所有模块添加路由守卫

src/pages/HomePage.tsx

@@ -24,14 +24,6 @@ export default function HomePage() {
   const [searchParams] = useSearchParams();
   const [userInfo, setUserInfo] = useState<SessionUserInfo | null>(() => getUserInfo());
 
-  // 登录守卫：未登录跳转 /login
-  useEffect(() => {
-    const token = sessionStorage.getItem('userToken');
-    if (!token) {
-      navigate('/login', { replace: true });
-    }
-  }, [navigate]);
-
   // 首页模块多时需纵向滚动；离开后恢复全局 overflow:hidden（其他模块自管布局）
   useEffect(() => {
     document.body.style.overflow = 'auto';

src/pages/LoginPage.tsx

@@ -1,5 +1,5 @@
 import { useState, useEffect } from 'react';
-import { useNavigate } from 'react-router-dom';
+import { useNavigate, useLocation } from 'react-router-dom';
 import { User, Lock, LogIn, AlertCircle, Loader2 } from 'lucide-react';
 import StarBackground from '@/shared/components/StarBackground';
 import { iamLogin, saveSession } from '@/shared/services/iamAuth';
@@ -28,6 +28,7 @@ const iconStyle = (isDark: boolean): React.CSSProperties => ({
 
 export default function LoginPage() {
   const navigate = useNavigate();
+  const location = useLocation();
   const { theme } = useTheme();
   const isDark = theme === 'dark';
 
@@ -52,7 +53,9 @@ export default function LoginPage() {
     try {
       const result = await iamLogin({ userId: userId.trim(), password });
       saveSession(result.token, result.userInfo);
-      navigate('/', { replace: true });
+      // 回跳原页面（RequireAuth 记录的 from），否则去首页
+      const from = (location.state as { from?: string })?.from ?? '/';
+      navigate(from, { replace: true });
     } catch (ex) {
       setError(ex instanceof Error ? ex.message : '登录失败，请稍后重试');
     } finally {