세션 IP 표시와 로그아웃 처리 보강

userfront/lib/features/profile/presentation/pages/profile_page.dart

@@ -6,6 +6,7 @@ import 'package:userfront/i18n.dart';
 import '../../../../core/notifiers/auth_notifier.dart';
 import '../../../../core/i18n/locale_utils.dart';
 import '../../../../core/services/auth_proxy_service.dart';
+import '../../../../core/services/logout_service.dart';
 import '../../../../core/services/auth_token_store.dart';
 import '../../../../core/ui/layout_breakpoints.dart';
 import '../../../../core/ui/toast_service.dart';
@@ -164,8 +165,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
   }
 
   Future<void> _logout() async {
-    AuthTokenStore.clear();
-    AuthNotifier.instance.notify();
+    await LogoutService().logout();
   }
 
   void _ensureControllers(UserProfile profile) {