feat: 个人微信改为前台每用户独立绑定(按 user_id 隔离)，后台仅保留全局 Bot

frontend/src/App.tsx

@@ -22,6 +22,7 @@ import NotificationPage from '@/pages/front/NotificationPage';
 import AssetsPage from '@/pages/front/AssetsPage';
 import NovelPreviewPage from '@/pages/front/NovelPreviewPage';
 import EvolutionDashboard from '@/pages/front/EvolutionDashboard';
+import WechatBot from '@/pages/front/WechatBot';
 
 // Admin Pages
 import AdminDashboard from '@/pages/admin/Dashboard';
@@ -117,6 +118,7 @@ const App: React.FC = () => {
           <Route path="assets" element={<AssetsPage />} />
           <Route path="assets/novel/:id" element={<NovelPreviewPage />} />
           <Route path="evolution" element={<EvolutionDashboard />} />
+          <Route path="wechat-bot" element={<WechatBot />} />
         </Route>
 
         {/* Admin Routes */}