feat: 优化前端导航和后端服务

- 更新侧边栏导航
- 优化 MCP 页面
- 调整 model service

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/components/Sidebar.vue

@@ -27,15 +27,11 @@ const mainMenu: MenuItem[] = [
 ]
 
 const bottomMenu: MenuItem[] = [
-  { name: 'API Keys', icon: 'fa-key', path: '/api-keys' },
   { name: 'Settings', icon: 'fa-gear', path: '/settings' },
   { name: 'Team', icon: 'fa-users', path: '/team' },
-  { name: 'Service Accounts', icon: 'fa-user-shield' },
-  { name: 'Integrations', icon: 'fa-plug' },
 ]
 
 const bottomMenu2: MenuItem[] = [
-  { name: 'Information', icon: 'fa-circle-info' },
   { name: 'Account', icon: 'fa-user' },
 ]
 
@@ -121,7 +117,7 @@ const handleUserCommand = (command: string) => {
         <!-- 分隔线 -->
         <li class="my-4 border-t border-dark-500"></li>
 
-        <!-- API Keys -->
+        <!-- Settings & Team -->
         <li v-for="item in bottomMenu" :key="item.name">
           <a
             href="#"