feat: 品牌更名、用户管理增强、画像版本管理、对话体验优化

- 品牌统一为"左右(BossAi)":网页标签、侧边栏、登录页、manifest、后端
- 用户管理:搜索、对话统计、重置密码、激活/停用账号
- 用户画像:确认事实步骤(带入内容+追问内容)、版本历史管理、PUT /profile/me
- 对话历史:按场景分组、保密模式标题处理
- AI助手页面:话题区可收起、模式选择紧凑化、footer免责声明
- 设置页:toggle宽度修复、工单文案改为专家咨询
- 去掉工单功能(前后端)

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web/src/App.tsx

@@ -10,6 +10,7 @@ import { KnowledgeBase } from '@/pages/KnowledgeBase'
 import { Experts } from '@/pages/Experts'
 import { WorkbenchPendingServices, WorkbenchPending, WorkbenchReplied, WorkbenchUsers } from '@/pages/workbench'
 import { ChatHistory } from '@/pages/ChatHistory'
+import { MyProfile } from '@/pages/MyProfile'
 import { AdminStats, AdminAiUsage, AdminExpertActivity, AdminUsers, AdminExperts } from '@/pages/admin'
 import { Placeholder } from '@/pages/Placeholder'
 import { Login } from '@/pages/Login'
@@ -43,6 +44,7 @@ export default function App() {
         <Route path="knowledge" element={<ProtectedRoute allowedRoles={['user']}><KnowledgeBase /></ProtectedRoute>} />
         <Route path="experts" element={<ProtectedRoute allowedRoles={['user']}><Experts /></ProtectedRoute>} />
         <Route path="history" element={<ProtectedRoute allowedRoles={['user']}><ChatHistory /></ProtectedRoute>} />
+        <Route path="profile" element={<ProtectedRoute allowedRoles={['user']}><MyProfile /></ProtectedRoute>} />
         <Route path="settings" element={<ProtectedRoute allowedRoles={['user']}><Settings /></ProtectedRoute>} />
         {/* 专家工作台:仅专家可访问,拆分为独立页面 */}
         <Route path="workbench" element={<ProtectedRoute allowedRoles={['expert']}><WorkbenchPendingServices /></ProtectedRoute>} />