Revert "feat: use middleware to auth"

This reverts commit f57cdb5ec1.

src/app/login/page.tsx

@@ -27,6 +27,11 @@ function LoginPageClient() {
       });
 
       if (res.ok) {
+        // 保存密码以供后续请求使用
+        if (typeof window !== 'undefined') {
+          localStorage.setItem('password', password);
+        }
+
         const redirect = searchParams.get('redirect') || '/';
         router.replace(redirect);
       } else if (res.status === 401) {