fix: 后台「访问前台」改为进入用户工作界面 /chat（而非营销落地页）

frontend/src/components/layout/AdminLayout.tsx

@@ -329,7 +329,7 @@ const AdminLayout: React.FC = () => {
 
   const handleVisitFrontend = () => {
 
-    const url = window.location.origin + '/home';
+    const url = window.location.origin + '/chat';
 
     window.open(url, '_blank');