i8n과 광고 수정

lib/providers/app_lock_provider.dart

@@ -6,6 +6,8 @@ import '../services/notification_service.dart';
 import '../providers/subscription_provider.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:flutter/foundation.dart' show kIsWeb;
+import '../l10n/app_localizations.dart';
+import '../navigator_key.dart';
 
 class AppLockProvider extends ChangeNotifier {
   final Box<bool> _appLockBox;
@@ -72,8 +74,11 @@ class AppLockProvider extends ChangeNotifier {
         return true;
       }
 
+      final ctx = navigatorKey.currentContext;
+      final loc = ctx != null ? AppLocalizations.of(ctx) : null;
       final authenticated = await _localAuth.authenticate(
-        localizedReason: '생체 인증을 사용하여 앱 잠금을 해제하세요.',
+        localizedReason:
+            loc?.unlockWithBiometric ?? 'Unlock with biometric authentication.',
         options: const AuthenticationOptions(
           stickyAuth: true,
           biometricOnly: true,