chore: Flutter 코드 포맷팅 적용 및 미사용 코드(Dead Code) 정리

userfront/lib/features/dashboard/presentation/dashboard_screen.dart

@@ -1079,45 +1079,6 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     return tr('ui.userfront.dashboard.sessions.unknown_device');
   }
 
-  String _sessionPrimaryLabel(UserSessionSummary session) {
-    final appLabel = _sessionAppLabel(session);
-    if (appLabel.isNotEmpty) {
-      return appLabel;
-    }
-    if (session.isCurrent) {
-      return 'UserFront';
-    }
-    return tr('ui.userfront.dashboard.sessions.unknown_session');
-  }
-
-  String _sessionClientLabel(UserSessionSummary session) {
-    return '';
-  }
-
-  String _sessionAppLabel(UserSessionSummary session) {
-    final appName = session.appName.trim();
-    if (appName.isNotEmpty) {
-      return appName;
-    }
-    final clientId = session.clientId.trim().toLowerCase();
-    if (clientId.isEmpty) {
-      return session.isCurrent ? 'UserFront' : '';
-    }
-    if (clientId.contains('adminfront')) {
-      return 'AdminFront';
-    }
-    if (clientId.contains('devfront')) {
-      return 'DevFront';
-    }
-    if (clientId.contains('userfront')) {
-      return 'UserFront';
-    }
-    if (clientId.contains('baron')) {
-      return tr('ui.userfront.app_label.baron');
-    }
-    return session.clientId.trim();
-  }
-
   String _sessionUserAgentLabel(String userAgent) {
     final lower = userAgent.toLowerCase();
     if (lower.isEmpty) {
@@ -1173,29 +1134,6 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     return '';
   }
 
-  String _sessionOsLabel(String userAgent) {
-    final lower = userAgent.toLowerCase();
-    if (lower.isEmpty || _looksLikeInternalUserAgent(lower)) {
-      return '';
-    }
-    if (lower.contains('iphone') || lower.contains('ios')) {
-      return 'iOS';
-    }
-    if (lower.contains('android')) {
-      return 'Android';
-    }
-    if (lower.contains('windows')) {
-      return 'Windows';
-    }
-    if (lower.contains('mac os') || lower.contains('macintosh')) {
-      return 'macOS';
-    }
-    if (lower.contains('linux')) {
-      return 'Linux';
-    }
-    return '';
-  }
-
   bool _looksLikeInternalUserAgent(String userAgent) {
     return userAgent.startsWith('go-http-client/') ||
         userAgent.startsWith('fasthttp') ||