feat(engine): 添加MCP连接管理和工具集成功能

- 集成MCP连接管理器，支持MCP服务器连接
- 添加多种内置工具：ClarifyTool、CronTool、DelegateTool、ExecuteCodeTool、
  PatchFileTool、ProcessTool、SendMessageTool、SpawnTool、TerminalTool、
  TodoTool、WebFetchTool、WebSearchTool、WriteFileTool等
- 实现工具注册和装配功能
- 添加技能选择上下文参数
- 支持思考模式控制参数thinking_enabled

feat(coordinator): 重构任务执行计划器参数命名

- 将learning_candidate_enabled重命名为allow_candidate_generation
- 更新TeamGraphScheduler中的参数传递
- 修改LocalAgentRunner中的相关参数处理
- 更新README文档中的相应描述

refactor(context): 标准化工具调用参数格式

- 添加_json导入用于参数序列化
- 实现_provider_tool_calls方法标准化OpenAI兼容的工具调用载荷
- 修复工具调用中参数非字符串类型的序列化问题

refactor(session): 优化消息历史记录过滤逻辑

- 修改get_messages_as_conversation为基于运行状态过滤消息
- 排除未完成、失败或错误结束的运行记录
- 改进对话历史的可见性控制机制

fix(store): 修复FTS索引重建逻辑

- 添加异常处理防止FTS索引创建失败
- 实现_rebuild_fts_index方法重新构建全文搜索索引
- 优化索引触发器和表的维护流程

app-instance/frontend/app/(app)/mcp/page.tsx

@@ -116,6 +116,7 @@ export default function MCPPage() {
   const [form, setForm] = useState(createEmptyForm());
   const [authzStatus, setAuthzStatus] = useState<AuthzStatus | null>(null);
   const [selectedServerId, setSelectedServerId] = useState<string | null>(null);
+  const [toolTab, setToolTab] = useState<'local' | 'online'>('local');
 
   const load = useCallback(async (background = false) => {
     if (background) {
@@ -262,6 +263,7 @@ export default function MCPPage() {
   const showAuthzPreview = form.auth_mode === 'oauth_backend_token';
   const selectedServer = selectedServerId ? servers.find((server) => server.id === selectedServerId) || null : null;
   const selectedToolGroup = selectedServerId ? tools.find((group) => group.server_id === selectedServerId) || null : null;
+  const visibleServers = servers.filter((server) => (server.kind || (server.transport === 'stdio' ? 'local' : 'online')) === toolTab);
   let authzHint = t(
     '无需手动填写。Audience 会按 MCP ID 自动生成，Scopes 按 AuthZ 当前权限动态决定。',
     'No manual input is required. The audience is generated from the MCP ID and scopes follow current AuthZ permissions.'
@@ -305,10 +307,10 @@ export default function MCPPage() {
         <div>
           <h1 className="text-2xl font-bold flex items-center gap-2">
             <ServerCog className="w-6 h-6" />
-            {t('MCP 服务', 'MCP servers')}
+            {t('工具', 'Tools')}
           </h1>
           <p className="text-sm text-muted-foreground mt-1">
-            {t('管理 MCP 服务配置、连通性和当前已发现的工具。', 'Manage MCP server configuration, connectivity, and discovered tools.')}
+            {t('本地工具和在线工具都通过 MCP Server 暴露；本地工具按类别由真实 stdio MCP 子进程承载。', 'Local and online tools are both exposed through MCP servers. Local tool categories run as real stdio MCP subprocesses.')}
           </p>
         </div>
         <div className="flex items-center gap-2">
@@ -323,7 +325,7 @@ export default function MCPPage() {
             <DialogTrigger asChild>
               <Button size="sm">
                 <Plus className="w-4 h-4 mr-2" />
-                {t('新增 MCP', 'Add MCP')}
+                {t('新增工具服务', 'Add tool server')}
               </Button>
             </DialogTrigger>
             <DialogContent className="sm:max-w-2xl">
@@ -484,9 +486,19 @@ export default function MCPPage() {
         </Card>
       )}
 
+      <Tabs value={toolTab} onValueChange={(value) => {
+        setToolTab(value as 'local' | 'online');
+        setSelectedServerId(null);
+      }} className="space-y-4">
+        <TabsList>
+          <TabsTrigger value="local">{t('本地工具', 'Local tools')}</TabsTrigger>
+          <TabsTrigger value="online">{t('在线工具', 'Online tools')}</TabsTrigger>
+        </TabsList>
+      </Tabs>
+
       <div className="grid grid-cols-1 xl:grid-cols-[minmax(0,1.3fr)_minmax(0,1fr)] gap-4">
         <div className="space-y-4">
-          {servers.map((server) => (
+          {visibleServers.map((server) => (
             <Card
               key={server.id}
               role="button"
@@ -511,6 +523,8 @@ export default function MCPPage() {
                   </div>
                   <div className="flex items-center gap-2 flex-wrap justify-end">
                     <Badge variant="outline">{transportLabel(server.transport, locale)}</Badge>
+                    <Badge variant="secondary">{server.category || (server.kind === 'local' ? 'local' : 'online')}</Badge>
+                    {server.managed && <Badge variant="outline">{t('内置', 'Built-in')}</Badge>}
                     <Badge variant={server.status === 'connected' ? 'default' : server.status === 'error' ? 'destructive' : 'secondary'}>
                       {serverStatusLabel(server.status, locale)}
                     </Badge>
@@ -534,12 +548,14 @@ export default function MCPPage() {
                   {server.last_error && <span className="text-rose-300">{server.last_error}</span>}
                 </div>
                 <div className="flex items-center gap-2 justify-end">
-                  <Button variant="outline" size="sm" onClick={(event) => {
-                    event.stopPropagation();
-                    openEdit(server);
-                  }}>
-                    {t('编辑', 'Edit')}
-                  </Button>
+                  {!server.managed && (
+                    <Button variant="outline" size="sm" onClick={(event) => {
+                      event.stopPropagation();
+                      openEdit(server);
+                    }}>
+                      {t('编辑', 'Edit')}
+                    </Button>
+                  )}
                   <Button variant="outline" size="sm" onClick={(event) => {
                     event.stopPropagation();
                     void handleTest(server.id);
@@ -547,21 +563,23 @@ export default function MCPPage() {
                     {testingId === server.id ? <Loader2 className="w-4 h-4 animate-spin mr-2" /> : <TestTube2 className="w-4 h-4 mr-2" />}
                     {t('测试', 'Test')}
                   </Button>
-                  <Button variant="outline" size="sm" onClick={(event) => {
-                    event.stopPropagation();
-                    void handleDelete(server.id);
-                  }}>
-                    <Trash2 className="w-4 h-4 mr-2" />
-                    {t('删除', 'Delete')}
-                  </Button>
+                  {!server.managed && (
+                    <Button variant="outline" size="sm" onClick={(event) => {
+                      event.stopPropagation();
+                      void handleDelete(server.id);
+                    }}>
+                      <Trash2 className="w-4 h-4 mr-2" />
+                      {t('删除', 'Delete')}
+                    </Button>
+                  )}
                 </div>
               </CardContent>
             </Card>
           ))}
-          {servers.length === 0 && (
+          {visibleServers.length === 0 && (
             <Card>
               <CardContent className="py-12 text-center text-muted-foreground">
-                {t('暂无 MCP 服务。', 'There are no MCP servers yet.')}
+                {toolTab === 'local' ? t('暂无本地工具服务。', 'There are no local tool servers yet.') : t('暂无在线工具服务。', 'There are no online tool servers yet.')}
               </CardContent>
             </Card>
           )}
@@ -571,7 +589,7 @@ export default function MCPPage() {
           <CardHeader>
             <CardTitle className="text-base flex items-center gap-2">
               <Wrench className="w-4 h-4" />
-              {selectedServer ? t(`${selectedServer.name} 的工具`, `${selectedServer.name} tools`) : t('MCP 工具', 'MCP tools')}
+              {selectedServer ? t(`${selectedServer.name} 的工具`, `${selectedServer.name} tools`) : t('工具详情', 'Tool details')}
             </CardTitle>
           </CardHeader>
           <CardContent className="space-y-4">