userfront gateway 분리.

userfront/lib/features/auth/presentation/login_screen.dart

@@ -48,6 +48,12 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
   bool _verificationOnly = false;
   bool _verificationApproved = false;
   String _verificationMessage = '';
+  String _verificationTitle = '승인 완료';
+  String _verificationPageTitle = '로그인 승인';
+  String _verificationActionLabel = '확인';
+  String _verificationActionPath = '/';
+  Timer? _verificationRedirectTimer;
+  bool _noticeHandled = false;
   bool _drySendEnabled = false;
 
   @override
@@ -69,6 +75,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
       final hasVerificationToken = widget.verificationToken != null || hasTokenParam;
       final hasLoginCode = loginIdParam != null && codeParam != null;
       _verificationOnly = hasVerificationToken || hasLoginCode || hasShortCodePath;
+      final notice = uri.queryParameters['notice'];
 
       if (hasShortCodePath) {
         final shortCode = uri.pathSegments[1];
@@ -80,6 +87,11 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
         _verifyToken(widget.verificationToken ?? uri.queryParameters['t']!);
       }
 
+      if (!_noticeHandled && notice == 'qr_login_required') {
+        _noticeHandled = true;
+        _showInfo('로그인 한 상태여야 QR 스캔으로 로그인 할 수 있습니다');
+      }
+
       if (!_verificationOnly) {
         _tryCookieSession();
       }
@@ -360,12 +372,31 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
     return AuthTokenStore.usesCookie();
   }
 
-  void _markVerificationApproved(String message) {
+  void _markVerificationApproved(
+    String message, {
+    String title = '승인 완료',
+    String pageTitle = '로그인 승인',
+    String actionLabel = '확인',
+    String actionPath = '/',
+    bool autoRedirect = false,
+    Duration redirectDelay = const Duration(seconds: 2),
+  }) {
     if (!mounted) return;
     setState(() {
       _verificationApproved = true;
       _verificationMessage = message;
+      _verificationTitle = title;
+      _verificationPageTitle = pageTitle;
+      _verificationActionLabel = actionLabel;
+      _verificationActionPath = actionPath;
     });
+    _verificationRedirectTimer?.cancel();
+    if (autoRedirect) {
+      _verificationRedirectTimer = Timer(redirectDelay, () {
+        if (!mounted) return;
+        context.go(actionPath);
+      });
+    }
   }
 
   Widget _buildVerificationResultView() {
@@ -377,9 +408,9 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
           children: [
             const Icon(Icons.check_circle_outline, color: Colors.green, size: 72),
             const SizedBox(height: 16),
-            const Text(
-              '승인 완료',
-              style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold, color: Colors.green),
+            Text(
+              _verificationTitle,
+              style: const TextStyle(fontSize: 22, fontWeight: FontWeight.bold, color: Colors.green),
             ),
             const SizedBox(height: 12),
             Text(
@@ -389,8 +420,8 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
             ),
             const SizedBox(height: 24),
             FilledButton(
-              onPressed: () => context.go('/'),
-              child: const Text('확인'),
+              onPressed: () => context.go(_verificationActionPath),
+              child: Text(_verificationActionLabel),
             ),
           ],
         ),
@@ -409,11 +440,20 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
       final hasLocalSession = _hasLocalSession();
 
       if (jwt is String && jwt.isNotEmpty) {
-        if (hasLocalSession) {
-          _markVerificationApproved("승인되었습니다. 이미 로그인된 브라우저입니다.");
+      if (hasLocalSession) {
+          _markVerificationApproved(
+            "승인 되었습니다. 이 기기는 로그인되어 있는 상태입니다. 원격 창도 로그인이 될 예정입니다",
+          );
           return;
         }
-        _completeLoginFromToken(jwt, provider: provider);
+        _markVerificationApproved(
+          "링크로 로그인 되었습니다. 잠시 후 로그인 화면으로 이동합니다.",
+          title: '링크 로그인 완료',
+          pageTitle: '링크 로그인',
+          actionLabel: '로그인 화면으로 이동',
+          actionPath: '/signin',
+          autoRedirect: true,
+        );
         return;
       }
 
@@ -451,7 +491,9 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
 
       if (jwt is String && jwt.isNotEmpty) {
         if (hasLocalSession) {
-          _markVerificationApproved("승인되었습니다. 이미 로그인된 브라우저입니다.");
+          _markVerificationApproved(
+            "승인 되었습니다. 이 기기는 로그인되어 있는 상태입니다. 원격 창도 로그인이 될 예정입니다",
+          );
           return;
         }
         _completeLoginFromToken(jwt, provider: res['provider'] as String?);
@@ -489,7 +531,9 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
 
       if (jwt is String && jwt.isNotEmpty) {
         if (hasLocalSession) {
-          _markVerificationApproved("승인되었습니다. 이미 로그인된 브라우저입니다.");
+          _markVerificationApproved(
+            "승인 되었습니다. 이 기기는 로그인되어 있는 상태입니다. 원격 창도 로그인이 될 예정입니다",
+          );
           return;
         }
         _completeLoginFromToken(jwt, provider: res['provider'] as String?);
@@ -510,6 +554,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
   @override
   void dispose() {
     _stopQrPolling();
+    _verificationRedirectTimer?.cancel();
     _tabController.dispose();
     _linkIdController.dispose();
     _passwordLoginIdController.dispose();
@@ -851,7 +896,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
     if (_verificationOnly && _verificationApproved) {
       return Scaffold(
         appBar: AppBar(
-          title: const Text('로그인 승인'),
+          title: Text(_verificationPageTitle),
           leading: IconButton(
             icon: const Icon(Icons.arrow_back),
             onPressed: () => context.go('/'),