionMessages(newSession.id);
   };
 
   return (
-    <Box component="aside" sx={{ flexShrink: 0, display: 'flex', flexDirection: 'column', overflow: 'hidden', bgcolor: 'background.paper', borderRight: 1, borderColor: 'divider', width: LAYOUT.SIDEBAR_WIDTH }}>
+    <Box
+      component="aside"
+      sx={{
+        flexShrink: 0,
+        display: 'flex',
+        flexDirection: 'column',
+        overflow: 'hidden',
+        bgcolor: 'background.paper',
+        borderRight: 1,
+        borderColor: 'divider',
+        width: LAYOUT.SIDEBAR_WIDTH,
+      }}
+    >
       <Box sx={{ p: 1.5, flex: 1, display: 'flex', flexDirection: 'column', overflow: 'hidden' }}>
-        <Button variant="outlined" fullWidth size="small" onClick={handleNewSession} sx={{ mb: 1.5, fontSize: 12 }}>
+        <Button
+          variant="outlined"
+          fullWidth
+          size="small"
+          onClick={handleNewSession}
+          sx={{ mb: 1.5, fontSize: 12 }}
+        >
           <Plus size={14} style={{ marginRight: 8 }} /> 新建会话
         </Button>
 
@@ -79,21 +224,44 @@ export function Sidebar(): React.JSX.Element {
           size="small"
           value={searchQuery}
           onChange={(e) => setSearchQuery(e.target.value)}
-          placeholder="搜索会话..."
+          placeholder="搜索会话标题与内容..."
           slotProps={{
             input: {
               startAdornment: <Search size={14} style={{ color: '#8b8fa7', marginRight: 8 }} />,
             },
           }}
-          sx={{ mb: 1.5, '& .MuiOutlinedInput-root': { fontSize: 12, borderRadius: 1.5, height: 34 } }}
+          sx={{
+            mb: 1.5,
+            '& .MuiOutlinedInput-root': { fontSize: 12, borderRadius: 1.5, height: 34 },
+          }}
         />
 
         <Box sx={{ flex: 1, overflowY: 'auto' }}>
           {filteredSessions.length === 0 ? (
-            <Typography variant="caption" sx={{ textAlign: 'center', py: 4, display: 'block', color: 'text.secondary' }}>{searchQuery ? '无匹配结果' : '暂无会话'}</Typography>
-          ) : filteredSessions.map((session) => (
-            <SessionItem key={session.id} session={session} isActive={session.id === currentSessionId} isAgentActive={session.id === currentSessionId && (agentStatus === 'thinking' || agentStatus === 'executing')} onClick={() => { setCurrentSession(session.id); loadSessionMessages(session.id); }} />
-          ))}
+            <Typography
+              variant="caption"
+              sx={{ textAlign: 'center', py: 4, display: 'block', color: 'text.secondary' }}
+            >
+              {searchQuery ? '无匹配结果' : '暂无会话'}
+            </Typography>
+          ) : (
+            filteredSessions.map((session) => (
+              <SessionItem
+                key={session.id}
+                session={session}
+                isActive={session.id === currentSessionId}
+                isAgentActive={
+                  session.id === currentSessionId &&
+                  (agentStatus === 'thinking' || agentStatus === 'executing')
+                }
+                contentMatch={contentMatches.get(session.id)}
+                onClick={() => {
+                  setCurrentSession(session.id);
+                  loadSessionMessages(session.id);
+                }}
+              />
+            ))
+          )}
         </Box>
 
         <Divider sx={{ mt: 'auto', mb: 1 }} />
@@ -103,7 +271,19 @@ export function Sidebar(): React.JSX.Element {
   );
 }
 
-function SessionItem({ session, isActive, isAgentActive, onClick }: { session: Session; isActive: boolean; isAgentActive: boolean; onClick: () => void }) {
+function SessionItem({
+  session,
+  isActive,
+  isAgentActive,
+  contentMatch,
+  onClick,
+}: {
+  session: Session;
+  isActive: boolean;
+  isAgentActive: boolean;
+  contentMatch?: { snippet: string; matchCount: number };
+  onClick: () => void;
+}) {
   const [showDeleteDialog, setShowDeleteDialog] = useState(false);
 
   const handleDelete = (e: React.MouseEvent) => {
@@ -119,9 +299,11 @@ function SessionItem({ session, isActive, isAgentActive, onClick }: { session: S
         await window.metona.sessions.delete(session.id);
       } catch (err) {
         console.error('[Sidebar] Failed to delete session:', err);
-        import('@metona-team/metona-toast').then((mod) => {
-          mod.default.error('删除会话失败，请重试');
-        }).catch(() => {});
+        import('@metona-team/metona-toast')
+          .then((mod) => {
+            mod.default.error('删除会话失败，请重试');
+          })
+          .catch(() => {});
         // 不调用 removeSession，保留会话在 UI 中（与数据库状态一致）
         setShowDeleteDialog(false);
         return;
@@ -135,7 +317,13 @@ function SessionItem({ session, isActive, isAgentActive, onClick }: { session: S
         currentSessionId: null,
         messages: [],
         traceSteps: [],
-        tokenUsage: { inputTokens: 0, outputTokens: 0, totalTokens: 0, lastInputTokens: 0, lastCompressedSaved: 0 },
+        tokenUsage: {
+          inputTokens: 0,
+          outputTokens: 0,
+          totalTokens: 0,
+          lastInputTokens: 0,
+          lastCompressedSaved: 0,
+        },
         currentRunId: null,
         currentIteration: 0,
       });
@@ -145,24 +333,101 @@ function SessionItem({ session, isActive, isAgentActive, onClick }: { session: S
 
   return (
     <>
-      <ListItemButton onClick={onClick} selected={isActive} dense sx={{ borderRadius: 1.5, mb: 0.25, px: 1.5, py: 0.75, borderRight: isActive ? '2px solid' : '2px solid transparent', borderColor: isActive ? 'primary.main' : 'transparent', '&:hover .delete-btn': { opacity: 1 } }}>
+      <ListItemButton
+        onClick={onClick}
+        selected={isActive}
+        dense
+        sx={{
+          borderRadius: 1.5,
+          mb: 0.25,
+          px: 1.5,
+          py: 0.75,
+          borderRight: isActive ? '2px solid' : '2px solid transparent',
+          borderColor: isActive ? 'primary.main' : 'transparent',
+          '&:hover .delete-btn': { opacity: 1 },
+        }}
+      >
         <ListItemIcon sx={{ minWidth: 24 }}>
-          {session.pinned ? <Pin size={10} style={{ color: '#818cf8' }} /> : isAgentActive ? <Badge color="success" variant="dot" sx={{ '& .MuiBadge-dot': { animation: 'pulse 2s infinite', width: 8, height: 8 } }}><MessageSquare size={12} style={{ color: '#8b8fa7' }} /></Badge> : <MessageSquare size={12} style={{ color: '#8b8fa7' }} />}
+          {session.pinned ? (
+            <Pin size={10} style={{ color: '#818cf8' }} />
+          ) : isAgentActive ? (
+            <Badge
+              color="success"
+              variant="dot"
+              sx={{ '& .MuiBadge-dot': { animation: 'pulse 2s infinite', width: 8, height: 8 } }}
+            >
+              <MessageSquare size={12} style={{ color: '#8b8fa7' }} />
+            </Badge>
+          ) : (
+            <MessageSquare size={12} style={{ color: '#8b8fa7' }} />
+          )}
         </ListItemIcon>
-        <ListItemText primary={<Typography variant="body2" sx={{ fontSize: 12, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap', color: isActive ? 'text.primary' : 'text.secondary' }}>{session.title}</Typography>}
-          secondary={<Typography variant="caption" sx={{ fontSize: 10 }}>{formatRelativeTime(session.updatedAt)}{session.messageCount > 0 ? ` · ${session.messageCount} 条` : ''}</Typography>}
+        <ListItemText
+          primary={
+            <Typography
+              variant="body2"
+              sx={{
+                fontSize: 12,
+                overflow: 'hidden',
+                textOverflow: 'ellipsis',
+                whiteSpace: 'nowrap',
+                color: isActive ? 'text.primary' : 'text.secondary',
+              }}
+            >
+              {session.title}
+            </Typography>
+          }
+          secondary={
+            <>
+              <Typography variant="caption" sx={{ fontSize: 10 }}>
+                {formatRelativeTime(session.updatedAt)}
+                {session.messageCount > 0 ? ` · ${session.messageCount} 条` : ''}
+              </Typography>
+              {/* v0.5.0: 内容匹配摘要（FTS5 snippet，高亮标记为 [匹配]） */}
+              {contentMatch && (
+                <Typography
+                  variant="caption"
+                  sx={{
+                    display: 'block',
+                    fontSize: 10,
+                    color: 'text.disabled',
+                    mt: 0.25,
+                    overflow: 'hidden',
+                    textOverflow: 'ellipsis',
+                    whiteSpace: 'nowrap',
+                  }}
+                  title={contentMatch.snippet}
+                >
+                  {contentMatch.matchCount > 1 ? `(${contentMatch.matchCount} 处) ` : ''}
+                  {contentMatch.snippet}
+                </Typography>
+              )}
+            </>
+          }
         />
         <IconButton
           className="delete-btn"
           size="small"
           onClick={handleDelete}
-          sx={{ opacity: 0, transition: 'opacity 150ms', color: 'text.disabled', '&:hover': { color: 'error.main' }, width: 20, height: 20 }}
+          sx={{
+            opacity: 0,
+            transition: 'opacity 150ms',
+            color: 'text.disabled',
+            '&:hover': { color: 'error.main' },
+            width: 20,
+            height: 20,
+          }}
         >
           <Trash2 size={12} />
         </IconButton>
       </ListItemButton>
 
-      <Dialog open={showDeleteDialog} onClose={() => setShowDeleteDialog(false)} maxWidth="xs" fullWidth>
+      <Dialog
+        open={showDeleteDialog}
+        onClose={() => setShowDeleteDialog(false)}
+        maxWidth="xs"
+        fullWidth
+      >
         <DialogTitle sx={{ fontSize: 14 }}>删除会话</DialogTitle>
         <DialogContent>
           <Typography variant="body2" sx={{ color: 'text.secondary' }}>
@@ -170,8 +435,16 @@ function SessionItem({ session, isActive, isAgentActive, onClick }: { session: S
           </Typography>
         </DialogContent>
         <DialogActions>
-          <Button size="small" onClick={() => setShowDeleteDialog(false)} sx={{ color: 'text.secondary' }}>取消</Button>
-          <Button size="small" color="error" variant="contained" onClick={confirmDelete}>删除</Button>
+          <Button
+            size="small"
+            onClick={() => setShowDeleteDialog(false)}
+            sx={{ color: 'text.secondary' }}
+          >
+            取消
+          </Button>
+          <Button size="small" color="error" variant="contained" onClick={confirmDelete}>
+            删除
+          </Button>
         </DialogActions>
       </Dialog>
     </>
@@ -180,41 +453,129 @@ function SessionItem({ session, isActive, isAgentActive, onClick }: { session: S
 
 function ToolManagerPanel() {
   const [expanded, setExpanded] = useState(false);
-  const [tools, setTools] = useState<Array<{ name: string; description: string; category: string; riskLevel: string; requiresPermission: boolean; enabled: boolean }>>([]);
+  const [tools, setTools] = useState<
+    Array<{
+      name: string;
+      description: string;
+      category: string;
+      riskLevel: string;
+      requiresPermission: boolean;
+      enabled: boolean;
+    }>
+  >([]);
 
   useEffect(() => {
     // M-54 修复: 添加 cancelled 标志，防止组件卸载后 setState
     let cancelled = false;
     if (window.metona?.tools?.list) {
-      window.metona.tools.list().then((list) => {
-        if (!cancelled) setTools(list as MetonaToolInfo[]);
-      }).catch((err) => {
-        console.error('[Sidebar]', err);
-        if (!cancelled) {
-          import('@metona-team/metona-toast').then((mod) => mod.default.error('加载工具列表失败')).catch(() => {});
-        }
-      });
+      window.metona.tools
+        .list()
+        .then((list) => {
+          if (!cancelled) setTools(list as MetonaToolInfo[]);
+        })
+        .catch((err) => {
+          console.error('[Sidebar]', err);
+          if (!cancelled) {
+            import('@metona-team/metona-toast')
+              .then((mod) => mod.default.error('加载工具列表失败'))
+              .catch(() => {});
+          }
+        });
     }
-    return () => { cancelled = true; };
+    return () => {
+      cancelled = true;
+    };
   }, []);
 
   const readyCount = tools.filter((t) => t.enabled).length;
-  const riskColors: Record<string, string> = { safe: 'success.main', low: 'info.main', medium: 'warning.main', high: 'error.main' };
-  const riskLabels: Record<string, string> = { safe: 'SAFE', low: 'LOW', medium: 'MEDIUM', high: 'HIGH' };
+  const riskColors: Record<string, string> = {
+    safe: 'success.main',
+    low: 'info.main',
+    medium: 'warning.main',
+    high: 'error.main',
+  };
+  const riskLabels: Record<string, string> = {
+    safe: 'SAFE',
+    low: 'LOW',
+    medium: 'MEDIUM',
+    high: 'HIGH',
+  };
   return (
     <Box>
-      <ListItemButton onClick={() => setExpanded(!expanded)} dense sx={{ borderRadius: 1, px: 1.5, py: 0.75 }}>
-        <ListItemIcon sx={{ minWidth: 24 }}>{expanded ? <ChevronDown size={12} /> : <ChevronRight size={12} />}<Wrench size={12} style={{ marginLeft: 4 }} /></ListItemIcon>
-        <ListItemText primary={<Typography variant="body2" sx={{ fontSize: 12 }}>工具管理</Typography>} />
-        <Typography variant="caption" sx={{ color: readyCount > 0 ? 'success.main' : 'text.disabled', fontSize: 10 }}>{readyCount} 就绪</Typography>
+      <ListItemButton
+        onClick={() => setExpanded(!expanded)}
+        dense
+        sx={{ borderRadius: 1, px: 1.5, py: 0.75 }}
+      >
+        <ListItemIcon sx={{ minWidth: 24 }}>
+          {expanded ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+          <Wrench size={12} style={{ marginLeft: 4 }} />
+        </ListItemIcon>
+        <ListItemText
+          primary={
+            <Typography variant="body2" sx={{ fontSize: 12 }}>
+              工具管理
+            </Typography>
+          }
+        />
+        <Typography
+          variant="caption"
+          sx={{ color: readyCount > 0 ? 'success.main' : 'text.disabled', fontSize: 10 }}
+        >
+          {readyCount} 就绪
+        </Typography>
       </ListItemButton>
       <Collapse in={expanded}>
-        <List dense disablePadding sx={{ pl: 3, maxHeight: 200, overflowY: 'auto', pr: 0.5, '&::-webkit-scrollbar': { width: 6 }, '&::-webkit-scrollbar-track': { borderRadius: 3 }, '&::-webkit-scrollbar-thumb': { bgcolor: 'divider', borderRadius: 3, '&:hover': { bgcolor: 'action.hover' } } }}>
+        <List
+          dense
+          disablePadding
+          sx={{
+            pl: 3,
+            maxHeight: 200,
+            overflowY: 'auto',
+            pr: 0.5,
+            '&::-webkit-scrollbar': { width: 6 },
+            '&::-webkit-scrollbar-track': { borderRadius: 3 },
+            '&::-webkit-scrollbar-thumb': {
+              bgcolor: 'divider',
+              borderRadius: 3,
+              '&:hover': { bgcolor: 'action.hover' },
+            },
+          }}
+        >
           {tools.map((t) => (
             <ListItemButton key={t.name} dense sx={{ py: 0.25, px: 1, borderRadius: 1 }}>
-              <Box sx={{ width: 6, height: 6, borderRadius: '50%', bgcolor: t.enabled ? riskColors[t.riskLevel] ?? 'text.disabled' : 'text.disabled', mr: 1, flexShrink: 0 }} />
-              <Typography variant="caption" sx={{ flex: 1, fontSize: 11, color: t.enabled ? 'text.secondary' : 'text.disabled' }}>{t.name}</Typography>
-              <Typography variant="caption" sx={{ fontSize: 9, color: t.enabled ? (riskColors[t.riskLevel] ?? 'text.disabled') : 'text.disabled' }}>{riskLabels[t.riskLevel] ?? t.riskLevel}</Typography>
+              <Box
+                sx={{
+                  width: 6,
+                  height: 6,
+                  borderRadius: '50%',
+                  bgcolor: t.enabled
+                    ? (riskColors[t.riskLevel] ?? 'text.disabled')
+                    : 'text.disabled',
+                  mr: 1,
+                  flexShrink: 0,
+                }}
+              />
+              <Typography
+                variant="caption"
+                sx={{
+                  flex: 1,
+                  fontSize: 11,
+                  color: t.enabled ? 'text.secondary' : 'text.disabled',
+                }}
+              >
+                {t.name}
+              </Typography>
+              <Typography
+                variant="caption"
+                sx={{
+                  fontSize: 9,
+                  color: t.enabled ? (riskColors[t.riskLevel] ?? 'text.disabled') : 'text.disabled',
+                }}
+              >
+                {riskLabels[t.riskLevel] ?? t.riskLevel}
+              </Typography>
             </ListItemButton>
           ))}
         </List>