chore: 버전 1.0.8+10 업데이트

- hasBillingInMonth()에서 targetYear를 실제로 사용하도록 수정
- 연간 구독 수정 시 잘못된 월에 비용이 포함되던 문제 해결
- 연도+월을 포함한 개월 차이 계산으로 정확한 결제 발생 여부 판단

lib/controllers/sms_scan_controller.dart

@@ -17,15 +17,13 @@ import '../providers/category_provider.dart';
 import '../providers/payment_card_provider.dart';
 import '../l10n/app_localizations.dart';
 import '../utils/logger.dart';
+import '../widgets/common/snackbar/app_snackbar.dart';
 
 class SmsScanController extends ChangeNotifier {
   // 상태 관리
   bool _isLoading = false;
   bool get isLoading => _isLoading;
 
-  String? _errorMessage;
-  String? get errorMessage => _errorMessage;
-
   List<Subscription> _scannedSubscriptions = [];
   List<Subscription> get scannedSubscriptions => _scannedSubscriptions;
   PaymentCardSuggestion? _currentSuggestion;
@@ -109,7 +107,6 @@ class SmsScanController extends ChangeNotifier {
 
   Future<void> scanSms(BuildContext context) async {
     _isLoading = true;
-    _errorMessage = null;
     _scannedSubscriptions = [];
     _currentIndex = 0;
     notifyListeners();
@@ -137,9 +134,12 @@ class SmsScanController extends ChangeNotifier {
           final req = await permission.Permission.sms.request();
           if (!ctx.mounted) return;
           if (!req.isGranted) {
-            // 거부됨: 안내 후 종료
+            // 거부됨: 토스트 표시 후 종료
             if (!ctx.mounted) return;
-            _errorMessage = AppLocalizations.of(ctx).smsPermissionRequired;
+            AppSnackBar.showError(
+              context: ctx,
+              message: AppLocalizations.of(ctx).smsPermissionRequired,
+            );
             _isLoading = false;
             notifyListeners();
             return;
@@ -162,7 +162,10 @@ class SmsScanController extends ChangeNotifier {
 
       if (scanResults.isEmpty) {
         Log.i('스캔된 구독이 없음');
-        _errorMessage = AppLocalizations.of(context).subscriptionNotFound;
+        AppSnackBar.showError(
+          context: context,
+          message: AppLocalizations.of(context).subscriptionNotFound,
+        );
         _isLoading = false;
         notifyListeners();
         return;
@@ -184,7 +187,10 @@ class SmsScanController extends ChangeNotifier {
 
       if (repeatSubscriptions.isEmpty) {
         Log.i('반복 결제된 구독이 없음');
-        _errorMessage = AppLocalizations.of(context).repeatSubscriptionNotFound;
+        AppSnackBar.showError(
+          context: context,
+          message: AppLocalizations.of(context).repeatSubscriptionNotFound,
+        );
         _isLoading = false;
         notifyListeners();
         return;
@@ -223,8 +229,10 @@ class SmsScanController extends ChangeNotifier {
     } catch (e) {
       Log.e('SMS 스캔 중 오류 발생', e);
       if (context.mounted) {
-        _errorMessage =
-            AppLocalizations.of(context).smsScanErrorWithMessage(e.toString());
+        AppSnackBar.showError(
+          context: context,
+          message: AppLocalizations.of(context).smsScanErrorWithMessage(e.toString()),
+        );
         _isLoading = false;
         notifyListeners();
       }
@@ -343,7 +351,6 @@ class SmsScanController extends ChangeNotifier {
   void resetState() {
     _scannedSubscriptions = [];
     _currentIndex = 0;
-    _errorMessage = null;
     _selectedPaymentCardId = null;
     _currentSuggestion = null;
     _shouldSuggestCardCreation = false;

lib/screens/sms_scan_screen.dart

@@ -58,7 +58,6 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
     if (_controller.scannedSubscriptions.isEmpty) {
       return ScanInitialWidget(
         onScanPressed: () => _controller.startScan(context),
-        errorMessage: _controller.errorMessage,
       );
     }
 
@@ -77,7 +76,6 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
       });
       return ScanInitialWidget(
         onScanPressed: () => _controller.startScan(context),
-        errorMessage: _controller.errorMessage,
       );
     }
 

lib/utils/billing_cost_util.dart

@@ -214,20 +214,20 @@ class BillingCostUtil {
     // 결제 주기에 따른 개월 수
     final cycleMonths = _getCycleMonths(normalizedCycle);
 
-    // 결제 발생 월 계산 (nextBillingDate 기준으로 역산)
-    final billingMonth = nextBillingDate.month;
+    // 연도+월을 포함한 개월 차이 계산
+    // nextBillingDate와 target 월 사이의 차이가 cycleMonths의 배수인지 확인
+    final targetStart = DateTime(targetYear, targetMonth, 1);
+    final billingStart =
+        DateTime(nextBillingDate.year, nextBillingDate.month, 1);
 
-    // 대상 월이 결제 발생 월과 일치하는지 확인
-    // 예: 연간 결제(1월), targetMonth = 1 → true
-    // 예: 연간 결제(1월), targetMonth = 2 → false
-    for (int i = 0; i < 12; i += cycleMonths) {
-      final checkMonth = ((billingMonth - 1 + i) % 12) + 1;
-      if (checkMonth == targetMonth) {
-        return true;
-      }
-    }
+    final monthDiff = (billingStart.year - targetStart.year) * 12 +
+        (billingStart.month - targetStart.month);
 
-    return false;
+    // monthDiff가 cycleMonths의 배수이면 해당 월에 결제 발생
+    // 예: 연간 결제(2027-01), target=2026-01 → monthDiff=12, 12%12=0 → true (이전 결제)
+    // 예: 연간 결제(2027-01), target=2026-02 → monthDiff=11, 11%12≠0 → false
+    // 예: 연간 결제(2027-01), target=2027-01 → monthDiff=0, 0%12=0 → true
+    return monthDiff % cycleMonths == 0;
   }
 
   /// 결제 주기별 개월 수 반환

lib/widgets/home_content.dart

@@ -161,24 +161,14 @@ class _HomeContentState extends State<HomeContent> {
                     ).animate(CurvedAnimation(
                         parent: widget.slideController,
                         curve: Curves.easeOutCubic)),
-                    child: Row(
-                      children: [
-                        Text(
-                          AppLocalizations.of(context).subscriptionCount(
-                              subscriptionProvider.subscriptions.length),
-                          style: TextStyle(
-                            fontSize: 14,
-                            fontWeight: FontWeight.w600,
-                            color: Theme.of(context).colorScheme.primary,
-                          ),
-                        ),
-                        const SizedBox(width: 4),
-                        Icon(
-                          Icons.arrow_forward_ios,
-                          size: 14,
-                          color: Theme.of(context).colorScheme.primary,
-                        ),
-                      ],
+                    child: Text(
+                      AppLocalizations.of(context).subscriptionCount(
+                          subscriptionProvider.subscriptions.length),
+                      style: TextStyle(
+                        fontSize: 14,
+                        fontWeight: FontWeight.w600,
+                        color: Theme.of(context).colorScheme.primary,
+                      ),
                     ),
                   ),
                 ],

lib/widgets/sms_scan/scan_initial_widget.dart

@@ -7,12 +7,10 @@ import '../../l10n/app_localizations.dart';
 
 class ScanInitialWidget extends StatelessWidget {
   final VoidCallback onScanPressed;
-  final String? errorMessage;
 
   const ScanInitialWidget({
     super.key,
     required this.onScanPressed,
-    this.errorMessage,
   });
 
   @override
@@ -24,15 +22,6 @@ class ScanInitialWidget extends StatelessWidget {
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
-              if (errorMessage != null)
-                Padding(
-                  padding: const EdgeInsets.only(bottom: 24.0),
-                  child: ThemedText(
-                    errorMessage!,
-                    color: Theme.of(context).colorScheme.error,
-                    textAlign: TextAlign.center,
-                  ),
-                ),
               ThemedText(
                 AppLocalizations.of(context).findRepeatSubscriptions,
                 fontSize: 20,

pubspec.yaml

@@ -1,7 +1,7 @@
 name: submanager
 description: A new Flutter project.
 publish_to: 'none'
-version: 1.0.7+9
+version: 1.0.8+10
 
 environment:
   sdk: '>=3.0.0 <4.0.0'