tenant 제한 에러 처리 보안

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

@@ -17,6 +17,7 @@ import '../../../core/services/oidc_redirect_guard.dart';
 import '../../../core/notifiers/auth_notifier.dart';
 import '../domain/login_challenge_resolver.dart';
 import '../domain/cookie_session_policy.dart';
+import '../domain/consent_error_routing.dart';
 import '../domain/login_link_route_policy.dart';
 import '../domain/verification_completion_route.dart';
 import '../../profile/domain/notifiers/profile_notifier.dart';
@@ -1666,6 +1667,16 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
             return;
           } else {}
         } catch (e) {
+          if (e is AuthProxyException &&
+              shouldRouteTenantAccessErrorToErrorScreen(e)) {
+            final target = buildTenantAccessErrorPath(e, Uri.base);
+            if (mounted) {
+              context.go(target);
+            } else {
+              webWindow.redirectTo(target);
+            }
+            return;
+          }
           _showError(tr('msg.userfront.login.oidc_failed'));
           return;
         }