i8n과 광고 수정

lib/controllers/add_subscription_controller.dart

@@ -525,7 +525,7 @@ class AddSubscriptionController {
           if (context.mounted) {
             AppSnackBar.showInfo(
               context: context,
-              message: '다음 결제 예정일로 저장됨',
+              message: AppLocalizations.of(context).nextBillingDateAdjusted,
             );
           }
         }

lib/controllers/detail_screen_controller.dart

@@ -454,7 +454,7 @@ class DetailScreenController extends ChangeNotifier {
     if (adjustedNext.isAfter(originalDateOnly)) {
       AppSnackBar.showInfo(
         context: context,
-        message: '다음 결제 예정일로 저장됨',
+        message: AppLocalizations.of(context).nextBillingDateAdjusted,
       );
     }
 

lib/controllers/sms_scan_controller.dart

@@ -14,6 +14,8 @@ import '../providers/navigation_provider.dart';
 import '../providers/category_provider.dart';
 import '../l10n/app_localizations.dart';
 import '../providers/payment_card_provider.dart';
+import 'package:google_mobile_ads/google_mobile_ads.dart';
+import 'dart:io' show Platform;
 
 class SmsScanController extends ChangeNotifier {
   // 상태 관리
@@ -47,6 +49,8 @@ class SmsScanController extends ChangeNotifier {
   final SubscriptionFilter _filter = SubscriptionFilter();
   bool _forceServiceNameEditing = false;
   bool get isServiceNameEditable => _forceServiceNameEditing;
+  bool _isAdInProgress = false;
+  bool get isAdInProgress => _isAdInProgress;
 
   @override
   void dispose() {
@@ -73,15 +77,79 @@ class SmsScanController extends ChangeNotifier {
     serviceNameController.text = '';
   }
 
-  void updateCurrentServiceName(String value) {
+  void updateCurrentServiceName(BuildContext context, String value) {
     if (_currentIndex >= _scannedSubscriptions.length) return;
     final trimmed = value.trim();
+    final unknownLabel = _unknownServiceLabel(context);
     final updated = _scannedSubscriptions[_currentIndex]
-        .copyWith(serviceName: trimmed.isEmpty ? '알 수 없는 서비스' : trimmed);
+        .copyWith(serviceName: trimmed.isEmpty ? unknownLabel : trimmed);
     _scannedSubscriptions[_currentIndex] = updated;
     notifyListeners();
   }
 
+  Future<void> startScan(BuildContext context) async {
+    if (_isLoading) return;
+    _isAdInProgress = true;
+    notifyListeners();
+    // 웹/비지원 플랫폼은 바로 스캔
+    if (kIsWeb || !(Platform.isAndroid || Platform.isIOS)) {
+      _isAdInProgress = false;
+      notifyListeners();
+      await scanSms(context);
+      return;
+    }
+
+    // 전면 광고 로드 및 노출 후 스캔 진행
+    try {
+      await InterstitialAd.load(
+        adUnitId: _interstitialAdUnitId(),
+        request: const AdRequest(),
+        adLoadCallback: InterstitialAdLoadCallback(
+          onAdLoaded: (ad) {
+            ad.fullScreenContentCallback = FullScreenContentCallback(
+              onAdDismissedFullScreenContent: (ad) {
+                ad.dispose();
+                _startSmsScanIfMounted(context);
+              },
+              onAdFailedToShowFullScreenContent: (ad, error) {
+                ad.dispose();
+                _fallbackAfterDelay(context);
+              },
+            );
+            ad.show();
+          },
+          onAdFailedToLoad: (error) {
+            _fallbackAfterDelay(context);
+          },
+        ),
+      );
+    } catch (e) {
+      Log.e('전면 광고 로드 중 오류, 바로 스캔 진행', e);
+      if (!context.mounted) return;
+      _fallbackAfterDelay(context);
+    }
+  }
+
+  String _interstitialAdUnitId() {
+    if (Platform.isAndroid || Platform.isIOS) {
+      return 'ca-app-pub-6691216385521068~6638409932';
+    }
+    return '';
+  }
+
+  Future<void> _startSmsScanIfMounted(BuildContext context) async {
+    if (!context.mounted) return;
+    _isAdInProgress = false;
+    notifyListeners();
+    await scanSms(context);
+  }
+
+  Future<void> _fallbackAfterDelay(BuildContext context) async {
+    await Future.delayed(const Duration(seconds: 5));
+    if (!context.mounted) return;
+    await _startSmsScanIfMounted(context);
+  }
+
   Future<void> scanSms(BuildContext context) async {
     _isLoading = true;
     _errorMessage = null;
@@ -366,8 +434,10 @@ class SmsScanController extends ChangeNotifier {
     }
 
     final current = _scannedSubscriptions[_currentIndex];
-    _forceServiceNameEditing = _shouldEnableServiceNameEditing(current);
-    if (_forceServiceNameEditing && current.serviceName == '알 수 없는 서비스') {
+    final unknownLabel = _unknownServiceLabel(context);
+    _forceServiceNameEditing =
+        _shouldEnableServiceNameEditing(current, unknownLabel);
+    if (_forceServiceNameEditing && current.serviceName == unknownLabel) {
       serviceNameController.clear();
     } else {
       serviceNameController.text = current.serviceName;
@@ -429,8 +499,13 @@ class SmsScanController extends ChangeNotifier {
     return null;
   }
 
-  bool _shouldEnableServiceNameEditing(Subscription subscription) {
+  bool _shouldEnableServiceNameEditing(
+      Subscription subscription, String unknownLabel) {
     final name = subscription.serviceName.trim();
-    return name.isEmpty || name == '알 수 없는 서비스';
+    return name.isEmpty || name == unknownLabel;
+  }
+
+  String _unknownServiceLabel(BuildContext context) {
+    return AppLocalizations.of(context).unknownService;
   }
 }