perf: 파싱/렌더 최적화 다수 적용

- SmsScanner 키워드/정규식 상수화로 반복 컴파일 제거\n- 리스트에 prototypeItem 추가, 카드 RepaintBoundary 적용\n- 차트 영역 RepaintBoundary로 페인트 분리\n- GlassmorphicScaffold 파티클 수를 disableAnimations에 따라 감소\n- 캐시 초기화 플래그를 --dart-define로 제어(CLEAR_CACHE_ON_STARTUP)

.claude/agents/codex.md

@@ -0,0 +1,13 @@
+# Project Agent Handoff
+
+Use AGENTS.md at repo root as the source of truth for coding rules and guardrails.
+
+Key Rules
+- Code first, concise rationale after. If uncertain, say "Uncertain:".
+- Keep diffs minimal; follow existing patterns and `analysis_options.yaml`.
+- Validate with `scripts/check.sh` (format/analyze/test) before completion.
+- Ask for approval before dependency changes, build config edits, or network access.
+
+Templates
+- Task and PR templates are in `AGENTS.md` and `doc/agents/codex_prompt_templates.md`.
+

.github/workflows/flutter_ci.yml

@@ -0,0 +1,31 @@
+name: Flutter CI
+
+on:
+  pull_request:
+  push:
+    branches: [ main, master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+
+      - name: Flutter Pub Get
+        run: flutter pub get
+
+      - name: Format check
+        run: dart format --output=none --set-exit-if-changed .
+
+      - name: Analyze
+        run: flutter analyze
+
+      - name: Test
+        run: flutter test
+

AGENTS.md

@@ -0,0 +1,69 @@
+Codex Agent Guide for SubManager
+
+Scope
+- Applies to the entire repository unless a more specific rule exists deeper in the tree.
+- Precedence: project AGENTS.md > project .claude/agents > user ~/.claude > default Codex CLI rules. Direct system/developer instructions always win.
+
+Goals
+- Accelerate small, safe changes with consistent quality.
+- Keep diffs minimal, focused, and aligned with Flutter best practices.
+
+Guardrails
+- Workspace only: modify files within this repo. Ask before adding dependencies or using network.
+- Safety: avoid destructive actions (file deletions, rewrites, config changes) unless explicitly requested.
+- Responses: be concise; code first, short rationale after. If uncertain, prefix with "Uncertain:". If multiple viable solutions, show the top 2 briefly.
+- Planning: for multi‑step tasks, maintain an update_plan with exactly one in_progress step.
+
+Coding Standards
+- Language: Dart/Flutter (SDK >= 3.0). Respect `analysis_options.yaml` (flutter_lints baseline).
+- Style/format: use `dart format .` and keep changes minimal. Avoid one‑letter variable names; avoid inline comments unless requested.
+- Structure: follow existing file/module patterns and naming. Do not introduce new frameworks or architectural shifts without approval.
+- Tests: add or update tests when behavior changes or bugs are fixed (if feasible). Keep tests scoped to the change.
+
+Validation
+- Always run local checks via `scripts/check.sh` before proposing completion:
+  - formatting check: `dart format --set-exit-if-changed .`
+  - static analysis: `flutter analyze`
+  - unit/widget tests: `flutter test` (ok if none exist)
+- UI changes: include brief description of visual impact; screenshots if readily available by the user.
+
+Sensitive Areas (require explicit approval)
+- Android/iOS/macOS build configs, signing, bundle identifiers, Gradle/Kotlin/Swift project settings.
+- Dependency graph changes (pubspec.yaml add/remove/upgrade).
+- Network access, calling external APIs, or adding secrets.
+
+Operational Conventions
+- Branch naming: `codex/<type>-<slug>` (e.g., `codex/fix-url-matcher`).
+- Commits: Conventional Commits preferred (e.g., `fix: correct url matching for X`).
+- PR description template:
+  - Summary: what/why
+  - Changes: key files and decisions
+  - Validation: how verified (analyze/tests/manual)
+  - Risk & Rollback: potential impact and quick rollback steps
+
+Task Template (author-provided)
+---
+Next: <what to do>
+Complexity: simple | medium | complex
+
+Context
+- Problem / goal:
+- Constraints / non‑goals:
+- Repro or commands:
+
+Done When
+- [ ] Behavior verified (`scripts/check.sh` passes)
+- [ ] Tests/docs updated if applicable
+---
+
+Commands
+- Lint/analyze/tests: `scripts/check.sh`
+- Auto‑format: `scripts/fix.sh`
+
+References & External Facts
+- Prefer official docs and code‑local references. If citing sources, include plain URLs or file paths in PR descriptions (avoid footnote citation syntaxes).
+
+Notes from ~/.claude (adapted)
+- Few‑shot examples improve accuracy; include small before/after or sample input→output when helpful.
+- Use structured thinking internally; present only concise, actionable outputs here.
+

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.READ_SMS" />
-    <uses-permission android:name="android.permission.RECEIVE_SMS" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <application
         android:label="구독 관리"
@@ -33,6 +32,10 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+        <!-- Google AdMob App ID -->
+        <meta-data
+            android:name="com.google.android.gms.ads.APPLICATION_ID"
+            android:value="ca-app-pub-6691216385521068~6638409932" />
     </application>
     <!-- Required to query activities that can process text, see:
          https://developer.android.com/training/package-visibility and

assets/data/text.json

@@ -217,6 +217,17 @@
     "enterAmount": "Enter amount",
     "invalidAmount": "Please enter a valid amount",
     "featureComingSoon": "This feature is coming soon"
+    ,
+    "smsPermissionTitle": "Request SMS Permission",
+    "smsPermissionReasonTitle": "Why",
+    "smsPermissionReasonBody": "We analyze payment-related SMS to auto-detect subscriptions. Processing happens locally only.",
+    "smsPermissionScopeTitle": "Scope",
+    "smsPermissionScopeBody": "We scan only payment-related SMS patterns (service/amount/date) locally; no data leaves your device.",
+    "permanentlyDeniedMessage": "Permission is permanently denied. Enable it in Settings.",
+    "openSettings": "Open Settings",
+    "later": "Later",
+    "requesting": "Requesting...",
+    "smsPermissionLabel": "SMS Permission"
   },
   "ko": {
     "appTitle": "디지털 월세 관리자",
@@ -436,6 +447,17 @@
     "enterAmount": "금액을 입력하세요",
     "invalidAmount": "올바른 금액을 입력해주세요",
     "featureComingSoon": "이 기능은 곧 출시됩니다"
+    ,
+    "smsPermissionTitle": "SMS 권한 요청",
+    "smsPermissionReasonTitle": "이유",
+    "smsPermissionReasonBody": "문자 메시지에서 반복 결제 내역을 분석해 구독 서비스를 자동으로 탐지합니다. 모든 처리는 기기 내에서만 이루어집니다.",
+    "smsPermissionScopeTitle": "수집 범위",
+    "smsPermissionScopeBody": "결제 관련 문자 메시지의 패턴(서비스명/금액/날짜)만 로컬에서 처리하며, 외부로 전송하지 않습니다.",
+    "permanentlyDeniedMessage": "권한이 영구적으로 거부되었습니다. 설정에서 권한을 허용해주세요.",
+    "openSettings": "설정 열기",
+    "later": "나중에 하기",
+    "requesting": "요청 중...",
+    "smsPermissionLabel": "SMS 권한"
   },
   "ja": {
     "appTitle": "デジタル月額管理者",

doc/agents/codex_prompt_templates.md

@@ -0,0 +1,70 @@
+Codex Prompt Templates
+
+Note
+- Keep prompts concise and specific. Include before/after or small input→output examples when helpful.
+- Use the Task Template in AGENTS.md for clarity and a crisp definition of Done.
+
+Next Task Format (from ~/.claude)
+---
+Next: <what to do>
+Complexity: simple | medium | complex
+---
+
+Bugfix Prompt
+---
+Context
+- Problem: <symptoms and scope>
+- Repro: <steps/command>
+- Observed: <actual result>
+- Expected: <desired result>
+- Constraints / Non‑goals: <limits>
+
+Done When
+- scripts/check.sh passes; behavior verified via repro
+- Tests/docs updated if applicable
+---
+
+Small Feature Prompt
+---
+Context
+- Goal: <user‑visible behavior>
+- Entry points: <screens/routes/widgets>
+- Data/State impact: <provider/models/side effects>
+- Constraints / Non‑goals: <limits>
+
+Done When
+- Feature is reachable and works
+- scripts/check.sh passes; minimal tests if feasible
+---
+
+Refactor Prompt (No Behavior Change)
+---
+Context
+- Target: <files/modules>
+- Motivation: <readability/duplication/perf>
+- Safety: <no logic change; add tests if risky>
+
+Done When
+- Same behavior; cleaner structure
+- scripts/check.sh passes
+---
+
+UI Change Prompt
+---
+Context
+- Screen/Widget: <where>
+- Visual Goal: <what changes>
+- Theming/Adaptivity: <light/dark/platform>
+
+Done When
+- Visual change implemented; screenshots added in PR by human
+- scripts/check.sh passes
+---
+
+Code Review Aid
+---
+- Summarize intent and key diffs
+- Verify formatting, analysis, and tests pass
+- Flag risks; suggest targeted follow‑ups
+---
+

ios/Runner/Info.plist

@@ -47,5 +47,8 @@
 	<true/>
 	<key>NSMessageUsageDescription</key>
 	<string>구독 결제 정보를 자동으로 추가하기 위해 SMS 접근이 필요합니다.</string>
+	<!-- Google AdMob App ID -->
+	<key>GADApplicationIdentifier</key>
+	<string>ca-app-pub-6691216385521068~6638409932</string>
 </dict>
 </plist>

lib/controllers/add_subscription_controller.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart' show kIsWeb, kDebugMode;
 import 'package:provider/provider.dart';
 import 'package:intl/intl.dart';
-import '../models/subscription_model.dart';
 import '../providers/subscription_provider.dart';
 import '../providers/category_provider.dart';
 import '../services/sms_service.dart';
@@ -158,12 +157,14 @@ class AddSubscriptionController {
         serviceNameController.text = serviceInfo.serviceName;
 
         // 카테고리 자동 선택
-        final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+        final categoryProvider =
+            Provider.of<CategoryProvider>(context, listen: false);
         final categories = categoryProvider.categories;
 
         // 카테고리 ID로 매칭
         final matchedCategory = categories.firstWhere(
-          (cat) => cat.name == serviceInfo.categoryNameKr || 
+          (cat) =>
+              cat.name == serviceInfo.categoryNameKr ||
               cat.name == serviceInfo.categoryNameEn,
           orElse: () => categories.first,
         );
@@ -174,12 +175,14 @@ class AddSubscriptionController {
         if (context.mounted) {
           AppSnackBar.showSuccess(
             context: context,
-            message: AppLocalizations.of(context).serviceRecognized(serviceInfo.serviceName),
+            message: AppLocalizations.of(context)
+                .serviceRecognized(serviceInfo.serviceName),
           );
         }
       }
     } catch (e) {
       if (kDebugMode) {
+        // ignore: avoid_print
         print('AddSubscriptionController: URL 자동 매칭 중 오류 - $e');
       }
     }
@@ -187,7 +190,8 @@ class AddSubscriptionController {
 
   /// 카테고리 자동 선택
   void autoSelectCategory() {
-    final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+    final categoryProvider =
+        Provider.of<CategoryProvider>(context, listen: false);
     final categories = categoryProvider.categories;
 
     final serviceName = serviceNameController.text.toLowerCase();
@@ -312,9 +316,11 @@ class AddSubscriptionController {
 
       if (smsContent.isNotEmpty) {
         try {
-          serviceInfo = await SubscriptionUrlMatcher.extractServiceFromSms(smsContent);
+          serviceInfo =
+              await SubscriptionUrlMatcher.extractServiceFromSms(smsContent);
         } catch (e) {
           if (kDebugMode) {
+            // ignore: avoid_print
             print('AddSubscriptionController: SMS 서비스 추출 실패 - $e');
           }
         }
@@ -327,11 +333,13 @@ class AddSubscriptionController {
           websiteUrlController.text = serviceInfo.serviceUrl ?? '';
 
           // 카테고리 자동 선택
-          final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+          final categoryProvider =
+              Provider.of<CategoryProvider>(context, listen: false);
           final categories = categoryProvider.categories;
 
           final matchedCategory = categories.firstWhere(
-            (cat) => cat.name == serviceInfo!.categoryNameKr || 
+            (cat) =>
+                cat.name == serviceInfo!.categoryNameKr ||
                 cat.name == serviceInfo.categoryNameEn,
             orElse: () => categories.first,
           );
@@ -396,7 +404,8 @@ class AddSubscriptionController {
       if (context.mounted) {
         AppSnackBar.showError(
           context: context,
-          message: AppLocalizations.of(context).smsScanErrorWithMessage(e.toString()),
+          message: AppLocalizations.of(context)
+              .smsScanErrorWithMessage(e.toString()),
         );
       }
     } finally {
@@ -421,9 +430,8 @@ class AddSubscriptionController {
         // 이벤트 가격 파싱
         double? eventPrice;
         if (isEventActive && eventPriceController.text.isNotEmpty) {
-          eventPrice = double.tryParse(
+          eventPrice =
-            eventPriceController.text.replaceAll(',', '')
+              double.tryParse(eventPriceController.text.replaceAll(',', ''));
-          );
         }
 
         await Provider.of<SubscriptionProvider>(context, listen: false)
@@ -452,7 +460,8 @@ class AddSubscriptionController {
         if (context.mounted) {
           AppSnackBar.showError(
             context: context,
-            message: AppLocalizations.of(context).saveErrorWithMessage(e.toString()),
+            message:
+                AppLocalizations.of(context).saveErrorWithMessage(e.toString()),
           );
         }
       }

lib/controllers/detail_screen_controller.dart

@@ -140,9 +140,12 @@ class DetailScreenController extends ChangeNotifier {
   /// 초기화
   void initialize({required TickerProvider vsync}) {
     // Text Controllers 초기화
-    serviceNameController = TextEditingController(text: subscription.serviceName);
+    serviceNameController =
-    monthlyCostController = TextEditingController(text: subscription.monthlyCost.toString());
+        TextEditingController(text: subscription.serviceName);
-    websiteUrlController = TextEditingController(text: subscription.websiteUrl ?? '');
+    monthlyCostController =
+        TextEditingController(text: subscription.monthlyCost.toString());
+    websiteUrlController =
+        TextEditingController(text: subscription.websiteUrl ?? '');
     eventPriceController = TextEditingController();
 
     // Form State 초기화
@@ -261,10 +264,12 @@ class DetailScreenController extends ChangeNotifier {
     if (_currency == 'KRW') {
       // 원화는 소수점 없이 표시
       final intValue = subscription.monthlyCost.toInt();
-      monthlyCostController.text = NumberFormat.decimalPattern().format(intValue);
+      monthlyCostController.text =
+          NumberFormat.decimalPattern().format(intValue);
     } else {
       // 달러는 소수점 2자리까지 표시
-      monthlyCostController.text = NumberFormat('#,##0.00').format(subscription.monthlyCost);
+      monthlyCostController.text =
+          NumberFormat('#,##0.00').format(subscription.monthlyCost);
     }
   }
 
@@ -275,7 +280,8 @@ class DetailScreenController extends ChangeNotifier {
 
   /// 카테고리 자동 선택
   void autoSelectCategory() {
-    final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+    final categoryProvider =
+        Provider.of<CategoryProvider>(context, listen: false);
     final categories = categoryProvider.categories;
 
     final serviceName = serviceNameController.text.toLowerCase();
@@ -377,7 +383,8 @@ class DetailScreenController extends ChangeNotifier {
     // 웹사이트 URL이 비어있는 경우 자동 매칭 다시 시도
     String? websiteUrl = websiteUrlController.text;
     if (websiteUrl.isEmpty) {
-      websiteUrl = SubscriptionUrlMatcher.suggestUrl(serviceNameController.text);
+      websiteUrl =
+          SubscriptionUrlMatcher.suggestUrl(serviceNameController.text);
     }
 
     // 구독 정보 업데이트
@@ -385,7 +392,8 @@ class DetailScreenController extends ChangeNotifier {
     // 콤마 제거하고 숫자만 추출
     double monthlyCost = 0.0;
     try {
-      monthlyCost = double.parse(monthlyCostController.text.replaceAll(',', ''));
+      monthlyCost =
+          double.parse(monthlyCostController.text.replaceAll(',', ''));
     } catch (e) {
       // 파싱 오류 발생 시 기본값 사용
       monthlyCost = subscription.monthlyCost;
@@ -393,7 +401,7 @@ class DetailScreenController extends ChangeNotifier {
 
     debugPrint('[DetailScreenController] 구독 업데이트 시작: '
         '${subscription.serviceName} → ${serviceNameController.text}, '
-        '금액: ${subscription.monthlyCost} → $monthlyCost ${_currency}');
+        '금액: $subscription.monthlyCost → $monthlyCost $_currency');
 
     subscription.serviceName = serviceNameController.text;
     subscription.monthlyCost = monthlyCost;
@@ -445,30 +453,35 @@ class DetailScreenController extends ChangeNotifier {
   Future<void> deleteSubscription() async {
     if (context.mounted) {
       // 로케일에 맞는 서비스명 가져오기
-      final localeProvider = Provider.of<LocaleProvider>(context, listen: false);
+      final localeProvider =
+          Provider.of<LocaleProvider>(context, listen: false);
       final locale = localeProvider.locale.languageCode;
       final displayName = await SubscriptionUrlMatcher.getServiceDisplayName(
         serviceName: subscription.serviceName,
         locale: locale,
       );
+      if (!context.mounted) return;
 
       // 삭제 확인 다이얼로그 표시
       final shouldDelete = await DeleteConfirmationDialog.show(
         context: context,
         serviceName: displayName,
       );
+      if (!context.mounted) return;
 
       if (!shouldDelete) return;
 
       // 사용자가 확인한 경우에만 삭제 진행
       if (context.mounted) {
-        final provider = Provider.of<SubscriptionProvider>(context, listen: false);
+        final provider =
+            Provider.of<SubscriptionProvider>(context, listen: false);
         await provider.deleteSubscription(subscription.id);
 
         if (context.mounted) {
           AppSnackBar.showError(
             context: context,
-            message: AppLocalizations.of(context).subscriptionDeleted(displayName),
+            message:
+                AppLocalizations.of(context).subscriptionDeleted(displayName),
             icon: Icons.delete_forever_rounded,
           );
           Navigator.of(context).pop();
@@ -484,7 +497,8 @@ class DetailScreenController extends ChangeNotifier {
       final locale = Localizations.localeOf(context).languageCode;
 
       // 2. 해지 안내 URL 찾기
-      String? cancellationUrl = await SubscriptionUrlMatcher.findCancellationUrl(
+      String? cancellationUrl =
+          await SubscriptionUrlMatcher.findCancellationUrl(
         serviceName: subscription.serviceName,
         websiteUrl: subscription.websiteUrl,
         locale: locale == 'ko' ? 'kr' : 'en',
@@ -492,8 +506,10 @@ class DetailScreenController extends ChangeNotifier {
 
       // 3. 해지 안내 URL이 없으면 구글 검색
       if (cancellationUrl == null) {
-        final searchQuery = '${subscription.serviceName} ${locale == 'ko' ? '해지 방법' : 'cancel subscription'}';
+        final searchQuery =
-        cancellationUrl = 'https://www.google.com/search?q=${Uri.encodeComponent(searchQuery)}';
+            '${subscription.serviceName} ${locale == 'ko' ? '해지 방법' : 'cancel subscription'}';
+        cancellationUrl =
+            'https://www.google.com/search?q=${Uri.encodeComponent(searchQuery)}';
 
         if (context.mounted) {
           AppSnackBar.showInfo(
@@ -515,6 +531,7 @@ class DetailScreenController extends ChangeNotifier {
       }
     } catch (e) {
       if (kDebugMode) {
+        // ignore: avoid_print
         print('DetailScreenController: 해지 페이지 열기 실패 - $e');
       }
 

lib/controllers/sms_scan_controller.dart

@@ -1,11 +1,11 @@
 import 'package:flutter/material.dart';
 import '../services/sms_scanner.dart';
 import '../models/subscription.dart';
-import '../models/subscription_model.dart';
 import '../services/sms_scan/subscription_converter.dart';
 import '../services/sms_scan/subscription_filter.dart';
 import '../providers/subscription_provider.dart';
 import 'package:provider/provider.dart';
+import '../utils/logger.dart';
 import '../providers/navigation_provider.dart';
 import '../providers/category_provider.dart';
 import '../l10n/app_localizations.dart';
@@ -58,18 +58,20 @@ class SmsScanController extends ChangeNotifier {
 
     try {
       // SMS 스캔 실행
-      print('SMS 스캔 시작');
+      Log.i('SMS 스캔 시작');
-      final scannedSubscriptionModels = await _smsScanner.scanForSubscriptions();
+      final scannedSubscriptionModels =
-      print('스캔된 구독: ${scannedSubscriptionModels.length}개');
+          await _smsScanner.scanForSubscriptions();
+      Log.d('스캔된 구독: ${scannedSubscriptionModels.length}개');
 
       if (scannedSubscriptionModels.isNotEmpty) {
-        print('첫 번째 구독: ${scannedSubscriptionModels[0].serviceName}, 반복 횟수: ${scannedSubscriptionModels[0].repeatCount}');
+        Log.d(
+            '첫 번째 구독: ${scannedSubscriptionModels[0].serviceName}, 반복 횟수: ${scannedSubscriptionModels[0].repeatCount}');
       }
 
       if (!context.mounted) return;
 
       if (scannedSubscriptionModels.isEmpty) {
-        print('스캔된 구독이 없음');
+        Log.i('스캔된 구독이 없음');
         _errorMessage = AppLocalizations.of(context).subscriptionNotFound;
         _isLoading = false;
         notifyListeners();
@@ -77,18 +79,21 @@ class SmsScanController extends ChangeNotifier {
       }
 
       // SubscriptionModel을 Subscription으로 변환
-      final scannedSubscriptions = _converter.convertModelsToSubscriptions(scannedSubscriptionModels);
+      final scannedSubscriptions =
+          _converter.convertModelsToSubscriptions(scannedSubscriptionModels);
 
       // 2회 이상 반복 결제된 구독만 필터링
-      final repeatSubscriptions = _filter.filterByRepeatCount(scannedSubscriptions, 2);
+      final repeatSubscriptions =
-      print('반복 결제된 구독: ${repeatSubscriptions.length}개');
+          _filter.filterByRepeatCount(scannedSubscriptions, 2);
+      Log.d('반복 결제된 구독: ${repeatSubscriptions.length}개');
 
       if (repeatSubscriptions.isNotEmpty) {
-        print('첫 번째 반복 구독: ${repeatSubscriptions[0].serviceName}, 반복 횟수: ${repeatSubscriptions[0].repeatCount}');
+        Log.d(
+            '첫 번째 반복 구독: ${repeatSubscriptions[0].serviceName}, 반복 횟수: ${repeatSubscriptions[0].repeatCount}');
       }
 
       if (repeatSubscriptions.isEmpty) {
-        print('반복 결제된 구독이 없음');
+        Log.i('반복 결제된 구독이 없음');
         _errorMessage = AppLocalizations.of(context).repeatSubscriptionNotFound;
         _isLoading = false;
         notifyListeners();
@@ -96,21 +101,24 @@ class SmsScanController extends ChangeNotifier {
       }
 
       // 구독 목록 가져오기
-      final provider = Provider.of<SubscriptionProvider>(context, listen: false);
+      final provider =
+          Provider.of<SubscriptionProvider>(context, listen: false);
       final existingSubscriptions = provider.subscriptions;
-      print('기존 구독: ${existingSubscriptions.length}개');
+      Log.d('기존 구독: ${existingSubscriptions.length}개');
 
       // 중복 구독 필터링
-      final filteredSubscriptions = _filter.filterDuplicates(repeatSubscriptions, existingSubscriptions);
+      final filteredSubscriptions =
-      print('중복 제거 후 구독: ${filteredSubscriptions.length}개');
+          _filter.filterDuplicates(repeatSubscriptions, existingSubscriptions);
+      Log.d('중복 제거 후 구독: ${filteredSubscriptions.length}개');
 
       if (filteredSubscriptions.isNotEmpty) {
-        print('첫 번째 필터링된 구독: ${filteredSubscriptions[0].serviceName}, 반복 횟수: ${filteredSubscriptions[0].repeatCount}');
+        Log.d(
+            '첫 번째 필터링된 구독: ${filteredSubscriptions[0].serviceName}, 반복 횟수: ${filteredSubscriptions[0].repeatCount}');
       }
 
       // 중복 제거 후 신규 구독이 없는 경우
       if (filteredSubscriptions.isEmpty) {
-        print('중복 제거 후 신규 구독이 없음');
+        Log.i('중복 제거 후 신규 구독이 없음');
         _isLoading = false;
         notifyListeners();
         return;
@@ -121,9 +129,10 @@ class SmsScanController extends ChangeNotifier {
       websiteUrlController.text = ''; // URL 입력 필드 초기화
       notifyListeners();
     } catch (e) {
-      print('SMS 스캔 중 오류 발생: $e');
+      Log.e('SMS 스캔 중 오류 발생', e);
       if (context.mounted) {
-        _errorMessage = AppLocalizations.of(context).smsScanErrorWithMessage(e.toString());
+        _errorMessage =
+            AppLocalizations.of(context).smsScanErrorWithMessage(e.toString());
         _isLoading = false;
         notifyListeners();
       }
@@ -136,17 +145,22 @@ class SmsScanController extends ChangeNotifier {
     final subscription = _scannedSubscriptions[_currentIndex];
 
     try {
-      final provider = Provider.of<SubscriptionProvider>(context, listen: false);
+      final provider =
-      final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+          Provider.of<SubscriptionProvider>(context, listen: false);
+      final categoryProvider =
+          Provider.of<CategoryProvider>(context, listen: false);
 
-      final finalCategoryId = _selectedCategoryId ?? subscription.category ?? getDefaultCategoryId(categoryProvider);
+      final finalCategoryId = _selectedCategoryId ??
+          subscription.category ??
+          getDefaultCategoryId(categoryProvider);
 
       // websiteUrl 처리
       final websiteUrl = websiteUrlController.text.trim().isNotEmpty
           ? websiteUrlController.text.trim()
           : subscription.websiteUrl;
 
-      print('구독 추가 시도: ${subscription.serviceName}, 카테고리: $finalCategoryId, URL: $websiteUrl');
+      Log.d(
+          '구독 추가 시도: ${subscription.serviceName}, 카테고리: $finalCategoryId, URL: $websiteUrl');
 
       // addSubscription 호출
       await provider.addSubscription(
@@ -162,19 +176,20 @@ class SmsScanController extends ChangeNotifier {
         currency: subscription.currency,
       );
 
-      print('구독 추가 성공: ${subscription.serviceName}');
+      Log.i('구독 추가 성공: ${subscription.serviceName}');
-      
+      if (!context.mounted) return;
       moveToNextSubscription(context);
     } catch (e) {
-      print('구독 추가 중 오류 발생: $e');
+      Log.e('구독 추가 중 오류 발생', e);
       // 오류가 있어도 다음 구독으로 이동
+      if (!context.mounted) return;
       moveToNextSubscription(context);
     }
   }
 
   void skipCurrentSubscription(BuildContext context) {
     final subscription = _scannedSubscriptions[_currentIndex];
-    print('구독 건너뛰기: ${subscription.serviceName}');
+    Log.i('구독 건너뛰기: ${subscription.serviceName}');
     moveToNextSubscription(context);
   }
 
@@ -193,7 +208,8 @@ class SmsScanController extends ChangeNotifier {
 
   void navigateToHome(BuildContext context) {
     // NavigationProvider를 사용하여 홈 화면으로 이동
-    final navigationProvider = Provider.of<NavigationProvider>(context, listen: false);
+    final navigationProvider =
+        Provider.of<NavigationProvider>(context, listen: false);
     navigationProvider.updateCurrentIndex(0);
   }
 
@@ -209,7 +225,7 @@ class SmsScanController extends ChangeNotifier {
       (cat) => cat.name == 'other',
       orElse: () => categoryProvider.categories.first,
     );
-    print('기본 카테고리 설정: ${otherCategory.name} (ID: ${otherCategory.id})');
+    Log.d('기본 카테고리 설정: ${otherCategory.name} (ID: ${otherCategory.id})');
     return otherCategory.id;
   }
 

lib/l10n/app_localizations.dart

@@ -14,22 +14,21 @@ class AppLocalizations {
 
   // JSON 파일에서 번역 데이터 로드
   Future<void> load() async {
-    String jsonString =
+    String jsonString = await rootBundle.loadString('assets/data/text.json');
-        await rootBundle.loadString('assets/data/text.json');
     Map<String, dynamic> jsonMap = json.decode(jsonString);
     _localizedStrings = jsonMap[locale.languageCode];
   }
 
   String get appTitle => _localizedStrings['appTitle'] ?? 'SubManager';
-  String get appSubtitle => _localizedStrings['appSubtitle'] ?? 'Manage subscriptions easily';
+  String get appSubtitle =>
+      _localizedStrings['appSubtitle'] ?? 'Manage subscriptions easily';
   String get subscriptionManagement =>
       _localizedStrings['subscriptionManagement'] ?? 'Subscription Management';
   String get addSubscription =>
       _localizedStrings['addSubscription'] ?? 'Add Subscription';
   String get subscriptionName =>
       _localizedStrings['subscriptionName'] ?? 'Service Name';
-  String get monthlyCost =>
+  String get monthlyCost => _localizedStrings['monthlyCost'] ?? 'Monthly Cost';
-      _localizedStrings['monthlyCost'] ?? 'Monthly Cost';
   String get billingCycle =>
       _localizedStrings['billingCycle'] ?? 'Billing Cycle';
   String get nextBillingDate =>
@@ -55,29 +54,50 @@ class AppLocalizations {
       _localizedStrings['categoryManagement'] ?? 'Category Management';
   String get categoryName =>
       _localizedStrings['categoryName'] ?? 'Category Name';
-  String get selectColor =>
+  String get selectColor => _localizedStrings['selectColor'] ?? 'Select Color';
-      _localizedStrings['selectColor'] ?? 'Select Color';
+  String get selectIcon => _localizedStrings['selectIcon'] ?? 'Select Icon';
-  String get selectIcon =>
+  String get addCategory => _localizedStrings['addCategory'] ?? 'Add Category';
-      _localizedStrings['selectIcon'] ?? 'Select Icon';
-  String get addCategory =>
-      _localizedStrings['addCategory'] ?? 'Add Category';
   String get settings => _localizedStrings['settings'] ?? 'Settings';
   String get darkMode => _localizedStrings['darkMode'] ?? 'Dark Mode';
   String get language => _localizedStrings['language'] ?? 'Language';
   String get notifications =>
       _localizedStrings['notifications'] ?? 'Notifications';
   String get appLock => _localizedStrings['appLock'] ?? 'App Lock';
+  // SMS 권한 온보딩/설정
+  String get smsPermissionTitle =>
+      _localizedStrings['smsPermissionTitle'] ?? 'Request SMS Permission';
+  String get smsPermissionReasonTitle =>
+      _localizedStrings['smsPermissionReasonTitle'] ?? 'Why';
+  String get smsPermissionReasonBody =>
+      _localizedStrings['smsPermissionReasonBody'] ??
+      'We analyze payment-related SMS to auto-detect subscriptions. Processing happens locally only.';
+  String get smsPermissionScopeTitle =>
+      _localizedStrings['smsPermissionScopeTitle'] ?? 'Scope';
+  String get smsPermissionScopeBody =>
+      _localizedStrings['smsPermissionScopeBody'] ??
+      'We scan only payment-related SMS patterns (service/amount/date) locally; no data leaves your device.';
+  String get permanentlyDeniedMessage =>
+      _localizedStrings['permanentlyDeniedMessage'] ??
+      'Permission is permanently denied. Enable it in Settings.';
+  String get openSettings =>
+      _localizedStrings['openSettings'] ?? 'Open Settings';
+  String get later => _localizedStrings['later'] ?? 'Later';
+  String get requesting => _localizedStrings['requesting'] ?? 'Requesting...';
+  String get smsPermissionLabel =>
+      _localizedStrings['smsPermissionLabel'] ?? 'SMS Permission';
   // 알림 설정
   String get notificationPermission =>
       _localizedStrings['notificationPermission'] ?? 'Notification Permission';
   String get notificationPermissionDesc =>
-      _localizedStrings['notificationPermissionDesc'] ?? 'Permission is required to receive notifications';
+      _localizedStrings['notificationPermissionDesc'] ??
+      'Permission is required to receive notifications';
   String get requestPermission =>
       _localizedStrings['requestPermission'] ?? 'Request Permission';
   String get paymentNotification =>
       _localizedStrings['paymentNotification'] ?? 'Payment Due Notification';
   String get paymentNotificationDesc =>
-      _localizedStrings['paymentNotificationDesc'] ?? 'Receive notification on payment due date';
+      _localizedStrings['paymentNotificationDesc'] ??
+      'Receive notification on payment due date';
   String get notificationTiming =>
       _localizedStrings['notificationTiming'] ?? 'Notification Timing';
   String get notificationTime =>
@@ -85,11 +105,14 @@ class AppLocalizations {
   String get dailyReminder =>
       _localizedStrings['dailyReminder'] ?? 'Daily Reminder';
   String get dailyReminderEnabled =>
-      _localizedStrings['dailyReminderEnabled'] ?? 'Receive daily notifications until payment date';
+      _localizedStrings['dailyReminderEnabled'] ??
+      'Receive daily notifications until payment date';
   String get dailyReminderDisabled =>
-      _localizedStrings['dailyReminderDisabled'] ?? 'Receive notification @ day(s) before payment';
+      _localizedStrings['dailyReminderDisabled'] ??
+      'Receive notification @ day(s) before payment';
   String get notificationPermissionDenied =>
-      _localizedStrings['notificationPermissionDenied'] ?? 'Notification permission denied';
+      _localizedStrings['notificationPermissionDenied'] ??
+      'Notification permission denied';
   // 앱 정보
   String get appInfo => _localizedStrings['appInfo'] ?? 'App Info';
   String get version => _localizedStrings['version'] ?? 'Version';
@@ -102,7 +125,8 @@ class AppLocalizations {
   String get lightTheme => _localizedStrings['lightTheme'] ?? 'Light';
   String get darkTheme => _localizedStrings['darkTheme'] ?? 'Dark';
   String get oledTheme => _localizedStrings['oledTheme'] ?? 'OLED Black';
-  String get systemTheme => _localizedStrings['systemTheme'] ?? 'System Default';
+  String get systemTheme =>
+      _localizedStrings['systemTheme'] ?? 'System Default';
   // 기타 메시지
   String get subscriptionAdded =>
       _localizedStrings['subscriptionAdded'] ?? 'Subscription added';
@@ -112,72 +136,133 @@ class AppLocalizations {
   String get japanese => _localizedStrings['japanese'] ?? '日本語';
   String get chinese => _localizedStrings['chinese'] ?? '中文';
   // 날짜
-  String get oneDayBefore => _localizedStrings['oneDayBefore'] ?? '1 day before';
+  String get oneDayBefore =>
-  String get twoDaysBefore => _localizedStrings['twoDaysBefore'] ?? '2 days before';
+      _localizedStrings['oneDayBefore'] ?? '1 day before';
-  String get threeDaysBefore => _localizedStrings['threeDaysBefore'] ?? '3 days before';
+  String get twoDaysBefore =>
+      _localizedStrings['twoDaysBefore'] ?? '2 days before';
+  String get threeDaysBefore =>
+      _localizedStrings['threeDaysBefore'] ?? '3 days before';
   // 추가 메시지
-  String get requiredFieldsError => _localizedStrings['requiredFieldsError'] ?? 'Please fill in all required fields';
+  String get requiredFieldsError =>
-  String get subscriptionUpdated => _localizedStrings['subscriptionUpdated'] ?? 'Subscription information has been updated';
+      _localizedStrings['requiredFieldsError'] ??
-  String get officialCancelPageNotFound => _localizedStrings['officialCancelPageNotFound'] ?? 'Official cancellation page not found. Redirecting to Google search.';
+      'Please fill in all required fields';
-  String get cannotOpenWebsite => _localizedStrings['cannotOpenWebsite'] ?? 'Cannot open website';
+  String get subscriptionUpdated =>
-  String get noWebsiteInfo => _localizedStrings['noWebsiteInfo'] ?? 'No website information available. Please cancel through the website.';
+      _localizedStrings['subscriptionUpdated'] ??
+      'Subscription information has been updated';
+  String get officialCancelPageNotFound =>
+      _localizedStrings['officialCancelPageNotFound'] ??
+      'Official cancellation page not found. Redirecting to Google search.';
+  String get cannotOpenWebsite =>
+      _localizedStrings['cannotOpenWebsite'] ?? 'Cannot open website';
+  String get noWebsiteInfo =>
+      _localizedStrings['noWebsiteInfo'] ??
+      'No website information available. Please cancel through the website.';
   String get editMode => _localizedStrings['editMode'] ?? 'Edit Mode';
-  String get changesAppliedAfterSave => _localizedStrings['changesAppliedAfterSave'] ?? 'Changes will be applied after saving';
+  String get changesAppliedAfterSave =>
+      _localizedStrings['changesAppliedAfterSave'] ??
+      'Changes will be applied after saving';
   String get saveChanges => _localizedStrings['saveChanges'] ?? 'Save Changes';
-  String get monthlyExpense => _localizedStrings['monthlyExpense'] ?? 'Monthly Expense';
+  String get monthlyExpense =>
+      _localizedStrings['monthlyExpense'] ?? 'Monthly Expense';
   String get websiteUrl => _localizedStrings['websiteUrl'] ?? 'Website URL';
-  String get websiteUrlOptional => _localizedStrings['websiteUrlOptional'] ?? 'Website URL (Optional)';
+  String get websiteUrlOptional =>
+      _localizedStrings['websiteUrlOptional'] ?? 'Website URL (Optional)';
   String get eventPrice => _localizedStrings['eventPrice'] ?? 'Event Price';
-  String get eventPriceHint => _localizedStrings['eventPriceHint'] ?? 'Enter discounted price';
+  String get eventPriceHint =>
-  String get eventPriceRequired => _localizedStrings['eventPriceRequired'] ?? 'Please enter event price';
+      _localizedStrings['eventPriceHint'] ?? 'Enter discounted price';
-  String get invalidPrice => _localizedStrings['invalidPrice'] ?? 'Please enter a valid price';
+  String get eventPriceRequired =>
+      _localizedStrings['eventPriceRequired'] ?? 'Please enter event price';
+  String get invalidPrice =>
+      _localizedStrings['invalidPrice'] ?? 'Please enter a valid price';
   String get smsScanLabel => _localizedStrings['smsScanLabel'] ?? 'SMS';
   String get home => _localizedStrings['home'] ?? 'Home';
   String get analysis => _localizedStrings['analysis'] ?? 'Analysis';
   String get back => _localizedStrings['back'] ?? 'Back';
   String get exitApp => _localizedStrings['exitApp'] ?? 'Exit App';
-  String get exitAppConfirm => _localizedStrings['exitAppConfirm'] ?? 'Are you sure you want to exit SubManager?';
+  String get exitAppConfirm =>
+      _localizedStrings['exitAppConfirm'] ??
+      'Are you sure you want to exit SubManager?';
   String get exit => _localizedStrings['exit'] ?? 'Exit';
-  String get pageNotFound => _localizedStrings['pageNotFound'] ?? 'Page not found';
+  String get pageNotFound =>
-  String get serviceNameExample => _localizedStrings['serviceNameExample'] ?? 'e.g. Netflix, Spotify';
+      _localizedStrings['pageNotFound'] ?? 'Page not found';
-  String get urlExample => _localizedStrings['urlExample'] ?? 'https://example.com';
+  String get serviceNameExample =>
-  String get appLockDesc => _localizedStrings['appLockDesc'] ?? 'App lock with biometric authentication';
+      _localizedStrings['serviceNameExample'] ?? 'e.g. Netflix, Spotify';
-  String get unlockWithBiometric => _localizedStrings['unlockWithBiometric'] ?? 'Unlock with biometric authentication';
+  String get urlExample =>
-  String get authenticationFailed => _localizedStrings['authenticationFailed'] ?? 'Authentication failed. Please try again.';
+      _localizedStrings['urlExample'] ?? 'https://example.com';
-  String get smsPermissionRequired => _localizedStrings['smsPermissionRequired'] ?? 'SMS permission required';
+  String get appLockDesc =>
-  String get noSubscriptionSmsFound => _localizedStrings['noSubscriptionSmsFound'] ?? 'No subscription related SMS found';
+      _localizedStrings['appLockDesc'] ??
-  String get smsScanError => _localizedStrings['smsScanError'] ?? 'Error occurred during SMS scan';
+      'App lock with biometric authentication';
-  String get saveError => _localizedStrings['saveError'] ?? 'Error occurred while saving';
+  String get unlockWithBiometric =>
-  String get newSubscriptionSmsNotFound => _localizedStrings['newSubscriptionSmsNotFound'] ?? 'No new subscription SMS found';
+      _localizedStrings['unlockWithBiometric'] ??
-  String get subscriptionAddError => _localizedStrings['subscriptionAddError'] ?? 'Error adding subscription';
+      'Unlock with biometric authentication';
-  String get allSubscriptionsProcessed => _localizedStrings['allSubscriptionsProcessed'] ?? 'All subscriptions have been processed.';
+  String get authenticationFailed =>
-  String get websiteUrlExtracted => _localizedStrings['websiteUrlExtracted'] ?? 'Website URL (Auto-extracted)';
+      _localizedStrings['authenticationFailed'] ??
+      'Authentication failed. Please try again.';
+  String get smsPermissionRequired =>
+      _localizedStrings['smsPermissionRequired'] ?? 'SMS permission required';
+  String get noSubscriptionSmsFound =>
+      _localizedStrings['noSubscriptionSmsFound'] ??
+      'No subscription related SMS found';
+  String get smsScanError =>
+      _localizedStrings['smsScanError'] ?? 'Error occurred during SMS scan';
+  String get saveError =>
+      _localizedStrings['saveError'] ?? 'Error occurred while saving';
+  String get newSubscriptionSmsNotFound =>
+      _localizedStrings['newSubscriptionSmsNotFound'] ??
+      'No new subscription SMS found';
+  String get subscriptionAddError =>
+      _localizedStrings['subscriptionAddError'] ?? 'Error adding subscription';
+  String get allSubscriptionsProcessed =>
+      _localizedStrings['allSubscriptionsProcessed'] ??
+      'All subscriptions have been processed.';
+  String get websiteUrlExtracted =>
+      _localizedStrings['websiteUrlExtracted'] ??
+      'Website URL (Auto-extracted)';
   String get startDate => _localizedStrings['startDate'] ?? 'Start Date';
   String get endDate => _localizedStrings['endDate'] ?? 'End Date';
 
   // 새로 추가된 항목들
-  String get monthlyTotalSubscriptionCost => _localizedStrings['monthlyTotalSubscriptionCost'] ?? 'Total Monthly Subscription Cost';
+  String get monthlyTotalSubscriptionCost =>
-  String get todaysExchangeRate => _localizedStrings['todaysExchangeRate'] ?? 'Today\'s Exchange Rate';
+      _localizedStrings['monthlyTotalSubscriptionCost'] ??
+      'Total Monthly Subscription Cost';
+  String get todaysExchangeRate =>
+      _localizedStrings['todaysExchangeRate'] ?? 'Today\'s Exchange Rate';
   String get won => _localizedStrings['won'] ?? 'KRW';
-  String get estimatedAnnualCost => _localizedStrings['estimatedAnnualCost'] ?? 'Estimated Annual Cost';
+  String get estimatedAnnualCost =>
-  String get totalSubscriptionServices => _localizedStrings['totalSubscriptionServices'] ?? 'Total Subscription Services';
+      _localizedStrings['estimatedAnnualCost'] ?? 'Estimated Annual Cost';
+  String get totalSubscriptionServices =>
+      _localizedStrings['totalSubscriptionServices'] ??
+      'Total Subscription Services';
   String get services => _localizedStrings['services'] ?? 'services';
-  String get eventDiscountActive => _localizedStrings['eventDiscountActive'] ?? 'Event Discount Active';
+  String get eventDiscountActive =>
+      _localizedStrings['eventDiscountActive'] ?? 'Event Discount Active';
   String get saving => _localizedStrings['saving'] ?? 'Saving';
-  String get paymentDueToday => _localizedStrings['paymentDueToday'] ?? 'Payment Due Today';
+  String get paymentDueToday =>
-  String get paymentInfoNeeded => _localizedStrings['paymentInfoNeeded'] ?? 'Payment Info Needed';
+      _localizedStrings['paymentDueToday'] ?? 'Payment Due Today';
+  String get paymentInfoNeeded =>
+      _localizedStrings['paymentInfoNeeded'] ?? 'Payment Info Needed';
   String get event => _localizedStrings['event'] ?? 'Event';
 
   // 카테고리 getter들
   String get categoryMusic => _localizedStrings['categoryMusic'] ?? 'Music';
-  String get categoryOttVideo => _localizedStrings['categoryOttVideo'] ?? 'OTT(Video)';
+  String get categoryOttVideo =>
-  String get categoryStorageCloud => _localizedStrings['categoryStorageCloud'] ?? 'Storage/Cloud';
+      _localizedStrings['categoryOttVideo'] ?? 'OTT(Video)';
-  String get categoryTelecomInternetTv => _localizedStrings['categoryTelecomInternetTv'] ?? 'Telecom · Internet · TV';
+  String get categoryStorageCloud =>
-  String get categoryLifestyle => _localizedStrings['categoryLifestyle'] ?? 'Lifestyle';
+      _localizedStrings['categoryStorageCloud'] ?? 'Storage/Cloud';
-  String get categoryShoppingEcommerce => _localizedStrings['categoryShoppingEcommerce'] ?? 'Shopping/E-commerce';
+  String get categoryTelecomInternetTv =>
-  String get categoryProgramming => _localizedStrings['categoryProgramming'] ?? 'Programming';
+      _localizedStrings['categoryTelecomInternetTv'] ??
-  String get categoryCollaborationOffice => _localizedStrings['categoryCollaborationOffice'] ?? 'Collaboration/Office';
+      'Telecom · Internet · TV';
-  String get categoryAiService => _localizedStrings['categoryAiService'] ?? 'AI Service';
+  String get categoryLifestyle =>
+      _localizedStrings['categoryLifestyle'] ?? 'Lifestyle';
+  String get categoryShoppingEcommerce =>
+      _localizedStrings['categoryShoppingEcommerce'] ?? 'Shopping/E-commerce';
+  String get categoryProgramming =>
+      _localizedStrings['categoryProgramming'] ?? 'Programming';
+  String get categoryCollaborationOffice =>
+      _localizedStrings['categoryCollaborationOffice'] ??
+      'Collaboration/Office';
+  String get categoryAiService =>
+      _localizedStrings['categoryAiService'] ?? 'AI Service';
   String get categoryOther => _localizedStrings['categoryOther'] ?? 'Other';
 
   // 동적 메시지 생성 메서드
@@ -186,115 +271,166 @@ class AppLocalizations {
   }
 
   String dailyReminderDisabledWithDays(int days) {
-    final template = _localizedStrings['dailyReminderDisabled'] ?? 'Receive notification @ day(s) before payment';
+    final template = _localizedStrings['dailyReminderDisabled'] ??
+        'Receive notification @ day(s) before payment';
     return template.replaceAll('@', days.toString());
   }
 
   String subscriptionAddedWithName(String serviceName) {
-    final template = _localizedStrings['subscriptionAddedTemplate'] ?? '@ 구독이 추가되었습니다.';
+    final template =
+        _localizedStrings['subscriptionAddedTemplate'] ?? '@ 구독이 추가되었습니다.';
     return template.replaceAll('@', serviceName);
   }
 
   String subscriptionDeleted(String serviceName) {
-    final template = _localizedStrings['subscriptionDeleted'] ?? '@ subscription has been deleted';
+    final template = _localizedStrings['subscriptionDeleted'] ??
+        '@ subscription has been deleted';
     return template.replaceAll('@', serviceName);
   }
 
   String totalExpenseCopied(String amount) {
-    final template = _localizedStrings['totalExpenseCopied'] ?? 'Total expense copied: @';
+    final template =
+        _localizedStrings['totalExpenseCopied'] ?? 'Total expense copied: @';
     return template.replaceAll('@', amount);
   }
 
   String serviceRecognized(String serviceName) {
-    final template = _localizedStrings['serviceRecognized'] ?? '@ service has been recognized automatically.';
+    final template = _localizedStrings['serviceRecognized'] ??
+        '@ service has been recognized automatically.';
     return template.replaceAll('@', serviceName);
   }
 
   String smsScanErrorWithMessage(String error) {
-    final template = _localizedStrings['smsScanError'] ?? 'Error occurred during SMS scan: @';
+    final template = _localizedStrings['smsScanError'] ??
+        'Error occurred during SMS scan: @';
     return template.replaceAll('@', error);
   }
 
   String saveErrorWithMessage(String error) {
-    final template = _localizedStrings['saveError'] ?? 'Error occurred while saving: @';
+    final template =
+        _localizedStrings['saveError'] ?? 'Error occurred while saving: @';
     return template.replaceAll('@', error);
   }
 
   String subscriptionAddErrorWithMessage(String error) {
-    final template = _localizedStrings['subscriptionAddError'] ?? 'Error adding subscription: @';
+    final template = _localizedStrings['subscriptionAddError'] ??
+        'Error adding subscription: @';
     return template.replaceAll('@', error);
   }
 
   String subscriptionSkipped(String serviceName) {
-    final template = _localizedStrings['subscriptionSkipped'] ?? '@ subscription skipped.';
+    final template =
+        _localizedStrings['subscriptionSkipped'] ?? '@ subscription skipped.';
     return template.replaceAll('@', serviceName);
   }
 
   // 홈화면 관련
-  String get mySubscriptions => _localizedStrings['mySubscriptions'] ?? 'My Subscriptions';
+  String get mySubscriptions =>
+      _localizedStrings['mySubscriptions'] ?? 'My Subscriptions';
 
   String subscriptionCount(int count) {
     if (locale.languageCode == 'ko') {
-      return '${count}개';
+      return '$count개';
     } else if (locale.languageCode == 'ja') {
-      return '${count}個';
+      return '$count個';
     } else if (locale.languageCode == 'zh') {
-      return '${count}个';
+      return '$count个';
     } else {
       return count.toString();
     }
   }
 
   // 분석화면 관련
-  String get monthlyExpenseTitle => _localizedStrings['monthlyExpenseTitle'] ?? 'Monthly Expense Status';
+  String get monthlyExpenseTitle =>
-  String get recentSixMonthsTrend => _localizedStrings['recentSixMonthsTrend'] ?? 'Recent 6 months trend';
+      _localizedStrings['monthlyExpenseTitle'] ?? 'Monthly Expense Status';
-  String get monthlySubscriptionExpense => _localizedStrings['monthlySubscriptionExpense'] ?? 'Monthly subscription expense';
+  String get recentSixMonthsTrend =>
-  String get subscriptionServiceRatio => _localizedStrings['subscriptionServiceRatio'] ?? 'Subscription Service Ratio';
+      _localizedStrings['recentSixMonthsTrend'] ?? 'Recent 6 months trend';
-  String get monthlyExpenseBasis => _localizedStrings['monthlyExpenseBasis'] ?? 'Based on monthly expense';
+  String get monthlySubscriptionExpense =>
-  String get noSubscriptionServices => _localizedStrings['noSubscriptionServices'] ?? 'No subscription services';
+      _localizedStrings['monthlySubscriptionExpense'] ??
-  String get totalExpenseSummary => _localizedStrings['totalExpenseSummary'] ?? 'Total Expense Summary';
+      'Monthly subscription expense';
-  String get monthlyTotalAmount => _localizedStrings['monthlyTotalAmount'] ?? 'Monthly Total Amount';
+  String get subscriptionServiceRatio =>
-  String get totalExpense => _localizedStrings['totalExpense'] ?? 'Total Expense';
+      _localizedStrings['subscriptionServiceRatio'] ??
-  String get totalServices => _localizedStrings['totalServices'] ?? 'Total Services';
+      'Subscription Service Ratio';
+  String get monthlyExpenseBasis =>
+      _localizedStrings['monthlyExpenseBasis'] ?? 'Based on monthly expense';
+  String get noSubscriptionServices =>
+      _localizedStrings['noSubscriptionServices'] ?? 'No subscription services';
+  String get totalExpenseSummary =>
+      _localizedStrings['totalExpenseSummary'] ?? 'Total Expense Summary';
+  String get monthlyTotalAmount =>
+      _localizedStrings['monthlyTotalAmount'] ?? 'Monthly Total Amount';
+  String get totalExpense =>
+      _localizedStrings['totalExpense'] ?? 'Total Expense';
+  String get totalServices =>
+      _localizedStrings['totalServices'] ?? 'Total Services';
   String get servicesUnit => _localizedStrings['servicesUnit'] ?? 'services';
   String get averageCost => _localizedStrings['averageCost'] ?? 'Average Cost';
-  String get eventDiscountStatus => _localizedStrings['eventDiscountStatus'] ?? 'Event Discount Status';
+  String get eventDiscountStatus =>
-  String get inProgressUnit => _localizedStrings['inProgressUnit'] ?? 'in progress';
+      _localizedStrings['eventDiscountStatus'] ?? 'Event Discount Status';
-  String get monthlySavingAmount => _localizedStrings['monthlySavingAmount'] ?? 'Monthly Saving Amount';
+  String get inProgressUnit =>
-  String get eventsInProgress => _localizedStrings['eventsInProgress'] ?? 'Events in Progress';
+      _localizedStrings['inProgressUnit'] ?? 'in progress';
-  String get discountPercent => _localizedStrings['discountPercent'] ?? '% discount';
+  String get monthlySavingAmount =>
+      _localizedStrings['monthlySavingAmount'] ?? 'Monthly Saving Amount';
+  String get eventsInProgress =>
+      _localizedStrings['eventsInProgress'] ?? 'Events in Progress';
+  String get discountPercent =>
+      _localizedStrings['discountPercent'] ?? '% discount';
   String get currencyWon => _localizedStrings['currencyWon'] ?? 'KRW';
 
   // SMS 스캔 관련
-  String get scanningMessages => _localizedStrings['scanningMessages'] ?? 'Scanning SMS messages...';
+  String get scanningMessages =>
-  String get findingSubscriptions => _localizedStrings['findingSubscriptions'] ?? 'Finding subscription services';
+      _localizedStrings['scanningMessages'] ?? 'Scanning SMS messages...';
-  String get subscriptionNotFound => _localizedStrings['subscriptionNotFound'] ?? 'Subscription information not found.';
+  String get findingSubscriptions =>
-  String get repeatSubscriptionNotFound => _localizedStrings['repeatSubscriptionNotFound'] ?? 'No repeated subscription information found.';
+      _localizedStrings['findingSubscriptions'] ??
-  String get newSubscriptionNotFound => _localizedStrings['newSubscriptionNotFound'] ?? 'No new subscription SMS found';
+      'Finding subscription services';
-  String get findRepeatSubscriptions => _localizedStrings['findRepeatSubscriptions'] ?? 'Find subscriptions paid 2+ times';
+  String get subscriptionNotFound =>
-  String get scanTextMessages => _localizedStrings['scanTextMessages'] ?? 'Scan text messages to automatically find repeatedly paid subscriptions. Service names and amounts can be extracted for easy subscription addition.';
+      _localizedStrings['subscriptionNotFound'] ??
-  String get startScanning => _localizedStrings['startScanning'] ?? 'Start Scanning';
+      'Subscription information not found.';
-  String get foundSubscription => _localizedStrings['foundSubscription'] ?? 'Found subscription';
+  String get repeatSubscriptionNotFound =>
+      _localizedStrings['repeatSubscriptionNotFound'] ??
+      'No repeated subscription information found.';
+  String get newSubscriptionNotFound =>
+      _localizedStrings['newSubscriptionNotFound'] ??
+      'No new subscription SMS found';
+  String get findRepeatSubscriptions =>
+      _localizedStrings['findRepeatSubscriptions'] ??
+      'Find subscriptions paid 2+ times';
+  String get scanTextMessages =>
+      _localizedStrings['scanTextMessages'] ??
+      'Scan text messages to automatically find repeatedly paid subscriptions. Service names and amounts can be extracted for easy subscription addition.';
+  String get startScanning =>
+      _localizedStrings['startScanning'] ?? 'Start Scanning';
+  String get foundSubscription =>
+      _localizedStrings['foundSubscription'] ?? 'Found subscription';
   String get serviceName => _localizedStrings['serviceName'] ?? 'Service Name';
-  String get nextBillingDateLabel => _localizedStrings['nextBillingDateLabel'] ?? 'Next Billing Date';
+  String get nextBillingDateLabel =>
+      _localizedStrings['nextBillingDateLabel'] ?? 'Next Billing Date';
   String get category => _localizedStrings['category'] ?? 'Category';
-  String get websiteUrlAuto => _localizedStrings['websiteUrlAuto'] ?? 'Website URL (Auto-extracted)';
+  String get websiteUrlAuto =>
-  String get websiteUrlHint => _localizedStrings['websiteUrlHint'] ?? 'Edit website URL or leave empty';
+      _localizedStrings['websiteUrlAuto'] ?? 'Website URL (Auto-extracted)';
+  String get websiteUrlHint =>
+      _localizedStrings['websiteUrlHint'] ?? 'Edit website URL or leave empty';
   String get skip => _localizedStrings['skip'] ?? 'Skip';
   String get add => _localizedStrings['add'] ?? 'Add';
-  String get nextBillingDateRequired => _localizedStrings['nextBillingDateRequired'] ?? 'Next billing date verification required';
+  String get nextBillingDateRequired =>
+      _localizedStrings['nextBillingDateRequired'] ??
+      'Next billing date verification required';
 
   String nextBillingDateEstimated(String date, int days) {
-    final template = _localizedStrings['nextBillingDateEstimated'] ?? 'Next estimated billing date: @ (# days later)';
+    final template = _localizedStrings['nextBillingDateEstimated'] ??
+        'Next estimated billing date: @ (# days later)';
     return template.replaceAll('@', date).replaceAll('#', days.toString());
   }
 
   String nextBillingDateInfo(String date, int days) {
-    final template = _localizedStrings['nextBillingDateInfo'] ?? 'Next billing date: @ (# days later)';
+    final template = _localizedStrings['nextBillingDateInfo'] ??
+        'Next billing date: @ (# days later)';
     return template.replaceAll('@', date).replaceAll('#', days.toString());
   }
 
-  String get nextBillingDatePastRequired => _localizedStrings['nextBillingDatePastRequired'] ?? 'Next billing date verification required (past date)';
+  String get nextBillingDatePastRequired =>
+      _localizedStrings['nextBillingDatePastRequired'] ??
+      'Next billing date verification required (past date)';
 
   String formatDate(DateTime date) {
     if (locale.languageCode == 'ko') {
@@ -304,23 +440,37 @@ class AppLocalizations {
     } else if (locale.languageCode == 'zh') {
       return '${date.year}年${date.month}月${date.day}日';
     } else {
-      final months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+      final months = [
+        'Jan',
+        'Feb',
+        'Mar',
+        'Apr',
+        'May',
+        'Jun',
+        'Jul',
+        'Aug',
+        'Sep',
+        'Oct',
+        'Nov',
+        'Dec'
+      ];
       return '${months[date.month - 1]} ${date.day}, ${date.year}';
     }
   }
 
   String repeatCountDetected(int count) {
-    final template = _localizedStrings['repeatCountDetected'] ?? '@ payment(s) detected';
+    final template =
+        _localizedStrings['repeatCountDetected'] ?? '@ payment(s) detected';
     return template.replaceAll('@', count.toString());
   }
 
   String servicesInProgress(int count) {
     if (locale.languageCode == 'ko') {
-      return '${count}개 진행중';
+      return '$count개 진행중';
     } else if (locale.languageCode == 'ja') {
-      return '${count}個進行中';
+      return '$count個進行中';
     } else if (locale.languageCode == 'zh') {
-      return '${count}个进行中';
+      return '$count个进行中';
     } else {
       return '$count in progress';
     }
@@ -328,7 +478,8 @@ class AppLocalizations {
 
   // 새로 추가된 동적 메서드들
   String paymentDueInDays(int days) {
-    final template = _localizedStrings['paymentDueInDays'] ?? 'Payment due in @ days';
+    final template =
+        _localizedStrings['paymentDueInDays'] ?? 'Payment due in @ days';
     return template.replaceAll('@', days.toString());
   }
 
@@ -338,27 +489,37 @@ class AppLocalizations {
   }
 
   String exchangeRateFormat(String rate) {
-    final template = _localizedStrings['exchangeRateFormat'] ?? 'Today\'s rate: @';
+    final template =
+        _localizedStrings['exchangeRateFormat'] ?? 'Today\'s rate: @';
     return template.replaceAll('@', rate);
   }
 
   // 결제 주기 결제 메시지
-  String get billingCyclePayment => _localizedStrings['billingCyclePayment'] ?? '@ Payment';
+  String get billingCyclePayment =>
+      _localizedStrings['billingCyclePayment'] ?? '@ Payment';
 
   // 할인 금액 표시 getter들
-  String get discountAmountWon => _localizedStrings['discountAmountWon'] ?? 'Save ₩@';
+  String get discountAmountWon =>
-  String get discountAmountDollar => _localizedStrings['discountAmountDollar'] ?? 'Save \$@';
+      _localizedStrings['discountAmountWon'] ?? 'Save ₩@';
-  String get discountAmountYen => _localizedStrings['discountAmountYen'] ?? 'Save ¥@';
+  String get discountAmountDollar =>
-  String get discountAmountYuan => _localizedStrings['discountAmountYuan'] ?? 'Save ¥@';
+      _localizedStrings['discountAmountDollar'] ?? 'Save \$@';
+  String get discountAmountYen =>
+      _localizedStrings['discountAmountYen'] ?? 'Save ¥@';
+  String get discountAmountYuan =>
+      _localizedStrings['discountAmountYuan'] ?? 'Save ¥@';
 
   // 결제 주기 관련 getter
   String get monthly => _localizedStrings['monthly'] ?? 'Monthly';
   String get weekly => _localizedStrings['weekly'] ?? 'Weekly';
   String get yearly => _localizedStrings['yearly'] ?? 'Yearly';
-  String get billingCycleMonthly => _localizedStrings['billingCycleMonthly'] ?? 'Monthly';
+  String get billingCycleMonthly =>
-  String get billingCycleQuarterly => _localizedStrings['billingCycleQuarterly'] ?? 'Quarterly';
+      _localizedStrings['billingCycleMonthly'] ?? 'Monthly';
-  String get billingCycleHalfYearly => _localizedStrings['billingCycleHalfYearly'] ?? 'Half-Yearly';
+  String get billingCycleQuarterly =>
-  String get billingCycleYearly => _localizedStrings['billingCycleYearly'] ?? 'Yearly';
+      _localizedStrings['billingCycleQuarterly'] ?? 'Quarterly';
+  String get billingCycleHalfYearly =>
+      _localizedStrings['billingCycleHalfYearly'] ?? 'Half-Yearly';
+  String get billingCycleYearly =>
+      _localizedStrings['billingCycleYearly'] ?? 'Yearly';
 
   // 색상 관련 getter
   String get colorBlue => _localizedStrings['colorBlue'] ?? 'Blue';
@@ -368,48 +529,75 @@ class AppLocalizations {
   String get colorPurple => _localizedStrings['colorPurple'] ?? 'Purple';
 
   // 날짜 형식 관련 getter
-  String get dateFormatFull => _localizedStrings['dateFormatFull'] ?? 'MMM dd, yyyy';
+  String get dateFormatFull =>
+      _localizedStrings['dateFormatFull'] ?? 'MMM dd, yyyy';
   String get dateFormatShort => _localizedStrings['dateFormatShort'] ?? 'MM/dd';
 
   // USD 환율 표시 형식
-  String get exchangeRateDisplay => _localizedStrings['exchangeRateDisplay'] ?? '\$1 = @';
+  String get exchangeRateDisplay =>
+      _localizedStrings['exchangeRateDisplay'] ?? '\$1 = @';
 
   // 라벨 및 힌트 텍스트
-  String get labelServiceName => _localizedStrings['labelServiceName'] ?? 'Service Name';
+  String get labelServiceName =>
-  String get hintServiceName => _localizedStrings['hintServiceName'] ?? 'e.g. Netflix, Spotify';
+      _localizedStrings['labelServiceName'] ?? 'Service Name';
-  String get labelMonthlyExpense => _localizedStrings['labelMonthlyExpense'] ?? 'Monthly Expense';
+  String get hintServiceName =>
-  String get labelNextBillingDate => _localizedStrings['labelNextBillingDate'] ?? 'Next Billing Date';
+      _localizedStrings['hintServiceName'] ?? 'e.g. Netflix, Spotify';
-  String get labelWebsiteUrl => _localizedStrings['labelWebsiteUrl'] ?? 'Website URL (Optional)';
+  String get labelMonthlyExpense =>
-  String get hintWebsiteUrl => _localizedStrings['hintWebsiteUrl'] ?? 'https://example.com';
+      _localizedStrings['labelMonthlyExpense'] ?? 'Monthly Expense';
-  String get labelEventPrice => _localizedStrings['labelEventPrice'] ?? 'Event Price';
+  String get labelNextBillingDate =>
-  String get hintEventPrice => _localizedStrings['hintEventPrice'] ?? 'Enter discounted price';
+      _localizedStrings['labelNextBillingDate'] ?? 'Next Billing Date';
+  String get labelWebsiteUrl =>
+      _localizedStrings['labelWebsiteUrl'] ?? 'Website URL (Optional)';
+  String get hintWebsiteUrl =>
+      _localizedStrings['hintWebsiteUrl'] ?? 'https://example.com';
+  String get labelEventPrice =>
+      _localizedStrings['labelEventPrice'] ?? 'Event Price';
+  String get hintEventPrice =>
+      _localizedStrings['hintEventPrice'] ?? 'Enter discounted price';
   String get labelCategory => _localizedStrings['labelCategory'] ?? 'Category';
 
   // 기타 번역
-  String get subscription => _localizedStrings['subscription'] ?? 'Subscription';
+  String get subscription =>
+      _localizedStrings['subscription'] ?? 'Subscription';
   String get movie => _localizedStrings['movie'] ?? 'Movie';
   String get music => _localizedStrings['music'] ?? 'Music';
   String get exercise => _localizedStrings['exercise'] ?? 'Exercise';
   String get shopping => _localizedStrings['shopping'] ?? 'Shopping';
   String get currency => _localizedStrings['currency'] ?? 'Currency';
-  String get websiteInfo => _localizedStrings['websiteInfo'] ?? 'Website Information';
+  String get websiteInfo =>
-  String get cancelGuide => _localizedStrings['cancelGuide'] ?? 'Cancellation Guide';
+      _localizedStrings['websiteInfo'] ?? 'Website Information';
-  String get cancelServiceGuide => _localizedStrings['cancelServiceGuide'] ?? 'To cancel this service, please go to the cancellation page through the link below.';
+  String get cancelGuide =>
-  String get goToCancelPage => _localizedStrings['goToCancelPage'] ?? 'Go to Cancellation Page';
+      _localizedStrings['cancelGuide'] ?? 'Cancellation Guide';
-  String get urlAutoMatchInfo => _localizedStrings['urlAutoMatchInfo'] ?? 'If URL is empty, it will be automatically matched based on the service name';
+  String get cancelServiceGuide =>
+      _localizedStrings['cancelServiceGuide'] ??
+      'To cancel this service, please go to the cancellation page through the link below.';
+  String get goToCancelPage =>
+      _localizedStrings['goToCancelPage'] ?? 'Go to Cancellation Page';
+  String get urlAutoMatchInfo =>
+      _localizedStrings['urlAutoMatchInfo'] ??
+      'If URL is empty, it will be automatically matched based on the service name';
   String get dateSelect => _localizedStrings['dateSelect'] ?? 'Select';
 
   // 새로 추가된 getter들
-  String get serviceInfo => _localizedStrings['serviceInfo'] ?? 'Service Information';
+  String get serviceInfo =>
-  String get newSubscriptionAdd => _localizedStrings['newSubscriptionAdd'] ?? 'Add New Subscription';
+      _localizedStrings['serviceInfo'] ?? 'Service Information';
-  String get enterServiceInfo => _localizedStrings['enterServiceInfo'] ?? 'Enter service information';
+  String get newSubscriptionAdd =>
-  String get addSubscriptionButton => _localizedStrings['addSubscriptionButton'] ?? 'Add Subscription';
+      _localizedStrings['newSubscriptionAdd'] ?? 'Add New Subscription';
-  String get serviceNameRequired => _localizedStrings['serviceNameRequired'] ?? 'Please enter service name';
+  String get enterServiceInfo =>
-  String get amountRequired => _localizedStrings['amountRequired'] ?? 'Please enter amount';
+      _localizedStrings['enterServiceInfo'] ?? 'Enter service information';
-  String get subscriptionDetail => _localizedStrings['subscriptionDetail'] ?? 'Subscription Detail';
+  String get addSubscriptionButton =>
+      _localizedStrings['addSubscriptionButton'] ?? 'Add Subscription';
+  String get serviceNameRequired =>
+      _localizedStrings['serviceNameRequired'] ?? 'Please enter service name';
+  String get amountRequired =>
+      _localizedStrings['amountRequired'] ?? 'Please enter amount';
+  String get subscriptionDetail =>
+      _localizedStrings['subscriptionDetail'] ?? 'Subscription Detail';
   String get enterAmount => _localizedStrings['enterAmount'] ?? 'Enter amount';
-  String get invalidAmount => _localizedStrings['invalidAmount'] ?? 'Please enter a valid amount';
+  String get invalidAmount =>
-  String get featureComingSoon => _localizedStrings['featureComingSoon'] ?? 'This feature is coming soon';
+      _localizedStrings['invalidAmount'] ?? 'Please enter a valid amount';
+  String get featureComingSoon =>
+      _localizedStrings['featureComingSoon'] ?? 'This feature is coming soon';
 
   // 결제 주기를 키값으로 변환하여 번역된 이름 반환
   String getBillingCycleName(String billingCycleKey) {
@@ -467,7 +655,8 @@ class AppLocalizationsDelegate extends LocalizationsDelegate<AppLocalizations> {
   const AppLocalizationsDelegate();
 
   @override
-  bool isSupported(Locale locale) => ['en', 'ko', 'ja', 'zh'].contains(locale.languageCode);
+  bool isSupported(Locale locale) =>
+      ['en', 'ko', 'ja', 'zh'].contains(locale.languageCode);
 
   @override
   Future<AppLocalizations> load(Locale locale) async {

lib/main.dart

@@ -22,11 +22,12 @@ import 'package:google_mobile_ads/google_mobile_ads.dart';
 import 'dart:io' show Platform;
 import 'dart:async' show unawaited;
 import 'utils/memory_manager.dart';
+import 'utils/logger.dart';
 import 'utils/performance_optimizer.dart';
 import 'navigator_key.dart';
 
 // AdMob 활성화 플래그 (개발 중 false, 프로덕션 시 true로 변경)
-const bool enableAdMob = false;
+const bool enableAdMob = true;
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -44,16 +45,23 @@ Future<void> main() async {
   try {
     // 메모리 이미지 캐시는 유지하지만 필요한 경우 삭제할 수 있도록 준비
 
-    // 오래된 디스크 캐시 파일만 지우기 (새로운 것은 유지)
+    // 캐시 전체 삭제는 큰 I/O 부하를 유발할 수 있어 비활성화
+    // 필요 시 환경 플래그로 제어하거나 주기적 백그라운드 정리로 전환하세요.
+    const bool clearCacheOnStartup = bool.fromEnvironment(
+      'CLEAR_CACHE_ON_STARTUP',
+      defaultValue: false,
+    );
+    if (clearCacheOnStartup) {
       await DefaultCacheManager().emptyCache();
+    }
 
     if (kDebugMode) {
-      print('이미지 캐시 관리 초기화 완료');
+      Log.d('이미지 캐시 관리 초기화 완료');
       PerformanceOptimizer.checkConstOptimization();
     }
   } catch (e) {
     if (kDebugMode) {
-      print('캐시 초기화 오류: $e');
+      Log.e('캐시 초기화 오류', e);
     }
   }
 

lib/navigation/app_navigation_observer.dart

@@ -37,7 +37,8 @@ class AppNavigationObserver extends NavigatorObserver {
     if (newRoute != null) {
       _updateNavigationState(newRoute);
     }
-    debugPrint('Navigation: Replace ${oldRoute?.settings.name} with ${newRoute?.settings.name}');
+    debugPrint(
+        'Navigation: Replace ${oldRoute?.settings.name} with ${newRoute?.settings.name}');
   }
 
   void _updateNavigationState(Route<dynamic> route) {
@@ -52,7 +53,8 @@ class AppNavigationObserver extends NavigatorObserver {
 
       try {
         final context = navigator!.context;
-        final navigationProvider = Provider.of<NavigationProvider>(context, listen: false);
+        final navigationProvider =
+            Provider.of<NavigationProvider>(context, listen: false);
         navigationProvider.updateByRoute(routeName);
       } catch (e) {
         debugPrint('Failed to update navigation state: $e');
@@ -69,7 +71,8 @@ class AppNavigationObserver extends NavigatorObserver {
 
       try {
         final context = navigator!.context;
-        final navigationProvider = Provider.of<NavigationProvider>(context, listen: false);
+        final navigationProvider =
+            Provider.of<NavigationProvider>(context, listen: false);
         navigationProvider.pop();
       } catch (e) {
         debugPrint('Failed to handle pop with provider: $e');

lib/providers/category_provider.dart

@@ -59,9 +59,17 @@ class CategoryProvider extends ChangeNotifier {
       {'name': 'storageCloud', 'color': '#2196F3', 'icon': 'cloud'},
       {'name': 'telecomInternetTv', 'color': '#00BCD4', 'icon': 'wifi'},
       {'name': 'lifestyle', 'color': '#4CAF50', 'icon': 'home'},
-      {'name': 'shoppingEcommerce', 'color': '#FF9800', 'icon': 'shopping_cart'},
+      {
+        'name': 'shoppingEcommerce',
+        'color': '#FF9800',
+        'icon': 'shopping_cart'
+      },
       {'name': 'programming', 'color': '#795548', 'icon': 'code'},
-      {'name': 'collaborationOffice', 'color': '#607D8B', 'icon': 'business_center'},
+      {
+        'name': 'collaborationOffice',
+        'color': '#607D8B',
+        'icon': 'business_center'
+      },
       {'name': 'aiService', 'color': '#673AB7', 'icon': 'smart_toy'},
       {'name': 'other', 'color': '#9E9E9E', 'icon': 'category'},
     ];

lib/providers/notification_provider.dart

@@ -270,7 +270,8 @@ class NotificationProvider extends ChangeNotifier {
   // 첫 권한 부여 시 기본 설정 초기화
   Future<void> initializeDefaultSettingsOnFirstPermission() async {
     try {
-      final firstGranted = await _secureStorage.read(key: _firstPermissionGrantedKey);
+      final firstGranted =
+          await _secureStorage.read(key: _firstPermissionGrantedKey);
       if (firstGranted != 'true') {
         // 첫 권한 부여 시 기본값 설정
         await setReminderDays(2); // 2일 전 알림
@@ -278,7 +279,8 @@ class NotificationProvider extends ChangeNotifier {
         await setPaymentEnabled(true); // 결제 예정 알림 활성화
 
         // 첫 권한 부여 플래그 저장
-        await _secureStorage.write(key: _firstPermissionGrantedKey, value: 'true');
+        await _secureStorage.write(
+            key: _firstPermissionGrantedKey, value: 'true');
       }
     } catch (e) {
       debugPrint('기본 설정 초기화 중 오류 발생: $e');

lib/providers/subscription_provider.dart

@@ -28,10 +28,11 @@ class SubscriptionProvider extends ChangeNotifier {
         final price = subscription.currentPrice;
         if (subscription.currency == 'USD') {
           debugPrint('[SubscriptionProvider] ${subscription.serviceName}: '
-              '\$${price} × ₩$rate = ₩${price * rate}');
+              '\$$price × ₩$rate = ₩${price * rate}');
           return sum + (price * rate);
         }
-        debugPrint('[SubscriptionProvider] ${subscription.serviceName}: ₩$price');
+        debugPrint(
+            '[SubscriptionProvider] ${subscription.serviceName}: ₩$price');
         return sum + price;
       },
     );
@@ -191,7 +192,6 @@ class SubscriptionProvider extends ChangeNotifier {
     }
   }
 
-
   Future<void> clearAllSubscriptions() async {
     _isLoading = true;
     notifyListeners();
@@ -217,7 +217,8 @@ class SubscriptionProvider extends ChangeNotifier {
   }
 
   /// 이벤트 종료 알림을 스케줄링합니다.
-  Future<void> _scheduleEventEndNotification(SubscriptionModel subscription) async {
+  Future<void> _scheduleEventEndNotification(
+      SubscriptionModel subscription) async {
     if (subscription.eventEndDate != null &&
         subscription.eventEndDate!.isAfter(DateTime.now())) {
       await NotificationService.scheduleNotification(
@@ -238,7 +239,6 @@ class SubscriptionProvider extends ChangeNotifier {
       if (subscription.isEventActive &&
           subscription.eventEndDate != null &&
           subscription.eventEndDate!.isBefore(DateTime.now())) {
-        
         subscription.isEventActive = false;
         await _subscriptionBox.put(subscription.id, subscription);
         hasChanges = true;
@@ -255,9 +255,8 @@ class SubscriptionProvider extends ChangeNotifier {
     if (_subscriptions.isEmpty) return 0.0;
 
     // locale이 제공되지 않으면 현재 로케일 사용
-    final targetCurrency = locale != null 
+    final targetCurrency =
-        ? CurrencyUtil.getDefaultCurrency(locale)
+        locale != null ? CurrencyUtil.getDefaultCurrency(locale) : 'KRW'; // 기본값
-        : 'KRW'; // 기본값
 
     debugPrint('[calculateTotalExpense] 계산 시작 - 타겟 통화: $targetCurrency');
     double total = 0.0;
@@ -265,7 +264,7 @@ class SubscriptionProvider extends ChangeNotifier {
     for (final subscription in _subscriptions) {
       final currentPrice = subscription.currentPrice;
       debugPrint('[calculateTotalExpense] ${subscription.serviceName}: '
-          '${currentPrice} ${subscription.currency} (이벤트 적용: ${subscription.isCurrentlyInEvent})');
+          '$currentPrice ${subscription.currency} (이벤트 적용: ${subscription.isCurrentlyInEvent})');
 
       final converted = await ExchangeRateService().convertBetweenCurrencies(
         currentPrice,
@@ -281,14 +280,14 @@ class SubscriptionProvider extends ChangeNotifier {
   }
 
   /// 최근 6개월의 월별 지출 데이터를 반환합니다. (로케일별 기본 통화로 환산)
-  Future<List<Map<String, dynamic>>> getMonthlyExpenseData({String? locale}) async {
+  Future<List<Map<String, dynamic>>> getMonthlyExpenseData(
+      {String? locale}) async {
     final now = DateTime.now();
     final List<Map<String, dynamic>> monthlyData = [];
 
     // locale이 제공되지 않으면 현재 로케일 사용
-    final targetCurrency = locale != null 
+    final targetCurrency =
-        ? CurrencyUtil.getDefaultCurrency(locale)
+        locale != null ? CurrencyUtil.getDefaultCurrency(locale) : 'KRW'; // 기본값
-        : 'KRW'; // 기본값
 
     // 최근 6개월 데이터 생성
     for (int i = 5; i >= 0; i--) {
@@ -296,10 +295,12 @@ class SubscriptionProvider extends ChangeNotifier {
       double monthTotal = 0.0;
 
       // 현재 월인지 확인
-      final isCurrentMonth = (month.year == now.year && month.month == now.month);
+      final isCurrentMonth =
+          (month.year == now.year && month.month == now.month);
 
       if (isCurrentMonth) {
-        debugPrint('[getMonthlyExpenseData] 현재 월(${month.year}-${month.month}) 계산 중...');
+        debugPrint(
+            '[getMonthlyExpenseData] 현재 월(${month.year}-${month.month}) 계산 중...');
       }
 
       // 해당 월에 활성화된 구독 계산
@@ -307,11 +308,13 @@ class SubscriptionProvider extends ChangeNotifier {
         if (isCurrentMonth) {
           // 현재 월인 경우: 모든 활성 구독 포함 (calculateTotalExpense와 동일하게)
           final cost = subscription.currentPrice;
-          debugPrint('[getMonthlyExpenseData] 현재 월 - ${subscription.serviceName}: '
+          debugPrint(
-              '${cost} ${subscription.currency} (이벤트 적용: ${subscription.isCurrentlyInEvent})');
+              '[getMonthlyExpenseData] 현재 월 - ${subscription.serviceName}: '
+              '$cost ${subscription.currency} (이벤트 적용: ${subscription.isCurrentlyInEvent})');
 
           // 통화 변환
-          final converted = await ExchangeRateService().convertBetweenCurrencies(
+          final converted =
+              await ExchangeRateService().convertBetweenCurrencies(
             cost,
             subscription.currency,
             targetCurrency,
@@ -325,7 +328,8 @@ class SubscriptionProvider extends ChangeNotifier {
             Duration(days: _getBillingCycleDays(subscription.billingCycle)),
           );
 
-          if (subscriptionStartDate.isBefore(DateTime(month.year, month.month + 1, 1)) &&
+          if (subscriptionStartDate
+                  .isBefore(DateTime(month.year, month.month + 1, 1)) &&
               subscription.nextBillingDate.isAfter(month)) {
             // 해당 월의 비용 계산 (이벤트 가격 고려)
             double cost;
@@ -334,7 +338,8 @@ class SubscriptionProvider extends ChangeNotifier {
                 subscription.eventStartDate != null &&
                 subscription.eventEndDate != null &&
                 // 이벤트 기간과 해당 월이 겹치는지 확인
-                subscription.eventStartDate!.isBefore(DateTime(month.year, month.month + 1, 1)) &&
+                subscription.eventStartDate!
+                    .isBefore(DateTime(month.year, month.month + 1, 1)) &&
                 subscription.eventEndDate!.isAfter(month)) {
               cost = subscription.eventPrice ?? subscription.monthlyCost;
             } else {
@@ -342,7 +347,8 @@ class SubscriptionProvider extends ChangeNotifier {
             }
 
             // 통화 변환
-            final converted = await ExchangeRateService().convertBetweenCurrencies(
+            final converted =
+                await ExchangeRateService().convertBetweenCurrencies(
               cost,
               subscription.currency,
               targetCurrency,
@@ -354,7 +360,8 @@ class SubscriptionProvider extends ChangeNotifier {
       }
 
       if (isCurrentMonth) {
-        debugPrint('[getMonthlyExpenseData] 현재 월(${_getMonthLabel(month, locale ?? 'en')}) 총 지출: $monthTotal $targetCurrency');
+        debugPrint(
+            '[getMonthlyExpenseData] 현재 월(${_getMonthLabel(month, locale ?? 'en')}) 총 지출: $monthTotal $targetCurrency');
       }
 
       monthlyData.add({
@@ -431,10 +438,12 @@ class SubscriptionProvider extends ChangeNotifier {
             serviceName.contains('티빙') ||
             serviceName.contains('디즈니') ||
             serviceName.contains('넷플릭스')) {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'OTT 서비스',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
         // 음악 서비스
         else if (serviceName.contains('spotify') ||
@@ -443,30 +452,36 @@ class SubscriptionProvider extends ChangeNotifier {
             serviceName.contains('지니') ||
             serviceName.contains('플로') ||
             serviceName.contains('벡스')) {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'music',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
         // AI 서비스
         else if (serviceName.contains('chatgpt') ||
             serviceName.contains('claude') ||
             serviceName.contains('midjourney') ||
             serviceName.contains('copilot')) {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'aiService',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
         // 프로그래밍/개발
         else if (serviceName.contains('github') ||
             serviceName.contains('intellij') ||
             serviceName.contains('webstorm') ||
             serviceName.contains('jetbrains')) {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'programming',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
         // 오피스/협업 툴
         else if (serviceName.contains('notion') ||
@@ -476,31 +491,34 @@ class SubscriptionProvider extends ChangeNotifier {
             serviceName.contains('figma') ||
             serviceName.contains('icloud') ||
             serviceName.contains('아이클라우드')) {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'collaborationOffice',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
         // 기타 서비스 (기본값)
         else {
-          categoryId = categories.firstWhere(
+          categoryId = categories
+              .firstWhere(
                 (cat) => cat.name == 'other',
                 orElse: () => categories.first,
-          ).id;
+              )
+              .id;
         }
 
-        if (categoryId != null) {
         subscription.categoryId = categoryId;
         await subscription.save();
         migratedCount++;
-          final categoryName = categories.firstWhere((cat) => cat.id == categoryId).name;
+        final categoryName =
+            categories.firstWhere((cat) => cat.id == categoryId).name;
         debugPrint('✅ ${subscription.serviceName} → $categoryName');
       }
     }
-    }
 
     if (migratedCount > 0) {
-      debugPrint('❎ 총 ${migratedCount}개의 구독에 categoryId 할당 완료');
+      debugPrint('❎ 총 $migratedCount개의 구독에 categoryId 할당 완료');
       await refreshSubscriptions();
     } else {
       debugPrint('❎ 모든 구독이 이미 categoryId를 가지고 있습니다');

lib/routes/app_routes.dart

@@ -6,6 +6,7 @@ import 'package:submanager/screens/sms_scan_screen.dart';
 import 'package:submanager/screens/analysis_screen.dart';
 import 'package:submanager/screens/settings_screen.dart';
 import 'package:submanager/screens/splash_screen.dart';
+import 'package:submanager/screens/sms_permission_screen.dart';
 import 'package:submanager/models/subscription_model.dart';
 
 class AppRoutes {
@@ -16,6 +17,7 @@ class AppRoutes {
   static const String smsScanner = '/sms-scanner';
   static const String analysis = '/analysis';
   static const String settings = '/settings';
+  static const String smsPermission = '/sms-permission';
 
   static Map<String, WidgetBuilder> getRoutes() {
     return {
@@ -25,6 +27,7 @@ class AppRoutes {
       smsScanner: (context) => const SmsScanScreen(),
       analysis: (context) => const AnalysisScreen(),
       settings: (context) => const SettingsScreen(),
+      smsPermission: (context) => const SmsPermissionScreen(),
     };
   }
 
@@ -42,7 +45,8 @@ class AppRoutes {
       case subscriptionDetail:
         final subscription = routeSettings.arguments as SubscriptionModel?;
         if (subscription != null) {
-          return _buildRoute(DetailScreen(subscription: subscription), routeSettings);
+          return _buildRoute(
+              DetailScreen(subscription: subscription), routeSettings);
         }
         return _errorRoute();
 
@@ -55,6 +59,9 @@ class AppRoutes {
       case settings:
         return _buildRoute(const SettingsScreen(), routeSettings);
 
+      case smsPermission:
+        return _buildRoute(const SmsPermissionScreen(), routeSettings);
+
       default:
         return _errorRoute();
     }
@@ -77,15 +84,18 @@ class AppRoutes {
     );
   }
 
-  static void navigateTo(BuildContext context, String routeName, {Object? arguments}) {
+  static void navigateTo(BuildContext context, String routeName,
+      {Object? arguments}) {
     Navigator.pushNamed(context, routeName, arguments: arguments);
   }
 
-  static void navigateAndReplace(BuildContext context, String routeName, {Object? arguments}) {
+  static void navigateAndReplace(BuildContext context, String routeName,
+      {Object? arguments}) {
     Navigator.pushReplacementNamed(context, routeName, arguments: arguments);
   }
 
-  static void navigateAndRemoveUntil(BuildContext context, String routeName, {Object? arguments}) {
+  static void navigateAndRemoveUntil(BuildContext context, String routeName,
+      {Object? arguments}) {
     Navigator.pushNamedAndRemoveUntil(
       context,
       routeName,

lib/screens/analysis_screen.dart

@@ -48,7 +48,9 @@ class _AnalysisScreenState extends State<AnalysisScreen>
         '현재 해시=$currentHash, 이전 해시=$_lastDataHash, 로딩중=$_isLoading');
 
     // 데이터가 변경되었고 현재 로딩 중이 아닌 경우에만 리로드
-    if (currentHash != _lastDataHash && !_isLoading && _lastDataHash.isNotEmpty) {
+    if (currentHash != _lastDataHash &&
+        !_isLoading &&
+        _lastDataHash.isNotEmpty) {
       debugPrint('[AnalysisScreen] 데이터 변경 감지됨, 리로드 시작');
       _loadData();
     }
@@ -71,7 +73,8 @@ class _AnalysisScreenState extends State<AnalysisScreen>
     buffer.write(provider.totalMonthlyExpense.toStringAsFixed(2));
 
     for (final sub in subscriptions) {
-      buffer.write('_${sub.id}_${sub.currentPrice.toStringAsFixed(2)}_${sub.currency}');
+      buffer.write(
+          '_${sub.id}_${sub.currentPrice.toStringAsFixed(2)}_${sub.currency}');
     }
 
     return buffer.toString();
@@ -166,7 +169,7 @@ class _AnalysisScreenState extends State<AnalysisScreen>
 
         // 2. 총 지출 요약 카드
         TotalExpenseSummaryCard(
-          key: ValueKey('total_expense_${_lastDataHash}'),
+          key: ValueKey('total_expense_$_lastDataHash'),
           subscriptions: subscriptions,
           totalExpense: _totalExpense,
           animationController: _animationController,
@@ -176,7 +179,7 @@ class _AnalysisScreenState extends State<AnalysisScreen>
 
         // 3. 월별 지출 차트
         MonthlyExpenseChartCard(
-          key: ValueKey('monthly_expense_${_lastDataHash}'),
+          key: ValueKey('monthly_expense_$_lastDataHash'),
           monthlyData: _monthlyData,
           animationController: _animationController,
         ),

lib/screens/app_lock_screen.dart

@@ -13,13 +13,13 @@ class AppLockScreen extends StatelessWidget {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(
+            const Icon(
               Icons.lock_outline,
               size: 80,
               color: AppColors.navyGray,
             ),
             const SizedBox(height: 24),
-            Text(
+            const Text(
               '앱이 잠겨 있습니다',
               style: TextStyle(
                 fontSize: 24,
@@ -28,7 +28,7 @@ class AppLockScreen extends StatelessWidget {
               ),
             ),
             const SizedBox(height: 16),
-            Text(
+            const Text(
               '생체 인증으로 잠금을 해제하세요',
               style: TextStyle(
                 fontSize: 16,
@@ -42,7 +42,7 @@ class AppLockScreen extends StatelessWidget {
                 final success = await appLock.authenticate();
                 if (!success && context.mounted) {
                   ScaffoldMessenger.of(context).showSnackBar(
-                    SnackBar(
+                    const SnackBar(
                       content: Text(
                         '인증에 실패했습니다. 다시 시도해주세요.',
                         style: TextStyle(

lib/screens/category_management_screen.dart

@@ -43,7 +43,7 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text(
+        title: const Text(
           '카테고리 관리',
           style: TextStyle(
             color: AppColors.pureWhite,
@@ -66,7 +66,7 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                       children: [
                         TextFormField(
                           controller: _nameController,
-                          decoration: InputDecoration(
+                          decoration: const InputDecoration(
                             labelText: '카테고리 이름',
                             labelStyle: TextStyle(
                               color: AppColors.navyGray,
@@ -82,7 +82,7 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                         const SizedBox(height: 16),
                         DropdownButtonFormField<String>(
                           value: _selectedColor,
-                          decoration: InputDecoration(
+                          decoration: const InputDecoration(
                             labelText: '색상 선택',
                             labelStyle: TextStyle(
                               color: AppColors.navyGray,
@@ -90,15 +90,35 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                           ),
                           items: [
                             DropdownMenuItem(
-                                value: '#1976D2', child: Text(AppLocalizations.of(context).colorBlue, style: TextStyle(color: AppColors.darkNavy))),
+                                value: '#1976D2',
+                                child: Text(
+                                    AppLocalizations.of(context).colorBlue,
+                                    style: const TextStyle(
+                                        color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: '#4CAF50', child: Text(AppLocalizations.of(context).colorGreen, style: TextStyle(color: AppColors.darkNavy))),
+                                value: '#4CAF50',
+                                child: Text(
+                                    AppLocalizations.of(context).colorGreen,
+                                    style: const TextStyle(
+                                        color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: '#FF9800', child: Text(AppLocalizations.of(context).colorOrange, style: TextStyle(color: AppColors.darkNavy))),
+                                value: '#FF9800',
+                                child: Text(
+                                    AppLocalizations.of(context).colorOrange,
+                                    style: const TextStyle(
+                                        color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: '#F44336', child: Text(AppLocalizations.of(context).colorRed, style: TextStyle(color: AppColors.darkNavy))),
+                                value: '#F44336',
+                                child: Text(
+                                    AppLocalizations.of(context).colorRed,
+                                    style: const TextStyle(
+                                        color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: '#9C27B0', child: Text(AppLocalizations.of(context).colorPurple, style: TextStyle(color: AppColors.darkNavy))),
+                                value: '#9C27B0',
+                                child: Text(
+                                    AppLocalizations.of(context).colorPurple,
+                                    style: const TextStyle(
+                                        color: AppColors.darkNavy))),
                           ],
                           onChanged: (value) {
                             setState(() {
@@ -109,22 +129,38 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                         const SizedBox(height: 16),
                         DropdownButtonFormField<String>(
                           value: _selectedIcon,
-                          decoration: InputDecoration(
+                          decoration: const InputDecoration(
                             labelText: '아이콘 선택',
                             labelStyle: TextStyle(
                               color: AppColors.navyGray,
                             ),
                           ),
-                          items: [
+                          items: const [
                             DropdownMenuItem(
-                                value: 'subscriptions', child: Text('구독', style: TextStyle(color: AppColors.darkNavy))),
+                                value: 'subscriptions',
-                            DropdownMenuItem(value: 'movie', child: Text('영화', style: TextStyle(color: AppColors.darkNavy))),
+                                child: Text('구독',
+                                    style:
+                                        TextStyle(color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: 'music_note', child: Text('음악', style: TextStyle(color: AppColors.darkNavy))),
+                                value: 'movie',
+                                child: Text('영화',
+                                    style:
+                                        TextStyle(color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: 'fitness_center', child: Text('운동', style: TextStyle(color: AppColors.darkNavy))),
+                                value: 'music_note',
+                                child: Text('음악',
+                                    style:
+                                        TextStyle(color: AppColors.darkNavy))),
                             DropdownMenuItem(
-                                value: 'shopping_cart', child: Text('쇼핑', style: TextStyle(color: AppColors.darkNavy))),
+                                value: 'fitness_center',
+                                child: Text('운동',
+                                    style:
+                                        TextStyle(color: AppColors.darkNavy))),
+                            DropdownMenuItem(
+                                value: 'shopping_cart',
+                                child: Text('쇼핑',
+                                    style:
+                                        TextStyle(color: AppColors.darkNavy))),
                           ],
                           onChanged: (value) {
                             setState(() {
@@ -135,7 +171,7 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                         const SizedBox(height: 16),
                         ElevatedButton(
                           onPressed: _addCategory,
-                          child: Text(
+                          child: const Text(
                             '카테고리 추가',
                             style: TextStyle(
                               color: AppColors.pureWhite,
@@ -163,8 +199,9 @@ class _CategoryManagementScreenState extends State<CategoryManagementScreen> {
                             int.parse(category.color.replaceAll('#', '0xFF'))),
                       ),
                       title: Text(
-                        provider.getLocalizedCategoryName(context, category.name),
+                        provider.getLocalizedCategoryName(
-                        style: TextStyle(
+                            context, category.name),
+                        style: const TextStyle(
                           color: AppColors.darkNavy,
                         ),
                       ),

lib/screens/detail_screen.dart

@@ -43,7 +43,6 @@ class _DetailScreenState extends State<DetailScreen>
     super.dispose();
   }
 
-
   @override
   Widget build(BuildContext context) {
     final baseColor = _controller.getCardColor();
@@ -110,8 +109,9 @@ class _DetailScreenState extends State<DetailScreen>
                           ),
                           const Spacer(),
                           Text(
-                          AppLocalizations.of(context).changesAppliedAfterSave,
+                            AppLocalizations.of(context)
-                          style: TextStyle(
+                                .changesAppliedAfterSave,
+                            style: const TextStyle(
                               fontSize: 14,
                               color: AppColors.darkNavy,
                             ),

lib/screens/main_screen.dart

@@ -236,7 +236,11 @@ class _MainScreenState extends State<MainScreen>
       body: IndexedStack(
         index: PlatformHelper.isIOS
             ? (currentIndex == 3 ? 3 : currentIndex) // iOS: 설정화면은 인덱스 3
-          : (currentIndex == 3 ? 3 : currentIndex == 4 ? 4 : currentIndex), // Android: 기존 로직
+            : (currentIndex == 3
+                ? 3
+                : currentIndex == 4
+                    ? 4
+                    : currentIndex), // Android: 기존 로직
         children: _screens,
       ),
       backgroundGradient: backgroundGradient,

lib/screens/settings_screen.dart

@@ -5,13 +5,14 @@ import '../providers/notification_provider.dart';
 import 'dart:io';
 import '../services/notification_service.dart';
 import 'package:url_launcher/url_launcher.dart';
-import '../theme/adaptive_theme.dart';
 import '../widgets/glassmorphism_card.dart';
 import '../theme/app_colors.dart';
 import '../widgets/native_ad_widget.dart';
 import '../widgets/common/snackbar/app_snackbar.dart';
 import '../l10n/app_localizations.dart';
 import '../providers/locale_provider.dart';
+import 'package:permission_handler/permission_handler.dart' as permission;
+import '../services/sms_service.dart';
 
 class SettingsScreen extends StatelessWidget {
   const SettingsScreen({super.key});
@@ -228,6 +229,7 @@ class SettingsScreen extends StatelessWidget {
                               if (granted) {
                                 await provider.setEnabled(true);
                               } else {
+                                if (!context.mounted) return;
                                 AppSnackBar.showError(
                                   context: context,
                                   message: AppLocalizations.of(context)
@@ -271,7 +273,7 @@ class SettingsScreen extends StatelessWidget {
                                     elevation: 0,
                                     color: Theme.of(context)
                                         .colorScheme
-                                        .surfaceVariant
+                                        .surfaceContainerHighest
                                         .withValues(alpha: 0.3),
                                     shape: RoundedRectangleBorder(
                                       borderRadius: BorderRadius.circular(12),
@@ -412,7 +414,7 @@ class SettingsScreen extends StatelessWidget {
                                                 decoration: BoxDecoration(
                                                   color: Theme.of(context)
                                                       .colorScheme
-                                                      .surfaceVariant
+                                                      .surfaceContainerHighest
                                                       .withValues(alpha: 0.3),
                                                   borderRadius:
                                                       BorderRadius.circular(8),
@@ -476,6 +478,89 @@ class SettingsScreen extends StatelessWidget {
                 ),
               ),
 
+              // SMS 권한 설정
+              if (!kIsWeb && Platform.isAndroid)
+                GlassmorphismCard(
+                  margin:
+                      const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+                  padding: const EdgeInsets.all(8),
+                  child: FutureBuilder<permission.PermissionStatus>(
+                    future: permission.Permission.sms.status,
+                    builder: (context, snapshot) {
+                      final isLoading =
+                          snapshot.connectionState == ConnectionState.waiting;
+                      final status = snapshot.data;
+                      final hasPermission = status?.isGranted ?? false;
+                      final isPermanentlyDenied =
+                          status?.isPermanentlyDenied ?? false;
+
+                      return ListTile(
+                        leading: const Icon(
+                          Icons.sms,
+                          color: AppColors.textSecondary,
+                        ),
+                        title: Text(
+                          AppLocalizations.of(context).smsPermissionLabel,
+                          style: const TextStyle(color: AppColors.textPrimary),
+                        ),
+                        subtitle: !hasPermission
+                            ? Text(
+                                isPermanentlyDenied
+                                    ? AppLocalizations.of(context)
+                                        .permanentlyDeniedMessage
+                                    : AppLocalizations.of(context)
+                                        .smsPermissionRequired,
+                                style: const TextStyle(
+                                    color: AppColors.textSecondary),
+                              )
+                            : null,
+                        trailing: isLoading
+                            ? const SizedBox(
+                                width: 20,
+                                height: 20,
+                                child:
+                                    CircularProgressIndicator(strokeWidth: 2),
+                              )
+                            : hasPermission
+                                ? const Padding(
+                                    padding:
+                                        EdgeInsets.symmetric(horizontal: 8.0),
+                                    child: Icon(Icons.check_circle,
+                                        color: Colors.green),
+                                  )
+                                : isPermanentlyDenied
+                                    ? TextButton(
+                                        onPressed: () async {
+                                          await permission.openAppSettings();
+                                        },
+                                        child: Text(AppLocalizations.of(context)
+                                            .openSettings),
+                                      )
+                                    : ElevatedButton(
+                                        onPressed: () async {
+                                          final granted = await SMSService
+                                              .requestSMSPermission();
+                                          if (!granted) {
+                                            final newStatus = await permission
+                                                .Permission.sms.status;
+                                            if (newStatus.isPermanentlyDenied) {
+                                              await permission
+                                                  .openAppSettings();
+                                            }
+                                          }
+                                          if (context.mounted) {
+                                            (context as Element)
+                                                .markNeedsBuild();
+                                          }
+                                        },
+                                        child: Text(AppLocalizations.of(context)
+                                            .requestPermission),
+                                      ),
+                      );
+                    },
+                  ),
+                ),
+
               // 앱 정보
               GlassmorphismCard(
                 margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),

lib/screens/sms_permission_screen.dart

@@ -0,0 +1,151 @@
+import 'package:flutter/material.dart';
+import 'package:permission_handler/permission_handler.dart' as permission;
+import '../theme/app_colors.dart';
+import '../widgets/glassmorphism_card.dart';
+import '../routes/app_routes.dart';
+import '../l10n/app_localizations.dart';
+import '../services/sms_service.dart';
+import '../utils/platform_helper.dart';
+
+class SmsPermissionScreen extends StatefulWidget {
+  const SmsPermissionScreen({super.key});
+
+  @override
+  State<SmsPermissionScreen> createState() => _SmsPermissionScreenState();
+}
+
+class _SmsPermissionScreenState extends State<SmsPermissionScreen> {
+  bool _requesting = false;
+
+  Future<void> _handleRequest() async {
+    if (_requesting) return;
+    setState(() => _requesting = true);
+
+    try {
+      if (!PlatformHelper.isAndroid) {
+        // iOS/Web은 권한 흐름 없이 메인으로 이동
+        if (mounted) {
+          Navigator.of(context).pushReplacementNamed(AppRoutes.main);
+        }
+        return;
+      }
+
+      final status = await permission.Permission.sms.status;
+      if (status.isGranted) {
+        if (mounted) {
+          Navigator.of(context).pushReplacementNamed(AppRoutes.main);
+        }
+        return;
+      }
+
+      // 권한 요청
+      final granted = await SMSService.requestSMSPermission();
+      if (mounted) {
+        if (granted) {
+          Navigator.of(context).pushReplacementNamed(AppRoutes.main);
+        } else {
+          final newStatus = await permission.Permission.sms.status;
+          if (newStatus.isPermanentlyDenied) {
+            // 설정 열기 유도
+            _showSettingsDialog();
+          }
+          // 거부지만 영구 거부가 아니라면 그대로 대기 (사용자가 다시 시도 가능)
+        }
+      }
+    } finally {
+      if (mounted) setState(() => _requesting = false);
+    }
+  }
+
+  void _showSettingsDialog() {
+    final loc = AppLocalizations.of(context);
+    showDialog(
+      context: context,
+      builder: (_) => AlertDialog(
+        title: Text(loc.smsPermissionRequired),
+        content: Text(loc.permanentlyDeniedMessage),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: Text(AppLocalizations.of(context).cancel),
+          ),
+          TextButton(
+            onPressed: () async {
+              await permission.openAppSettings();
+              if (mounted) Navigator.of(context).pop();
+            },
+            child: Text(loc.openSettings),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final loc = AppLocalizations.of(context);
+    return Scaffold(
+      body: SafeArea(
+        child: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const Icon(Icons.sms, size: 64, color: AppColors.primaryColor),
+                const SizedBox(height: 16),
+                Text(
+                  loc.smsPermissionTitle,
+                  style: Theme.of(context).textTheme.headlineSmall?.copyWith(
+                        color: AppColors.textPrimary,
+                        fontWeight: FontWeight.bold,
+                      ),
+                ),
+                const SizedBox(height: 8),
+                Text(
+                  loc.smsPermissionRequired,
+                  textAlign: TextAlign.center,
+                  style: const TextStyle(color: AppColors.textSecondary),
+                ),
+                const SizedBox(height: 16),
+                GlassmorphismCard(
+                  padding: const EdgeInsets.all(16),
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(loc.smsPermissionReasonTitle,
+                          style: const TextStyle(fontWeight: FontWeight.bold)),
+                      const SizedBox(height: 8),
+                      Text(loc.smsPermissionReasonBody),
+                      const SizedBox(height: 12),
+                      Text(loc.smsPermissionScopeTitle,
+                          style: const TextStyle(fontWeight: FontWeight.bold)),
+                      const SizedBox(height: 8),
+                      Text(loc.smsPermissionScopeBody),
+                    ],
+                  ),
+                ),
+                const SizedBox(height: 24),
+                SizedBox(
+                  width: double.infinity,
+                  child: ElevatedButton.icon(
+                    onPressed: _requesting ? null : _handleRequest,
+                    icon: const Icon(Icons.lock_open),
+                    label: Text(
+                        _requesting ? loc.requesting : loc.requestPermission),
+                  ),
+                ),
+                const SizedBox(height: 8),
+                TextButton(
+                  onPressed: () => Navigator.of(context)
+                      .pushReplacementNamed(AppRoutes.main),
+                  child: Text(loc.later),
+                )
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/screens/sms_scan_screen.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
 import '../controllers/sms_scan_controller.dart';
 import '../widgets/sms_scan/scan_loading_widget.dart';
 import '../widgets/sms_scan/scan_initial_widget.dart';
@@ -75,7 +74,8 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
       );
     }
 
-    final currentSubscription = _controller.scannedSubscriptions[_controller.currentIndex];
+    final currentSubscription =
+        _controller.scannedSubscriptions[_controller.currentIndex];
 
     return Column(
       crossAxisAlignment: CrossAxisAlignment.stretch,

lib/screens/splash_screen.dart

@@ -2,6 +2,8 @@ import 'dart:async';
 import 'dart:ui';
 import 'package:flutter/material.dart';
 import '../theme/app_colors.dart';
+import '../services/sms_service.dart';
+import '../utils/platform_helper.dart';
 import '../routes/app_routes.dart';
 import '../l10n/app_localizations.dart';
 
@@ -98,9 +100,20 @@ class _SplashScreenState extends State<SplashScreen>
     }
   }
 
-  void navigateToNextScreen() {
+  Future<void> navigateToNextScreen() async {
-    // 앱 잠금 기능 비활성화: 항상 MainScreen으로 이동
+    // Android에서 SMS 권한이 없으면 권한 안내 화면으로 이동
-    // 모든 이전 라우트를 제거하고 홈으로 이동
+    if (PlatformHelper.isAndroid) {
+      final hasPermission = await SMSService.hasSMSPermission();
+      if (!hasPermission && mounted) {
+        Navigator.of(context).pushNamedAndRemoveUntil(
+          AppRoutes.smsPermission,
+          (route) => false,
+        );
+        return;
+      }
+    }
+
+    if (!mounted) return;
     Navigator.of(context).pushNamedAndRemoveUntil(
       AppRoutes.main,
       (route) => false,
@@ -264,13 +277,13 @@ class _SplashScreenState extends State<SplashScreen>
                                                       .withValues(alpha: 0.3),
                                                   width: 1.5,
                                                 ),
-                                                boxShadow: [
+                                                boxShadow: const [
                                                   BoxShadow(
                                                     color:
                                                         AppColors.shadowBlack,
                                                     spreadRadius: 0,
                                                     blurRadius: 30,
-                                                    offset: const Offset(0, 10),
+                                                    offset: Offset(0, 10),
                                                   ),
                                                 ],
                                               ),
@@ -385,7 +398,7 @@ class _SplashScreenState extends State<SplashScreen>
                                       width: 1,
                                     ),
                                   ),
-                                  child: CircularProgressIndicator(
+                                  child: const CircularProgressIndicator(
                                     valueColor: AlwaysStoppedAnimation<Color>(
                                         AppColors.pureWhite),
                                     strokeWidth: 3,

lib/services/currency_util.dart

@@ -89,9 +89,11 @@ class CurrencyUtil {
 
     // USD 입력인 경우 - 기본 통화로 변환하여 표시
     if (currency == 'USD' && defaultCurrency != 'USD') {
-      final convertedAmount = await _exchangeRateService.convertUsdToTarget(amount, defaultCurrency);
+      final convertedAmount = await _exchangeRateService.convertUsdToTarget(
+          amount, defaultCurrency);
       if (convertedAmount != null) {
-        final primaryFormatted = _formatSingleCurrency(convertedAmount, defaultCurrency);
+        final primaryFormatted =
+            _formatSingleCurrency(convertedAmount, defaultCurrency);
         final usdFormatted = _formatSingleCurrency(amount, 'USD');
         return '$primaryFormatted ($usdFormatted)';
       }

lib/services/exchange_rate_service.dart

@@ -1,6 +1,7 @@
 import 'package:http/http.dart' as http;
 import 'dart:convert';
 import 'package:intl/intl.dart';
+import '../utils/logger.dart';
 
 /// 환율 정보 서비스 클래스
 class ExchangeRateService {
@@ -21,12 +22,20 @@ class ExchangeRateService {
   double? _usdToCnyRate;
   DateTime? _lastUpdated;
 
-  // API 요청 URL (ExchangeRate-API 사용)
+  // API 요청 URL (ExchangeRate-API 등) - 빌드 타임 오버라이드 가능
-  final String _apiUrl = 'https://api.exchangerate-api.com/v4/latest/USD';
+  static const String _defaultApiUrl =
+      'https://api.exchangerate-api.com/v4/latest/USD';
+  final String _apiUrl = const String.fromEnvironment(
+    'EXCHANGE_RATE_API_URL',
+    defaultValue: _defaultApiUrl,
+  );
 
   // 기본 환율 상수
+  // ignore: constant_identifier_names
   static const double DEFAULT_USD_TO_KRW_RATE = 1350.0;
+  // ignore: constant_identifier_names
   static const double DEFAULT_USD_TO_JPY_RATE = 150.0;
+  // ignore: constant_identifier_names
   static const double DEFAULT_USD_TO_CNY_RATE = 7.2;
 
   // 캐싱된 환율 반환 (동기적)
@@ -44,18 +53,26 @@ class ExchangeRateService {
     }
 
     try {
-      // API 요청
+      // API 요청 (네트워크 불가 환경에서는 예외 발생 가능)
       final response = await http.get(Uri.parse(_apiUrl));
 
       if (response.statusCode == 200) {
         final data = json.decode(response.body);
-        _usdToKrwRate = data['rates']['KRW']?.toDouble();
+        _usdToKrwRate = (data['rates']['KRW'] as num?)?.toDouble();
-        _usdToJpyRate = data['rates']['JPY']?.toDouble();
+        _usdToJpyRate = (data['rates']['JPY'] as num?)?.toDouble();
-        _usdToCnyRate = data['rates']['CNY']?.toDouble();
+        _usdToCnyRate = (data['rates']['CNY'] as num?)?.toDouble();
         _lastUpdated = DateTime.now();
+        Log.d(
+            '환율 갱신 완료: USD→KRW=$_usdToKrwRate, JPY=$_usdToJpyRate, CNY=$_usdToCnyRate');
+        return;
+      } else {
+        Log.w(
+            '환율 API 응답 코드: ${response.statusCode} (${response.reasonPhrase})');
       }
-    } catch (e) {
+    } catch (e, st) {
-      // 오류 발생 시 기본값 사용
+      // 네트워크 실패 시 캐시/기본값 폴백
+      Log.w('환율 API 요청 실패. 캐시/기본값 사용');
+      Log.e('환율 API 에러', e, st);
     }
   }
 
@@ -75,7 +92,8 @@ class ExchangeRateService {
   }
 
   /// USD 금액을 지정된 통화로 변환합니다.
-  Future<double?> convertUsdToTarget(double usdAmount, String targetCurrency) async {
+  Future<double?> convertUsdToTarget(
+      double usdAmount, String targetCurrency) async {
     await _fetchAllRatesIfNeeded();
 
     switch (targetCurrency) {
@@ -96,7 +114,8 @@ class ExchangeRateService {
   }
 
   /// 지정된 통화를 USD로 변환합니다.
-  Future<double?> convertTargetToUsd(double amount, String sourceCurrency) async {
+  Future<double?> convertTargetToUsd(
+      double amount, String sourceCurrency) async {
     await _fetchAllRatesIfNeeded();
 
     switch (sourceCurrency) {
@@ -118,10 +137,7 @@ class ExchangeRateService {
 
   /// 두 통화 간 변환을 수행합니다. (USD를 거쳐서 변환)
   Future<double?> convertBetweenCurrencies(
-    double amount, 
+      double amount, String fromCurrency, String toCurrency) async {
-    String fromCurrency, 
-    String toCurrency
-  ) async {
     if (fromCurrency == toCurrency) {
       return amount;
     }
@@ -204,7 +220,8 @@ class ExchangeRateService {
   }
 
   /// USD 금액을 지정된 언어의 기본 통화로 변환하여 포맷팅된 문자열로 반환합니다.
-  Future<String> getFormattedAmountForLocale(double usdAmount, String locale) async {
+  Future<String> getFormattedAmountForLocale(
+      double usdAmount, String locale) async {
     String targetCurrency;
     String localeCode;
     String symbol;

lib/services/notification_service.dart

@@ -1,7 +1,6 @@
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:timezone/timezone.dart' as tz;
 import 'package:timezone/data/latest_all.dart' as tz;
-import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
 import 'dart:io' show Platform;
 import '../models/subscription_model.dart';
@@ -10,7 +9,7 @@ import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 class NotificationService {
   static final FlutterLocalNotificationsPlugin _notifications =
       FlutterLocalNotificationsPlugin();
-  static final _secureStorage = const FlutterSecureStorage();
+  static const _secureStorage = FlutterSecureStorage();
 
   static const _notificationEnabledKey = 'notification_enabled';
   static const _paymentNotificationEnabledKey = 'payment_notification_enabled';
@@ -150,15 +149,14 @@ class NotificationService {
     }
   }
 
-
   static Future<bool> requestPermission() async {
     // 웹 플랫폼인 경우 false 반환
     if (_isWeb) return false;
 
     // iOS 처리
     if (Platform.isIOS) {
-      final iosImplementation = _notifications
+      final iosImplementation =
-          .resolvePlatformSpecificImplementation<
+          _notifications.resolvePlatformSpecificImplementation<
               IOSFlutterLocalNotificationsPlugin>();
 
       if (iosImplementation != null) {
@@ -173,13 +171,13 @@ class NotificationService {
 
     // Android 처리
     if (Platform.isAndroid) {
-      final androidImplementation = _notifications
+      final androidImplementation =
-          .resolvePlatformSpecificImplementation<
+          _notifications.resolvePlatformSpecificImplementation<
               AndroidFlutterLocalNotificationsPlugin>();
 
       if (androidImplementation != null) {
-        final granted = await androidImplementation
+        final granted =
-            .requestNotificationsPermission();
+            await androidImplementation.requestNotificationsPermission();
         return granted ?? false;
       }
     }
@@ -194,8 +192,8 @@ class NotificationService {
 
     // Android 처리
     if (Platform.isAndroid) {
-      final androidImplementation = _notifications
+      final androidImplementation =
-          .resolvePlatformSpecificImplementation<
+          _notifications.resolvePlatformSpecificImplementation<
               AndroidFlutterLocalNotificationsPlugin>();
 
       if (androidImplementation != null) {
@@ -207,8 +205,8 @@ class NotificationService {
 
     // iOS 처리
     if (Platform.isIOS) {
-      final iosImplementation = _notifications
+      final iosImplementation =
-          .resolvePlatformSpecificImplementation<
+          _notifications.resolvePlatformSpecificImplementation<
               IOSFlutterLocalNotificationsPlugin>();
 
       if (iosImplementation != null) {
@@ -242,7 +240,7 @@ class NotificationService {
         priority: Priority.high,
       );
 
-      final iosDetails = const DarwinNotificationDetails();
+      const iosDetails = DarwinNotificationDetails();
 
       // tz.local 초기화 확인 및 재시도
       tz.Location location;
@@ -267,10 +265,10 @@ class NotificationService {
         title,
         body,
         tz.TZDateTime.from(scheduledDate, location),
-        NotificationDetails(android: androidDetails, iOS: iosDetails),
+        const NotificationDetails(android: androidDetails, iOS: iosDetails),
-        androidAllowWhileIdle: true,
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
+        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
       );
     } catch (e) {
       debugPrint('알림 예약 중 오류 발생: $e');
@@ -352,9 +350,9 @@ class NotificationService {
         '${subscription.serviceName} 구독이 ${subscription.nextBillingDate.day}일 만료됩니다.',
         tz.TZDateTime.from(subscription.nextBillingDate, location),
         notificationDetails,
-        androidAllowWhileIdle: true,
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
+        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
       );
     } catch (e) {
       debugPrint('구독 알림 예약 중 오류 발생: $e');
@@ -417,9 +415,9 @@ class NotificationService {
             priority: Priority.high,
           ),
         ),
-        androidAllowWhileIdle: true,
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
+        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
       );
     } catch (e) {
       debugPrint('결제 알림 예약 중 오류 발생: $e');
@@ -457,7 +455,7 @@ class NotificationService {
       }
 
       await _notifications.zonedSchedule(
-        (subscription.id + '_expiration').hashCode,
+        ('${subscription.id}_expiration').hashCode,
         '구독 만료 예정 알림',
         '${subscription.serviceName} 구독이 7일 후 만료됩니다.',
         tz.TZDateTime.from(reminderDate, location),
@@ -470,9 +468,9 @@ class NotificationService {
             priority: Priority.high,
           ),
         ),
-        androidAllowWhileIdle: true,
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
+        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
       );
     } catch (e) {
       debugPrint('만료 알림 예약 중 오류 발생: $e');
@@ -512,8 +510,9 @@ class NotificationService {
       }
 
       // 기본 알림 예약 (지정된 일수 전)
-      final scheduledDate =
+      final scheduledDate = subscription.nextBillingDate
-          subscription.nextBillingDate.subtract(Duration(days: reminderDays)).copyWith(
+          .subtract(Duration(days: reminderDays))
+          .copyWith(
             hour: reminderHour,
             minute: reminderMinute,
             second: 0,
@@ -536,12 +535,14 @@ class NotificationService {
         // 이벤트가 결제일 전에 종료되는 경우
         final eventPrice = subscription.eventPrice ?? subscription.monthlyCost;
         final normalPrice = subscription.monthlyCost;
-        notificationBody = '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.\n'
+        notificationBody =
+            '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.\n'
             '⚠️ 이벤트 종료로 가격이 ${eventPrice.toStringAsFixed(0)}원에서 ${normalPrice.toStringAsFixed(0)}원으로 변경됩니다.';
       } else {
         // 일반 알림
         final currentPrice = subscription.currentPrice;
-        notificationBody = '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.';
+        notificationBody =
+            '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.';
       }
 
       await _notifications.zonedSchedule(
@@ -568,7 +569,8 @@ class NotificationService {
       if (isDailyReminder && reminderDays >= 2) {
         // 첫 번째 알림 다음 날부터 결제일 전날까지 매일 알림 예약
         for (int i = reminderDays - 1; i >= 1; i--) {
-          final dailyDate = subscription.nextBillingDate.subtract(Duration(days: i)).copyWith(
+          final dailyDate =
+              subscription.nextBillingDate.subtract(Duration(days: i)).copyWith(
                     hour: reminderHour,
                     minute: reminderMinute,
                     second: 0,
@@ -586,15 +588,19 @@ class NotificationService {
           String dailyNotificationBody;
           if (subscription.isEventActive &&
               subscription.eventEndDate != null &&
-              subscription.eventEndDate!.isBefore(subscription.nextBillingDate) &&
+              subscription.eventEndDate!
+                  .isBefore(subscription.nextBillingDate) &&
               subscription.eventEndDate!.isAfter(DateTime.now())) {
-            final eventPrice = subscription.eventPrice ?? subscription.monthlyCost;
+            final eventPrice =
+                subscription.eventPrice ?? subscription.monthlyCost;
             final normalPrice = subscription.monthlyCost;
-            dailyNotificationBody = '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.\n'
+            dailyNotificationBody =
+                '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.\n'
                 '⚠️ 이벤트 종료로 가격이 ${eventPrice.toStringAsFixed(0)}원에서 ${normalPrice.toStringAsFixed(0)}원으로 변경됩니다.';
           } else {
             final currentPrice = subscription.currentPrice;
-            dailyNotificationBody = '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.';
+            dailyNotificationBody =
+                '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.';
           }
 
           await _notifications.zonedSchedule(

lib/services/sms_scan/subscription_converter.dart

@@ -3,7 +3,8 @@ import '../../models/subscription_model.dart';
 
 class SubscriptionConverter {
   // SubscriptionModel 리스트를 Subscription 리스트로 변환
-  List<Subscription> convertModelsToSubscriptions(List<SubscriptionModel> models) {
+  List<Subscription> convertModelsToSubscriptions(
+      List<SubscriptionModel> models) {
     final result = <Subscription>[];
 
     for (var model in models) {
@@ -11,8 +12,12 @@ class SubscriptionConverter {
         final subscription = _convertSingle(model);
         result.add(subscription);
 
-        print('모델 변환 성공: ${model.serviceName}, 카테고리ID: ${model.categoryId}, URL: ${model.websiteUrl}, 통화: ${model.currency}');
+        // 개발 편의를 위한 디버그 로그
+        // ignore: avoid_print
+        print(
+            '모델 변환 성공: ${model.serviceName}, 카테고리ID: ${model.categoryId}, URL: ${model.websiteUrl}, 통화: ${model.currency}');
       } catch (e) {
+        // ignore: avoid_print
         print('모델 변환 중 오류 발생: $e');
       }
     }

lib/services/sms_scan/subscription_filter.dart

@@ -1,11 +1,13 @@
 import '../../models/subscription.dart';
 import '../../models/subscription_model.dart';
+import '../../utils/logger.dart';
 
 class SubscriptionFilter {
   // 중복 구독 필터링 (서비스명과 금액이 같으면 중복으로 간주)
   List<Subscription> filterDuplicates(
       List<Subscription> scanned, List<SubscriptionModel> existing) {
-    print('_filterDuplicates: 스캔된 구독 ${scanned.length}개, 기존 구독 ${existing.length}개');
+    Log.d(
+        '_filterDuplicates: 스캔된 구독 ${scanned.length}개, 기존 구독 ${existing.length}개');
 
     // 중복되지 않은 구독만 필터링
     return scanned.where((scannedSub) {
@@ -16,7 +18,8 @@ class SubscriptionFilter {
         final isSameCost = existingSub.monthlyCost == scannedSub.monthlyCost;
 
         if (isSameName && isSameCost) {
-          print('중복 발견: ${scannedSub.serviceName} (${scannedSub.monthlyCost}원)');
+          Log.d(
+              '중복 발견: ${scannedSub.serviceName} (${scannedSub.monthlyCost}원)');
           return true;
         }
         return false;
@@ -27,7 +30,8 @@ class SubscriptionFilter {
   }
 
   // 반복 횟수 기반 필터링
-  List<Subscription> filterByRepeatCount(List<Subscription> subscriptions, int minCount) {
+  List<Subscription> filterByRepeatCount(
+      List<Subscription> subscriptions, int minCount) {
     return subscriptions.where((sub) => sub.repeatCount >= minCount).toList();
   }
 
@@ -44,7 +48,8 @@ class SubscriptionFilter {
   List<Subscription> filterByPriceRange(
       List<Subscription> subscriptions, double minPrice, double maxPrice) {
     return subscriptions
-        .where((sub) => sub.monthlyCost >= minPrice && sub.monthlyCost <= maxPrice)
+        .where(
+            (sub) => sub.monthlyCost >= minPrice && sub.monthlyCost <= maxPrice)
         .toList();
   }
 

lib/services/sms_scanner.dart

@@ -1,36 +1,69 @@
 import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter_sms_inbox/flutter_sms_inbox.dart';
 import '../models/subscription_model.dart';
+import '../utils/logger.dart';
 import '../temp/test_sms_data.dart';
 import '../services/subscription_url_matcher.dart';
 import '../utils/platform_helper.dart';
 
 class SmsScanner {
+  // 반복 사용되는 리소스 상수화로 파싱 성능 최적화
+  static const List<String> _subscriptionKeywords = [
+    '구독',
+    '결제',
+    '정기결제',
+    '자동결제',
+    '월정액',
+    'subscription',
+    'payment',
+    'billing',
+    'charge',
+    '넷플릭스',
+    'Netflix',
+    '유튜브',
+    'YouTube',
+    'Spotify',
+    '멜론',
+    '웨이브',
+    'Disney+',
+    '디즈니플러스',
+    'Apple',
+    'Microsoft',
+    'GitHub',
+    'Adobe',
+    'Amazon'
+  ];
+  static final List<RegExp> _amountPatterns = <RegExp>[
+    RegExp(r'(\d{1,3}(?:,\d{3})*)(?:원|₩)'), // 원화
+    RegExp(r'\$(\d+(?:\.\d{2})?)'), // 달러
+    RegExp(r'(\d+(?:\.\d{2})?)\s*USD'), // USD
+    RegExp(r'결제.*?(\d{1,3}(?:,\d{3})*)'), // 결제 금액
+  ];
   final SmsQuery _query = SmsQuery();
 
   Future<List<SubscriptionModel>> scanForSubscriptions() async {
     try {
       List<dynamic> smsList;
-      print('SmsScanner: 스캔 시작');
+      Log.d('SmsScanner: 스캔 시작');
 
       // 플랫폼별 분기 처리
       if (kIsWeb) {
         // 웹 환경: 테스트 데이터 사용
-        print('SmsScanner: 웹 환경에서 테스트 데이터 사용');
+        Log.i('SmsScanner: 웹 환경에서 테스트 데이터 사용');
         smsList = TestSmsData.getTestData();
-        print('SmsScanner: 테스트 데이터 개수: ${smsList.length}');
+        Log.d('SmsScanner: 테스트 데이터 개수: ${smsList.length}');
       } else if (PlatformHelper.isIOS) {
         // iOS: SMS 접근 불가, 빈 리스트 반환
-        print('SmsScanner: iOS에서는 SMS 스캔 불가');
+        Log.w('SmsScanner: iOS에서는 SMS 스캔 불가');
         return [];
       } else if (PlatformHelper.isAndroid) {
         // Android: flutter_sms_inbox 사용
-        print('SmsScanner: Android에서 실제 SMS 스캔');
+        Log.i('SmsScanner: Android에서 실제 SMS 스캔');
         smsList = await _scanAndroidSms();
-        print('SmsScanner: 스캔된 SMS 개수: ${smsList.length}');
+        Log.d('SmsScanner: 스캔된 SMS 개수: ${smsList.length}');
       } else {
         // 기타 플랫폼
-        print('SmsScanner: 지원하지 않는 플랫폼');
+        Log.w('SmsScanner: 지원하지 않는 플랫폼');
         return [];
       }
 
@@ -47,32 +80,32 @@ class SmsScanner {
         serviceGroups[serviceName]!.add(sms);
       }
 
-      print('SmsScanner: 그룹화된 서비스 수: ${serviceGroups.length}');
+      Log.d('SmsScanner: 그룹화된 서비스 수: ${serviceGroups.length}');
 
       // 그룹화된 데이터로 구독 분석
       for (final entry in serviceGroups.entries) {
-        print('SmsScanner: 서비스 "${entry.key}" - 메시지 개수: ${entry.value.length}');
+        Log.d('SmsScanner: 서비스 "${entry.key}" - 메시지 개수: ${entry.value.length}');
 
         // 2회 이상 반복된 서비스만 구독으로 간주
         if (entry.value.length >= 2) {
           final serviceSms = entry.value[0]; // 가장 최근 SMS 사용
           final subscription = _parseSms(serviceSms, entry.value.length);
           if (subscription != null) {
-            print(
+            Log.i(
                 'SmsScanner: 구독 추가: ${subscription.serviceName}, 반복 횟수: ${subscription.repeatCount}');
             subscriptions.add(subscription);
           } else {
-            print('SmsScanner: 구독 파싱 실패: ${entry.key}');
+            Log.w('SmsScanner: 구독 파싱 실패: ${entry.key}');
           }
         } else {
-          print('SmsScanner: 반복 횟수 부족, 구독으로 간주하지 않음: ${entry.key}');
+          Log.d('SmsScanner: 반복 횟수 부족, 구독으로 간주하지 않음: ${entry.key}');
         }
       }
 
-      print('SmsScanner: 최종 구독 개수: ${subscriptions.length}');
+      Log.d('SmsScanner: 최종 구독 개수: ${subscriptions.length}');
       return subscriptions;
     } catch (e) {
-      print('SmsScanner: 예외 발생: $e');
+      Log.e('SmsScanner: 예외 발생', e);
       throw Exception('SMS 스캔 중 오류 발생: $e');
     }
   }
@@ -93,7 +126,7 @@ class SmsScanner {
 
       return smsList;
     } catch (e) {
-      print('SmsScanner: Android SMS 스캔 실패: $e');
+      Log.e('SmsScanner: Android SMS 스캔 실패', e);
       return [];
     }
   }
@@ -105,20 +138,10 @@ class SmsScanner {
       final sender = message.address ?? '';
       final date = message.date ?? DateTime.now();
 
-      // 구독 서비스 키워드 매칭
-      final subscriptionKeywords = [
-        '구독', '결제', '정기결제', '자동결제', '월정액', 
-        'subscription', 'payment', 'billing', 'charge',
-        '넷플릭스', 'Netflix', '유튜브', 'YouTube', 'Spotify',
-        '멜론', '웨이브', 'Disney+', '디즈니플러스', 'Apple',
-        'Microsoft', 'GitHub', 'Adobe', 'Amazon'
-      ];
-      
       // 구독 관련 키워드가 있는지 확인
-      bool isSubscription = subscriptionKeywords.any((keyword) => 
+      bool isSubscription = _subscriptionKeywords.any((keyword) =>
           body.toLowerCase().contains(keyword.toLowerCase()) ||
-        sender.toLowerCase().contains(keyword.toLowerCase())
+          sender.toLowerCase().contains(keyword.toLowerCase()));
-      );
 
       if (!isSubscription) {
         return null;
@@ -138,11 +161,12 @@ class SmsScanner {
         'monthlyCost': amount ?? 0.0,
         'billingCycle': billingCycle,
         'message': body,
-        'nextBillingDate': _calculateNextBillingFromDate(date, billingCycle).toIso8601String(),
+        'nextBillingDate':
+            _calculateNextBillingFromDate(date, billingCycle).toIso8601String(),
         'previousPaymentDate': date.toIso8601String(),
       };
     } catch (e) {
-      print('SmsScanner: SMS 파싱 실패: $e');
+      Log.e('SmsScanner: SMS 파싱 실패', e);
       return null;
     }
   }
@@ -189,15 +213,8 @@ class SmsScanner {
 
   // 금액 추출 로직
   double? _extractAmount(String body) {
-    // 다양한 금액 패턴 매칭
+    // 다양한 금액 패턴 매칭(사전 컴파일)
-    final patterns = [
+    for (final pattern in _amountPatterns) {
-      RegExp(r'(\d{1,3}(?:,\d{3})*)(?:원|₩)'),  // 원화
-      RegExp(r'\$(\d+(?:\.\d{2})?)'),           // 달러
-      RegExp(r'(\d+(?:\.\d{2})?)\s*USD'),       // USD
-      RegExp(r'결제.*?(\d{1,3}(?:,\d{3})*)'),    // 결제 금액
-    ];
-    
-    for (final pattern in patterns) {
       final match = pattern.firstMatch(body);
       if (match != null) {
         String amountStr = match.group(1) ?? '';
@@ -213,7 +230,9 @@ class SmsScanner {
   String _extractBillingCycle(String body) {
     if (body.contains('월') || body.contains('monthly') || body.contains('매월')) {
       return 'monthly';
-    } else if (body.contains('년') || body.contains('yearly') || body.contains('annual')) {
+    } else if (body.contains('년') ||
+        body.contains('yearly') ||
+        body.contains('annual')) {
       return 'yearly';
     } else if (body.contains('주') || body.contains('weekly')) {
       return 'weekly';
@@ -224,7 +243,8 @@ class SmsScanner {
   }
 
   // 다음 결제일 계산
-  DateTime _calculateNextBillingFromDate(DateTime lastDate, String billingCycle) {
+  DateTime _calculateNextBillingFromDate(
+      DateTime lastDate, String billingCycle) {
     switch (billingCycle) {
       case 'monthly':
         return DateTime(lastDate.year, lastDate.month + 1, lastDate.day);
@@ -241,7 +261,8 @@ class SmsScanner {
     try {
       final serviceName = sms['serviceName'] as String? ?? '알 수 없는 서비스';
       final monthlyCost = (sms['monthlyCost'] as num?)?.toDouble() ?? 0.0;
-      final billingCycle = SubscriptionModel.normalizeBillingCycle(sms['billingCycle'] as String? ?? 'monthly');
+      final billingCycle = SubscriptionModel.normalizeBillingCycle(
+          sms['billingCycle'] as String? ?? 'monthly');
       final nextBillingDateStr = sms['nextBillingDate'] as String?;
       // 실제 반복 횟수 사용 (테스트 데이터에서는 이미 제공됨)
       final actualRepeatCount = repeatCount > 0 ? repeatCount : 1;
@@ -259,7 +280,7 @@ class SmsScanner {
         'Spotify Premium'
       ];
       if (dollarServices.any((service) => serviceName.contains(service))) {
-        print('서비스명 $serviceName으로 USD 통화 단위 확정');
+        Log.d('서비스명 $serviceName으로 USD 통화 단위 확정');
         currency = 'USD';
       }
 
@@ -369,8 +390,6 @@ class SmsScanner {
     return serviceUrls[serviceName];
   }
 
-
-
   // 메시지에서 통화 단위를 감지하는 함수
   String _detectCurrency(String message) {
     final dollarKeywords = [
@@ -391,7 +410,7 @@ class SmsScanner {
     // 서비스명 기반 통화 단위 확인
     for (final service in serviceCurrencyMap.keys) {
       if (message.contains(service)) {
-        print('_detectCurrency: ${service}는 USD 서비스로 판별됨');
+        Log.d('_detectCurrency: $service는 USD 서비스로 판별됨');
         return 'USD';
       }
     }
@@ -399,7 +418,7 @@ class SmsScanner {
     // 메시지에 달러 관련 키워드가 있는지 확인
     for (final keyword in dollarKeywords) {
       if (message.toLowerCase().contains(keyword.toLowerCase())) {
-        print('_detectCurrency: USD 키워드 발견: $keyword');
+        Log.d('_detectCurrency: USD 키워드 발견: $keyword');
         return 'USD';
       }
     }

lib/services/subscription_url_matcher.dart

@@ -29,7 +29,8 @@ class SubscriptionUrlMatcher {
     // 2. 서비스 초기화
     _categoryMapper = CategoryMapperService(_dataRepository!);
     _urlMatcher = UrlMatcherService(_dataRepository!, _categoryMapper!);
-    _cancellationService = CancellationUrlService(_dataRepository!, _urlMatcher!);
+    _cancellationService =
+        CancellationUrlService(_dataRepository!, _urlMatcher!);
     _nameResolver = ServiceNameResolver(_dataRepository!);
     _smsExtractor = SmsExtractorService(_urlMatcher!, _categoryMapper!);
   }
@@ -67,7 +68,8 @@ class SubscriptionUrlMatcher {
   /// 서비스에 공식 해지 안내 페이지가 있는지 확인
   static Future<bool> hasCancellationPage(String serviceNameOrUrl) async {
     await initialize();
-    return await _cancellationService?.hasCancellationPage(serviceNameOrUrl) ?? false;
+    return await _cancellationService?.hasCancellationPage(serviceNameOrUrl) ??
+        false;
   }
 
   /// 서비스명으로 카테고리 찾기
@@ -85,7 +87,8 @@ class SubscriptionUrlMatcher {
     return await _nameResolver?.getServiceDisplayName(
           serviceName: serviceName,
           locale: locale,
-    ) ?? serviceName;
+        ) ??
+        serviceName;
   }
 
   /// SMS에서 URL과 서비스 정보 추출

lib/services/url_matcher/data/service_data_repository.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:flutter/services.dart';
+import '../../../utils/logger.dart';
 
 /// 서비스 데이터를 관리하는 저장소 클래스
 class ServiceDataRepository {
@@ -11,12 +12,13 @@ class ServiceDataRepository {
     if (_isInitialized) return;
 
     try {
-      final jsonString = await rootBundle.loadString('assets/data/subscription_services.json');
+      final jsonString =
+          await rootBundle.loadString('assets/data/subscription_services.json');
       _servicesData = json.decode(jsonString);
       _isInitialized = true;
-      print('ServiceDataRepository: JSON 데이터 로드 완료');
+      Log.i('ServiceDataRepository: JSON 데이터 로드 완료');
     } catch (e) {
-      print('ServiceDataRepository: JSON 로드 실패 - $e');
+      Log.w('ServiceDataRepository: JSON 로드 실패 - $e');
       // 로드 실패시 기존 하드코딩 데이터 사용
       _isInitialized = true;
     }

lib/services/url_matcher/services/cancellation_url_service.dart

@@ -25,14 +25,18 @@ class CancellationUrlService {
         final lowerName = serviceName.toLowerCase().trim();
 
         for (final categoryData in categories.values) {
-          final services = (categoryData as Map<String, dynamic>)['services'] as Map<String, dynamic>;
+          final services = (categoryData as Map<String, dynamic>)['services']
+              as Map<String, dynamic>;
 
           for (final serviceData in services.values) {
-            final names = List<String>.from((serviceData as Map<String, dynamic>)['names'] ?? []);
+            final names = List<String>.from(
+                (serviceData as Map<String, dynamic>)['names'] ?? []);
 
             for (final name in names) {
-              if (lowerName.contains(name.toLowerCase()) || name.toLowerCase().contains(lowerName)) {
+              if (lowerName.contains(name.toLowerCase()) ||
-                final cancellationUrls = serviceData['cancellationUrls'] as Map<String, dynamic>?;
+                  name.toLowerCase().contains(lowerName)) {
+                final cancellationUrls =
+                    serviceData['cancellationUrls'] as Map<String, dynamic>?;
                 if (cancellationUrls != null) {
                   // 요청한 언어의 URL이 있으면 반환, 없으면 다른 언어 URL 반환
                   return cancellationUrls[locale] ??
@@ -49,14 +53,18 @@ class CancellationUrlService {
         final domain = _urlMatcher.extractDomain(websiteUrl);
         if (domain != null) {
           for (final categoryData in categories.values) {
-            final services = (categoryData as Map<String, dynamic>)['services'] as Map<String, dynamic>;
+            final services = (categoryData as Map<String, dynamic>)['services']
+                as Map<String, dynamic>;
 
             for (final serviceData in services.values) {
-              final domains = List<String>.from((serviceData as Map<String, dynamic>)['domains'] ?? []);
+              final domains = List<String>.from(
+                  (serviceData as Map<String, dynamic>)['domains'] ?? []);
 
               for (final serviceDomain in domains) {
-                if (domain.contains(serviceDomain) || serviceDomain.contains(domain)) {
+                if (domain.contains(serviceDomain) ||
-                  final cancellationUrls = serviceData['cancellationUrls'] as Map<String, dynamic>?;
+                    serviceDomain.contains(domain)) {
+                  final cancellationUrls =
+                      serviceData['cancellationUrls'] as Map<String, dynamic>?;
                   if (cancellationUrls != null) {
                     return cancellationUrls[locale] ??
                         cancellationUrls[locale == 'kr' ? 'en' : 'kr'];

lib/services/url_matcher/services/category_mapper_service.dart

@@ -24,10 +24,12 @@ class CategoryMapperService {
         final services = categoryData['services'] as Map<String, dynamic>;
 
         for (final serviceData in services.values) {
-          final names = List<String>.from((serviceData as Map<String, dynamic>)['names'] ?? []);
+          final names = List<String>.from(
+              (serviceData as Map<String, dynamic>)['names'] ?? []);
 
           for (final name in names) {
-            if (lowerName.contains(name.toLowerCase()) || name.toLowerCase().contains(lowerName)) {
+            if (lowerName.contains(name.toLowerCase()) ||
+                name.toLowerCase().contains(lowerName)) {
               return getCategoryIdByKey(categoryId);
             }
           }
@@ -73,15 +75,33 @@ class CategoryMapperService {
   String getCategoryForLegacyService(String serviceName) {
     final lowerName = serviceName.toLowerCase();
 
-    if (LegacyServiceData.ottServices.containsKey(lowerName)) return 'ott_services';
+    if (LegacyServiceData.ottServices.containsKey(lowerName)) {
-    if (LegacyServiceData.musicServices.containsKey(lowerName)) return 'music_streaming';
+      return 'ott_services';
-    if (LegacyServiceData.storageServices.containsKey(lowerName)) return 'cloud_storage';
+    }
-    if (LegacyServiceData.aiServices.containsKey(lowerName)) return 'ai_services';
+    if (LegacyServiceData.musicServices.containsKey(lowerName)) {
-    if (LegacyServiceData.programmingServices.containsKey(lowerName)) return 'dev_tools';
+      return 'music_streaming';
-    if (LegacyServiceData.officeTools.containsKey(lowerName)) return 'office_tools';
+    }
-    if (LegacyServiceData.lifestyleServices.containsKey(lowerName)) return 'lifestyle';
+    if (LegacyServiceData.storageServices.containsKey(lowerName)) {
-    if (LegacyServiceData.shoppingServices.containsKey(lowerName)) return 'shopping';
+      return 'cloud_storage';
-    if (LegacyServiceData.telecomServices.containsKey(lowerName)) return 'telecom';
+    }
+    if (LegacyServiceData.aiServices.containsKey(lowerName)) {
+      return 'ai_services';
+    }
+    if (LegacyServiceData.programmingServices.containsKey(lowerName)) {
+      return 'dev_tools';
+    }
+    if (LegacyServiceData.officeTools.containsKey(lowerName)) {
+      return 'office_tools';
+    }
+    if (LegacyServiceData.lifestyleServices.containsKey(lowerName)) {
+      return 'lifestyle';
+    }
+    if (LegacyServiceData.shoppingServices.containsKey(lowerName)) {
+      return 'shopping';
+    }
+    if (LegacyServiceData.telecomServices.containsKey(lowerName)) {
+      return 'telecom';
+    }
 
     return 'other';
   }

lib/services/url_matcher/services/service_name_resolver.dart

@@ -21,7 +21,8 @@ class ServiceNameResolver {
 
     // JSON에서 서비스 찾기
     for (final categoryData in categories.values) {
-      final services = (categoryData as Map<String, dynamic>)['services'] as Map<String, dynamic>;
+      final services = (categoryData as Map<String, dynamic>)['services']
+          as Map<String, dynamic>;
 
       for (final serviceData in services.values) {
         final data = serviceData as Map<String, dynamic>;

lib/services/url_matcher/services/sms_extractor_service.dart

@@ -36,7 +36,9 @@ class SmsExtractorService {
     // 모든 서비스명 검사
     for (final entry in LegacyServiceData.allServices.entries) {
       if (lowerSms.contains(entry.key.toLowerCase())) {
-        final categoryId = await _categoryMapper.findCategoryByServiceName(entry.key) ?? 'other';
+        final categoryId =
+            await _categoryMapper.findCategoryByServiceName(entry.key) ??
+                'other';
 
         return ServiceInfo(
           serviceId: entry.key,

lib/services/url_matcher/services/url_matcher_service.dart

@@ -2,6 +2,7 @@ import '../models/service_info.dart';
 import '../data/service_data_repository.dart';
 import '../data/legacy_service_data.dart';
 import 'category_mapper_service.dart';
+import '../../../utils/logger.dart';
 
 /// URL 매칭 관련 기능을 제공하는 서비스 클래스
 class UrlMatcherService {
@@ -35,7 +36,7 @@ class UrlMatcherService {
 
       return null;
     } catch (e) {
-      print('UrlMatcherService: 도메인 추출 실패 - $e');
+      Log.e('UrlMatcherService: 도메인 추출 실패', e);
       return null;
     }
   }
@@ -62,7 +63,8 @@ class UrlMatcherService {
 
           // 도메인이 일치하는지 확인
           for (final serviceDomain in domains) {
-            if (domain.contains(serviceDomain) || serviceDomain.contains(domain)) {
+            if (domain.contains(serviceDomain) ||
+                serviceDomain.contains(domain)) {
               final names = List<String>.from(serviceData['names'] ?? []);
               final urls = serviceData['urls'] as Map<String, dynamic>?;
 
@@ -106,7 +108,7 @@ class UrlMatcherService {
   /// 서비스명으로 URL 찾기
   String? suggestUrl(String serviceName) {
     if (serviceName.isEmpty) {
-      print('UrlMatcherService: 빈 serviceName');
+      Log.w('UrlMatcherService: 빈 serviceName');
       return null;
     }
 
@@ -117,7 +119,7 @@ class UrlMatcherService {
       // 정확한 매칭을 먼저 시도
       for (final entry in LegacyServiceData.allServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: 정확한 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 정확한 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -125,7 +127,7 @@ class UrlMatcherService {
       // OTT 서비스 검사
       for (final entry in LegacyServiceData.ottServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: OTT 서비스 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: OTT 서비스 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -133,7 +135,7 @@ class UrlMatcherService {
       // 음악 서비스 검사
       for (final entry in LegacyServiceData.musicServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: 음악 서비스 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 음악 서비스 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -141,7 +143,7 @@ class UrlMatcherService {
       // AI 서비스 검사
       for (final entry in LegacyServiceData.aiServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: AI 서비스 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: AI 서비스 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -149,7 +151,7 @@ class UrlMatcherService {
       // 프로그래밍 서비스 검사
       for (final entry in LegacyServiceData.programmingServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: 프로그래밍 서비스 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 프로그래밍 서비스 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -157,7 +159,7 @@ class UrlMatcherService {
       // 오피스 툴 검사
       for (final entry in LegacyServiceData.officeTools.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: 오피스 툴 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 오피스 툴 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -165,7 +167,7 @@ class UrlMatcherService {
       // 기타 서비스 검사
       for (final entry in LegacyServiceData.otherServices.entries) {
         if (lowerName.contains(entry.key.toLowerCase())) {
-          print('UrlMatcherService: 기타 서비스 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 기타 서비스 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
@@ -174,15 +176,15 @@ class UrlMatcherService {
       for (final entry in LegacyServiceData.allServices.entries) {
         final key = entry.key.toLowerCase();
         if (key.contains(lowerName) || lowerName.contains(key)) {
-          print('UrlMatcherService: 부분 매칭 - $lowerName -> ${entry.key}');
+          Log.d('UrlMatcherService: 부분 매칭 - $lowerName -> ${entry.key}');
           return entry.value;
         }
       }
 
-      print('UrlMatcherService: 매칭 실패 - $lowerName');
+      Log.d('UrlMatcherService: 매칭 실패 - $lowerName');
       return null;
     } catch (e) {
-      print('UrlMatcherService: suggestUrl 에러 - $e');
+      Log.e('UrlMatcherService: suggestUrl 에러', e);
       return null;
     }
   }

lib/temp/test_sms_data.dart

@@ -210,6 +210,7 @@ class TestSmsData {
       }
     }
 
+    // ignore: avoid_print
     print('TestSmsData: 생성된 테스트 메시지 수: ${resultData.length}개');
     return resultData;
   }
@@ -233,7 +234,7 @@ class TestSmsData {
     ];
 
     // Microsoft 365는 연간 구독이므로 월별 비용으로 환산 (1년에 1번만 결제)
-    final microsoftMonthlyCost = 12800.0 / 12;
+    const microsoftMonthlyCost = 12800.0 / 12;
 
     // 최근 6개월 데이터 생성
     for (int i = 0; i < 6; i++) {

lib/theme/adaptive_theme.dart

@@ -19,24 +19,21 @@ class AdaptiveTheme {
         secondary: AppColors.secondaryColor,
         tertiary: AppColors.infoColor,
         error: AppColors.dangerColor,
-        background: const Color(0xFF121212),
+        surface: Color(0xFF1E1E1E),
-        surface: const Color(0xFF1E1E1E),
       ),
-      
       scaffoldBackgroundColor: const Color(0xFF121212),
-      
       cardTheme: CardThemeData(
         color: const Color(0xFF1E1E1E),
         elevation: 2,
         shadowColor: Colors.black.withValues(alpha: 0.3),
         shape: RoundedRectangleBorder(
           borderRadius: BorderRadius.circular(16),
-          side: BorderSide(color: Colors.white.withValues(alpha: 0.1), width: 0.5),
+          side: BorderSide(
+              color: Colors.white.withValues(alpha: 0.1), width: 0.5),
         ),
         clipBehavior: Clip.antiAlias,
         margin: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
       ),
-      
       appBarTheme: AppBarTheme(
         backgroundColor: const Color(0xFF1E1E1E),
         foregroundColor: Colors.white,
@@ -53,7 +50,6 @@ class AdaptiveTheme {
           size: 24,
         ),
       ),
-      
       textTheme: TextTheme(
         headlineLarge: const TextStyle(
           color: Colors.white,
@@ -119,22 +115,24 @@ class AdaptiveTheme {
           height: 1.5,
         ),
       ),
-      
       inputDecorationTheme: InputDecorationTheme(
         filled: true,
         fillColor: const Color(0xFF2A2A2A),
-        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
+        contentPadding:
+            const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
         border: OutlineInputBorder(
           borderRadius: BorderRadius.circular(12),
           borderSide: BorderSide.none,
         ),
         enabledBorder: OutlineInputBorder(
           borderRadius: BorderRadius.circular(12),
-          borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.1), width: 1),
+          borderSide:
+              BorderSide(color: Colors.white.withValues(alpha: 0.1), width: 1),
         ),
         focusedBorder: OutlineInputBorder(
           borderRadius: BorderRadius.circular(12),
-          borderSide: const BorderSide(color: AppColors.primaryColor, width: 1.5),
+          borderSide:
+              const BorderSide(color: AppColors.primaryColor, width: 1.5),
         ),
         errorBorder: OutlineInputBorder(
           borderRadius: BorderRadius.circular(12),
@@ -151,7 +149,6 @@ class AdaptiveTheme {
           fontWeight: FontWeight.w400,
         ),
       ),
-      
       elevatedButtonTheme: ElevatedButtonThemeData(
         style: ElevatedButton.styleFrom(
           backgroundColor: AppColors.primaryColor,
@@ -164,7 +161,6 @@ class AdaptiveTheme {
           elevation: 0,
         ),
       ),
-      
       dividerTheme: DividerThemeData(
         color: Colors.white.withValues(alpha: 0.1),
         thickness: 1,
@@ -178,7 +174,6 @@ class AdaptiveTheme {
     return darkTheme.copyWith(
       scaffoldBackgroundColor: Colors.black,
       colorScheme: darkTheme.colorScheme.copyWith(
-        background: Colors.black,
         surface: const Color(0xFF0A0A0A),
       ),
       cardTheme: darkTheme.cardTheme.copyWith(
@@ -203,10 +198,8 @@ class AdaptiveTheme {
         secondary: Colors.black87,
         tertiary: Colors.black54,
         error: Colors.red,
-        background: Colors.white,
         surface: Colors.white,
       ),
-      
       textTheme: const TextTheme(
         headlineLarge: TextStyle(
           color: Colors.black,
@@ -234,7 +227,6 @@ class AdaptiveTheme {
           fontWeight: FontWeight.w500,
         ),
       ),
-      
       cardTheme: CardThemeData(
         elevation: 0,
         shape: RoundedRectangleBorder(
@@ -242,7 +234,6 @@ class AdaptiveTheme {
           side: const BorderSide(color: Colors.black, width: 2),
         ),
       ),
-      
       elevatedButtonTheme: ElevatedButtonThemeData(
         style: ElevatedButton.styleFrom(
           backgroundColor: Colors.black,
@@ -263,20 +254,17 @@ class AdaptiveTheme {
 
     SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
       statusBarColor: Colors.transparent,
-      statusBarIconBrightness: brightness == Brightness.dark 
+      statusBarIconBrightness:
-          ? Brightness.light 
+          brightness == Brightness.dark ? Brightness.light : Brightness.dark,
-          : Brightness.dark,
+      statusBarBrightness:
-      statusBarBrightness: brightness == Brightness.dark 
+          brightness == Brightness.dark ? Brightness.light : Brightness.dark,
-          ? Brightness.light 
-          : Brightness.dark,
       systemNavigationBarColor: isOled
           ? Colors.black
           : (brightness == Brightness.dark
               ? const Color(0xFF121212)
               : Colors.white),
-      systemNavigationBarIconBrightness: brightness == Brightness.dark 
+      systemNavigationBarIconBrightness:
-          ? Brightness.light 
+          brightness == Brightness.dark ? Brightness.light : Brightness.dark,
-          : Brightness.dark,
     ));
   }
 

lib/theme/app_theme.dart

@@ -10,7 +10,6 @@ class AppTheme {
       secondary: AppColors.secondaryColor,
       tertiary: AppColors.infoColor,
       error: AppColors.dangerColor,
-      background: AppColors.backgroundColor,
       surface: AppColors.surfaceColor,
     ),
 
@@ -36,13 +35,13 @@ class AppTheme {
       foregroundColor: AppColors.textPrimary,
       elevation: 0,
       centerTitle: false,
-      titleTextStyle: const TextStyle(
+      titleTextStyle: TextStyle(
         color: AppColors.textPrimary,
         fontSize: 22,
         fontWeight: FontWeight.w600,
         letterSpacing: -0.2,
       ),
-      iconTheme: const IconThemeData(
+      iconTheme: IconThemeData(
         color: AppColors.primaryColor,
         size: 24,
       ),
@@ -51,21 +50,21 @@ class AppTheme {
     // 타이포그래피 - Metronic Tailwind 스타일
     textTheme: const TextTheme(
       // 헤드라인 - 페이지 제목
-      headlineLarge: const TextStyle(
+      headlineLarge: TextStyle(
         color: AppColors.darkNavy, // color.md 가이드: 메인 텍스트
         fontSize: 32,
         fontWeight: FontWeight.w700,
         letterSpacing: -0.5,
         height: 1.2,
       ),
-      headlineMedium: const TextStyle(
+      headlineMedium: TextStyle(
         color: AppColors.darkNavy, // color.md 가이드: 메인 텍스트
         fontSize: 28,
         fontWeight: FontWeight.w700,
         letterSpacing: -0.5,
         height: 1.2,
       ),
-      headlineSmall: const TextStyle(
+      headlineSmall: TextStyle(
         color: AppColors.darkNavy, // color.md 가이드: 메인 텍스트
         fontSize: 24,
         fontWeight: FontWeight.w600,
@@ -74,7 +73,7 @@ class AppTheme {
       ),
 
       // 타이틀 - 카드, 섹션 제목
-      titleLarge: const TextStyle(
+      titleLarge: TextStyle(
         color: AppColors.darkNavy, // color.md 가이드: 메인 텍스트
         fontSize: 20,
         fontWeight: FontWeight.w600,
@@ -257,14 +256,14 @@ class AppTheme {
 
     // 스위치 스타일
     switchTheme: SwitchThemeData(
-      thumbColor: MaterialStateProperty.resolveWith<Color>((states) {
+      thumbColor: WidgetStateProperty.resolveWith<Color>((states) {
-        if (states.contains(MaterialState.selected)) {
+        if (states.contains(WidgetState.selected)) {
           return AppColors.primaryColor;
         }
         return Colors.white;
       }),
-      trackColor: MaterialStateProperty.resolveWith<Color>((states) {
+      trackColor: WidgetStateProperty.resolveWith<Color>((states) {
-        if (states.contains(MaterialState.selected)) {
+        if (states.contains(WidgetState.selected)) {
           return AppColors.secondaryColor.withValues(alpha: 0.5);
         }
         return AppColors.borderColor;
@@ -273,8 +272,8 @@ class AppTheme {
 
     // 체크박스 스타일
     checkboxTheme: CheckboxThemeData(
-      fillColor: MaterialStateProperty.resolveWith<Color>((states) {
+      fillColor: WidgetStateProperty.resolveWith<Color>((states) {
-        if (states.contains(MaterialState.selected)) {
+        if (states.contains(WidgetState.selected)) {
           return AppColors.primaryColor;
         }
         return Colors.transparent;
@@ -287,8 +286,8 @@ class AppTheme {
 
     // 라디오 버튼 스타일
     radioTheme: RadioThemeData(
-      fillColor: MaterialStateProperty.resolveWith<Color>((states) {
+      fillColor: WidgetStateProperty.resolveWith<Color>((states) {
-        if (states.contains(MaterialState.selected)) {
+        if (states.contains(WidgetState.selected)) {
           return AppColors.primaryColor;
         }
         return AppColors.textSecondary;
@@ -311,12 +310,12 @@ class AppTheme {
       labelColor: AppColors.primaryColor,
       unselectedLabelColor: AppColors.textSecondary,
       indicatorColor: AppColors.primaryColor,
-      labelStyle: const TextStyle(
+      labelStyle: TextStyle(
         fontSize: 14,
         fontWeight: FontWeight.w600,
         letterSpacing: 0.1,
       ),
-      unselectedLabelStyle: const TextStyle(
+      unselectedLabelStyle: TextStyle(
         fontSize: 14,
         fontWeight: FontWeight.w500,
         letterSpacing: 0.1,

lib/utils/logger.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/foundation.dart';
+
+/// 단순 로거 헬퍼
+/// - 디버그/프로파일 모드에서만 상세 로그 출력
+/// - 릴리스 모드에서는 중요한 경고/에러만 축약 출력
+class Log {
+  static bool get _verbose => !kReleaseMode;
+
+  static void d(String message) {
+    if (_verbose) debugPrint(message);
+  }
+
+  static void i(String message) {
+    if (_verbose) debugPrint('ℹ️ $message');
+  }
+
+  static void w(String message) {
+    // 경고는 릴리스에서도 간단히 남김
+    debugPrint('⚠️ $message');
+  }
+
+  static void e(String message, [Object? error, StackTrace? stack]) {
+    final suffix = error != null ? ' | $error' : '';
+    debugPrint('❌ $message$suffix');
+    if (_verbose && stack != null) debugPrint(stack.toString());
+  }
+}

lib/utils/memory_manager.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
+import 'logger.dart';
 import 'dart:async';
 
 /// 메모리 관리를 위한 헬퍼 클래스
@@ -57,15 +58,14 @@ class MemoryManager {
   void clearCache() {
     _cache.clear();
     if (kDebugMode) {
-      print('🧹 메모리 캐시가 비워졌습니다.');
+      Log.d('🧹 메모리 캐시가 비워졌습니다.');
     }
   }
 
   /// 특정 패턴의 캐시 제거
   void clearCacheByPattern(String pattern) {
-    final keysToRemove = _cache.keys
+    final keysToRemove =
-        .where((key) => key.contains(pattern))
+        _cache.keys.where((key) => key.contains(pattern)).toList();
-        .toList();
 
     for (final key in keysToRemove) {
       _cache.remove(key);
@@ -123,7 +123,7 @@ class MemoryManager {
     PaintingBinding.instance.imageCache.clear();
     PaintingBinding.instance.imageCache.clearLiveImages();
     if (kDebugMode) {
-      print('🖼️ 이미지 캐시가 비워졌습니다.');
+      Log.d('🖼️ 이미지 캐시가 비워졌습니다.');
     }
   }
 
@@ -139,9 +139,7 @@ class MemoryManager {
 
   /// 살아있는 위젯 수 확인
   int getAliveWidgetCount() {
-    return _widgetReferences.values
+    return _widgetReferences.values.where((ref) => ref.target != null).length;
-        .where((ref) => ref.target != null)
-        .length;
   }
 
   /// 메모리 압박 시 대응
@@ -158,7 +156,7 @@ class MemoryManager {
     imageCache.maximumSizeBytes = maxImageCacheSize ~/ 2;
 
     if (kDebugMode) {
-      print('⚠️ 메모리 압박 대응: 캐시 크기 감소');
+      Log.w('메모리 압박 대응: 캐시 크기 감소');
     }
   }
 
@@ -231,7 +229,8 @@ class ImageCacheStatus {
   });
 
   double get sizeUsagePercentage => (currentSize / maximumSize) * 100;
-  double get bytesUsagePercentage => (currentSizeBytes / maximumSizeBytes) * 100;
+  double get bytesUsagePercentage =>
+      (currentSizeBytes / maximumSizeBytes) * 100;
 
   Map<String, dynamic> toJson() => {
         'currentSize': currentSize,
@@ -263,10 +262,8 @@ class MemoryEfficientListView<T> extends StatefulWidget {
       _MemoryEfficientListViewState<T>();
 }
 
-class _MemoryEfficientListViewState<T> 
+class _MemoryEfficientListViewState<T> extends State<MemoryEfficientListView<T>>
-    extends State<MemoryEfficientListView<T>> 
     with AutomaticKeepAliveClientMixin {
-  
   @override
   bool get wantKeepAlive => false;
 

lib/utils/performance_optimizer.dart

@@ -1,11 +1,13 @@
 import 'package:flutter/foundation.dart';
+import 'logger.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 import 'dart:async';
 
 /// 성능 최적화를 위한 유틸리티 클래스
 class PerformanceOptimizer {
-  static final PerformanceOptimizer _instance = PerformanceOptimizer._internal();
+  static final PerformanceOptimizer _instance =
+      PerformanceOptimizer._internal();
   factory PerformanceOptimizer() => _instance;
   PerformanceOptimizer._internal();
 
@@ -104,7 +106,8 @@ class PerformanceOptimizer {
   }
 
   /// 이미지 최적화 - 메모리 효율적인 크기로 조정
-  static double getOptimalImageSize(BuildContext context, {
+  static double getOptimalImageSize(
+    BuildContext context, {
     required double originalSize,
     double maxSize = 1000,
   }) {
@@ -139,12 +142,12 @@ class PerformanceOptimizer {
   /// 빌드 최적화를 위한 const 위젯 권장사항 체크
   static void checkConstOptimization() {
     if (kDebugMode) {
-      print('💡 성능 최적화 팁:');
+      Log.i('💡 성능 최적화 팁:\n'
-      print('1. 가능한 모든 위젯에 const 사용');
+          '1. 가능한 모든 위젯에 const 사용\n'
-      print('2. StatelessWidget 대신 const 생성자 사용');
+          '2. StatelessWidget 대신 const 생성자 사용\n'
-      print('3. 큰 리스트는 ListView.builder 사용');
+          '3. 큰 리스트는 ListView.builder 사용\n'
-      print('4. 이미지는 캐싱과 함께 적절한 크기로 로드');
+          '4. 이미지는 캐싱과 함께 적절한 크기로 로드\n'
-      print('5. 애니메이션은 AnimatedBuilder 사용');
+          '5. 애니메이션은 AnimatedBuilder 사용');
     }
   }
 
@@ -154,12 +157,12 @@ class PerformanceOptimizer {
   static void trackWidget(String widgetName, bool isCreated) {
     if (!kDebugMode) return;
 
-    _widgetCounts[widgetName] = (_widgetCounts[widgetName] ?? 0) + 
+    _widgetCounts[widgetName] =
-        (isCreated ? 1 : -1);
+        (_widgetCounts[widgetName] ?? 0) + (isCreated ? 1 : -1);
 
     // 위젯이 비정상적으로 많이 생성되면 경고
     if ((_widgetCounts[widgetName] ?? 0) > 100) {
-      print('⚠️ 경고: $widgetName 위젯이 100개 이상 생성됨. 메모리 누수 가능성!');
+      Log.w('경고: $widgetName 위젯이 100개 이상 생성됨. 메모리 누수 가능성!');
     }
   }
 }
@@ -176,8 +179,10 @@ class MemoryInfo {
 
   double get usagePercentage => (currentUsage / capacity) * 100;
 
-  String get formattedUsage => '${(currentUsage / 1024 / 1024).toStringAsFixed(2)} MB';
+  String get formattedUsage =>
-  String get formattedCapacity => '${(capacity / 1024 / 1024).toStringAsFixed(2)} MB';
+      '${(currentUsage / 1024 / 1024).toStringAsFixed(2)} MB';
+  String get formattedCapacity =>
+      '${(capacity / 1024 / 1024).toStringAsFixed(2)} MB';
 }
 
 /// 성능 측정 데코레이터
@@ -192,11 +197,11 @@ class PerformanceMeasure {
     try {
       final result = await operation();
       stopwatch.stop();
-      print('✅ $name 완료: ${stopwatch.elapsedMilliseconds}ms');
+      Log.d('✅ $name 완료: ${stopwatch.elapsedMilliseconds}ms');
       return result;
     } catch (e) {
       stopwatch.stop();
-      print('❌ $name 실패: ${stopwatch.elapsedMilliseconds}ms - $e');
+      Log.e('❌ $name 실패: ${stopwatch.elapsedMilliseconds}ms', e);
       rethrow;
     }
   }

lib/utils/subscription_category_helper.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import '../models/subscription_model.dart';
 import '../providers/category_provider.dart';
-import '../services/subscription_url_matcher.dart';
 import '../services/url_matcher/data/legacy_service_data.dart';
 
 /// 구독 서비스를 카테고리별로 구분하는 도우미 클래스
@@ -86,8 +85,8 @@ class SubscriptionCategoryHelper {
         categorizedSubscriptions['shoppingEcommerce']!.add(subscription);
       }
       // 프로그래밍
-      else if (_isInCategory(subscription.serviceName,
+      else if (_isInCategory(
-          LegacyServiceData.programmingServices)) {
+          subscription.serviceName, LegacyServiceData.programmingServices)) {
         if (!categorizedSubscriptions.containsKey('programming')) {
           categorizedSubscriptions['programming'] = [];
         }

lib/widgets/add_subscription/add_subscription_app_bar.dart

@@ -6,7 +6,8 @@ import '../../controllers/add_subscription_controller.dart';
 import '../../l10n/app_localizations.dart';
 
 /// 구독 추가 화면의 App Bar
-class AddSubscriptionAppBar extends StatelessWidget implements PreferredSizeWidget {
+class AddSubscriptionAppBar extends StatelessWidget
+    implements PreferredSizeWidget {
   final AddSubscriptionController controller;
   final double scrollOffset;
   final VoidCallback onScanSMS;

lib/widgets/add_subscription/add_subscription_event_section.dart

@@ -3,7 +3,6 @@ import '../../controllers/add_subscription_controller.dart';
 import '../common/form_fields/currency_input_field.dart';
 import '../common/form_fields/date_picker_field.dart';
 import '../../theme/app_colors.dart';
-import '../../l10n/app_localizations.dart';
 
 /// 구독 추가 화면의 이벤트/할인 섹션
 class AddSubscriptionEventSection extends StatelessWidget {
@@ -47,11 +46,11 @@ class AddSubscriptionEventSection extends StatelessWidget {
               color: AppColors.glassBorder.withValues(alpha: 0.1),
               width: 1,
             ),
-            boxShadow: [
+            boxShadow: const [
               BoxShadow(
                 color: AppColors.shadowBlack,
                 blurRadius: 10,
-                offset: const Offset(0, 4),
+                offset: Offset(0, 4),
               ),
             ],
           ),
@@ -66,7 +65,8 @@ class AddSubscriptionEventSection extends StatelessWidget {
                       Container(
                         padding: const EdgeInsets.all(8),
                         decoration: BoxDecoration(
-                          color: controller.gradientColors[0].withValues(alpha: 0.1),
+                          color: controller.gradientColors[0]
+                              .withValues(alpha: 0.1),
                           borderRadius: BorderRadius.circular(12),
                         ),
                         child: Icon(
@@ -146,7 +146,7 @@ class AddSubscriptionEventSection extends StatelessWidget {
                         ),
                         child: Row(
                           children: [
-                            Icon(
+                            const Icon(
                               Icons.info_outline_rounded,
                               color: AppColors.infoColor,
                               size: 20,
@@ -155,7 +155,8 @@ class AddSubscriptionEventSection extends StatelessWidget {
                             Expanded(
                               child: Builder(
                                 builder: (context) {
-                                  final locale = Localizations.localeOf(context);
+                                  final locale =
+                                      Localizations.localeOf(context);
                                   String infoText;
                                   switch (locale.languageCode) {
                                     case 'ko':
@@ -168,11 +169,12 @@ class AddSubscriptionEventSection extends StatelessWidget {
                                       infoText = '设置折扣或促销价格';
                                       break;
                                     default:
-                                      infoText = 'Set up discount or promotion price';
+                                      infoText =
+                                          'Set up discount or promotion price';
                                   }
                                   return Text(
                                     infoText,
-                                    style: TextStyle(
+                                    style: const TextStyle(
                                       fontSize: 14,
                                       color: AppColors.darkNavy,
                                       fontWeight: FontWeight.w500,
@@ -216,8 +218,10 @@ class AddSubscriptionEventSection extends StatelessWidget {
                               setState(() {
                                 controller.eventStartDate = date;
                                 // 시작일 설정 시 종료일이 없으면 자동으로 1달 후로 설정
-                                if (date != null && controller.eventEndDate == null) {
+                                if (date != null &&
-                                  controller.eventEndDate = date.add(const Duration(days: 30));
+                                    controller.eventEndDate == null) {
+                                  controller.eventEndDate =
+                                      date.add(const Duration(days: 30));
                                 }
                               });
                             },
@@ -238,7 +242,8 @@ class AddSubscriptionEventSection extends StatelessWidget {
                       Builder(
                         builder: (BuildContext innerContext) {
                           // 현재 로케일 확인
-                          final currentLocale = Localizations.localeOf(innerContext);
+                          final currentLocale =
+                              Localizations.localeOf(innerContext);
 
                           // 로케일에 따라 직접 텍스트 설정
                           String eventPriceLabel;

lib/widgets/analysis/analysis_badge.dart

@@ -5,7 +5,6 @@ import '../../models/subscription_model.dart';
 import '../../services/currency_util.dart';
 import '../../providers/locale_provider.dart';
 import '../../theme/app_colors.dart';
-import '../../l10n/app_localizations.dart';
 
 /// 파이 차트에서 선택된 섹션에 표시되는 배지 위젯
 class AnalysisBadge extends StatelessWidget {
@@ -33,7 +32,7 @@ class AnalysisBadge extends StatelessWidget {
           color: borderColor,
           width: 2,
         ),
-        boxShadow: [
+        boxShadow: const [
           BoxShadow(
             color: AppColors.shadowBlack,
             blurRadius: 10,
@@ -69,13 +68,17 @@ class AnalysisBadge extends StatelessWidget {
                   String displayText = amountText;
                   if (amountText.length > 12) {
                     // 괄호 안의 내용 제거
-                    displayText = amountText.replaceAll(RegExp(r'\([^)]*\)'), '').trim();
+                    displayText =
+                        amountText.replaceAll(RegExp(r'\([^)]*\)'), '').trim();
                   }
                   if (displayText.length > 10) {
                     // 통화 기호만 남기고 숫자만 표시
-                    final currencySymbol = CurrencyUtil.getCurrencySymbol(subscription.currency);
+                    final currencySymbol =
-                    displayText = displayText.replaceAll(currencySymbol, '').trim();
+                        CurrencyUtil.getCurrencySymbol(subscription.currency);
-                    displayText = '$currencySymbol${displayText.substring(0, 6)}...';
+                    displayText =
+                        displayText.replaceAll(currencySymbol, '').trim();
+                    displayText =
+                        '$currencySymbol${displayText.substring(0, 6)}...';
                   }
                   return Text(
                     displayText,

lib/widgets/analysis/event_analysis_card.dart

@@ -48,10 +48,12 @@ class EventAnalysisCard extends StatelessWidget {
                             crossAxisAlignment: CrossAxisAlignment.start,
                             children: [
                               Row(
-                                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                mainAxisAlignment:
+                                    MainAxisAlignment.spaceBetween,
                                 children: [
                                   ThemedText.headline(
-                                    text: AppLocalizations.of(context).eventDiscountStatus,
+                                    text: AppLocalizations.of(context)
+                                        .eventDiscountStatus,
                                     style: const TextStyle(
                                       fontSize: 18,
                                     ),
@@ -79,7 +81,10 @@ class EventAnalysisCard extends StatelessWidget {
                                         ),
                                         const SizedBox(width: 4),
                                         Text(
-                                          AppLocalizations.of(context).servicesInProgress(provider.activeEventSubscriptions.length),
+                                          AppLocalizations.of(context)
+                                              .servicesInProgress(provider
+                                                  .activeEventSubscriptions
+                                                  .length),
                                           style: const TextStyle(
                                             fontSize: 12,
                                             fontWeight: FontWeight.bold,
@@ -97,15 +102,18 @@ class EventAnalysisCard extends StatelessWidget {
                                 decoration: BoxDecoration(
                                   gradient: LinearGradient(
                                     colors: [
-                                      const Color(0xFFFF6B6B).withValues(alpha: 0.1),
+                                      const Color(0xFFFF6B6B)
-                                      const Color(0xFFFF8787).withValues(alpha: 0.1),
+                                          .withValues(alpha: 0.1),
+                                      const Color(0xFFFF8787)
+                                          .withValues(alpha: 0.1),
                                     ],
                                     begin: Alignment.topLeft,
                                     end: Alignment.bottomRight,
                                   ),
                                   borderRadius: BorderRadius.circular(8),
                                   border: Border.all(
-                                    color: const Color(0xFFFF6B6B).withValues(alpha: 0.3),
+                                    color: const Color(0xFFFF6B6B)
+                                        .withValues(alpha: 0.3),
                                   ),
                                 ),
                                 child: Row(
@@ -118,10 +126,12 @@ class EventAnalysisCard extends StatelessWidget {
                                     const SizedBox(width: 12),
                                     Expanded(
                                       child: Column(
-                                        crossAxisAlignment: CrossAxisAlignment.start,
+                                        crossAxisAlignment:
+                                            CrossAxisAlignment.start,
                                         children: [
                                           ThemedText(
-                                            AppLocalizations.of(context).monthlySavingAmount,
+                                            AppLocalizations.of(context)
+                                                .monthlySavingAmount,
                                             style: const TextStyle(
                                               fontSize: 12,
                                               fontWeight: FontWeight.w500,
@@ -154,24 +164,29 @@ class EventAnalysisCard extends StatelessWidget {
                               ),
                               const SizedBox(height: 12),
                               ...provider.activeEventSubscriptions.map((sub) {
-                                final savings = sub.originalPrice - (sub.eventPrice ?? sub.originalPrice);
+                                final savings = sub.originalPrice -
+                                    (sub.eventPrice ?? sub.originalPrice);
                                 final discountRate =
-                                    ((savings / sub.originalPrice) * 100).round();
+                                    ((savings / sub.originalPrice) * 100)
+                                        .round();
                                 return Container(
                                   margin: const EdgeInsets.only(bottom: 8),
                                   padding: const EdgeInsets.all(12),
                                   decoration: BoxDecoration(
-                                    color: AppColors.darkNavy.withValues(alpha: 0.05),
+                                    color: AppColors.darkNavy
+                                        .withValues(alpha: 0.05),
                                     borderRadius: BorderRadius.circular(8),
                                     border: Border.all(
-                                      color: AppColors.darkNavy.withValues(alpha: 0.1),
+                                      color: AppColors.darkNavy
+                                          .withValues(alpha: 0.1),
                                     ),
                                   ),
                                   child: Row(
                                     children: [
                                       Expanded(
                                         child: Column(
-                                          crossAxisAlignment: CrossAxisAlignment.start,
+                                          crossAxisAlignment:
+                                              CrossAxisAlignment.start,
                                           children: [
                                             ThemedText(
                                               sub.serviceName,
@@ -184,8 +199,8 @@ class EventAnalysisCard extends StatelessWidget {
                                             Row(
                                               children: [
                                                 FutureBuilder<String>(
-                                                  future: CurrencyUtil
+                                                  future:
-                                                      .formatAmount(
+                                                      CurrencyUtil.formatAmount(
                                                           sub.originalPrice,
                                                           sub.currency),
                                                   builder: (context, snapshot) {
@@ -194,9 +209,11 @@ class EventAnalysisCard extends StatelessWidget {
                                                         snapshot.data!,
                                                         style: const TextStyle(
                                                           fontSize: 12,
-                                                          decoration: TextDecoration
+                                                          decoration:
+                                                              TextDecoration
                                                                   .lineThrough,
-                                                          color: AppColors.navyGray,
+                                                          color: AppColors
+                                                              .navyGray,
                                                         ),
                                                       );
                                                     }
@@ -211,9 +228,10 @@ class EventAnalysisCard extends StatelessWidget {
                                                 ),
                                                 const SizedBox(width: 8),
                                                 FutureBuilder<String>(
-                                                  future: CurrencyUtil
+                                                  future:
-                                                      .formatAmount(
+                                                      CurrencyUtil.formatAmount(
-                                                          sub.eventPrice ?? sub.originalPrice,
+                                                          sub.eventPrice ??
+                                                              sub.originalPrice,
                                                           sub.currency),
                                                   builder: (context, snapshot) {
                                                     if (snapshot.hasData) {
@@ -244,7 +262,8 @@ class EventAnalysisCard extends StatelessWidget {
                                         decoration: BoxDecoration(
                                           color: const Color(0xFFFF6B6B)
                                               .withValues(alpha: 0.2),
-                                          borderRadius: BorderRadius.circular(4),
+                                          borderRadius:
+                                              BorderRadius.circular(4),
                                         ),
                                         child: Text(
                                           '$discountRate${AppLocalizations.of(context).discountPercent}',

lib/widgets/analysis/monthly_expense_chart_card.dart

@@ -35,7 +35,8 @@ class MonthlyExpenseChartCard extends StatelessWidget {
       if (maxValue <= 1000000) return 1000000;
 
       // 큰 금액은 자릿수에 맞춰 반올림
-      final magnitude = math.pow(10, maxValue.toString().split('.')[0].length - 1).toDouble();
+      final magnitude =
+          math.pow(10, maxValue.toString().split('.')[0].length - 1).toDouble();
       return ((maxValue / magnitude).ceil() * magnitude).toDouble();
     } else {
       // 소수점이 있는 통화 (달러, 위안)
@@ -153,8 +154,9 @@ class MonthlyExpenseChartCard extends StatelessWidget {
                       ),
                     ),
                     const SizedBox(height: 20),
-                    // 바 차트
+                    // 바 차트 (RepaintBoundary로 페인트 분리)
-                    AspectRatio(
+                    RepaintBoundary(
+                      child: AspectRatio(
                         aspectRatio: 1.6,
                         child: BarChart(
                           BarChartData(
@@ -164,8 +166,7 @@ class MonthlyExpenseChartCard extends StatelessWidget {
                                     0,
                                     (max, data) => math.max(
                                         max, data['totalExpense'] as double)),
-                              locale
+                                locale),
-                          ),
                             barGroups: _getMonthlyBarGroups(locale),
                             gridData: FlGridData(
                               show: true,
@@ -176,13 +177,12 @@ class MonthlyExpenseChartCard extends StatelessWidget {
                                           0,
                                           (max, data) => math.max(max,
                                               data['totalExpense'] as double)),
-                                    locale
+                                      locale),
-                                ),
+                                  CurrencyUtil.getDefaultCurrency(locale)),
-                                CurrencyUtil.getDefaultCurrency(locale)
-                            ),
                               getDrawingHorizontalLine: (value) {
                                 return FlLine(
-                                color: AppColors.navyGray.withValues(alpha: 0.1),
+                                  color:
+                                      AppColors.navyGray.withValues(alpha: 0.1),
                                   strokeWidth: 1,
                                 );
                               },
@@ -233,9 +233,10 @@ class MonthlyExpenseChartCard extends StatelessWidget {
                                     ),
                                     children: [
                                       TextSpan(
-                                      text: CurrencyUtil.formatTotalAmountWithLocale(
+                                        text: CurrencyUtil
-                                          monthlyData[group.x]['totalExpense']
+                                            .formatTotalAmountWithLocale(
-                                              as double,
+                                                monthlyData[group.x]
+                                                    ['totalExpense'] as double,
                                                 locale),
                                         style: const TextStyle(
                                           color: Color(0xFFFBBF24),
@@ -251,10 +252,12 @@ class MonthlyExpenseChartCard extends StatelessWidget {
                           ),
                         ),
                       ),
+                    ),
                     const SizedBox(height: 16),
                     Center(
                       child: ThemedText.caption(
-                        text: AppLocalizations.of(context).monthlySubscriptionExpense,
+                        text: AppLocalizations.of(context)
+                            .monthlySubscriptionExpense,
                         style: const TextStyle(
                           fontSize: 12,
                           fontWeight: FontWeight.bold,

lib/widgets/analysis/subscription_pie_chart_card.dart

@@ -23,7 +23,8 @@ class SubscriptionPieChartCard extends StatefulWidget {
   });
 
   @override
-  State<SubscriptionPieChartCard> createState() => _SubscriptionPieChartCardState();
+  State<SubscriptionPieChartCard> createState() =>
+      _SubscriptionPieChartCardState();
 }
 
 class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
@@ -78,7 +79,6 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
 
   // 파이 차트 섹션 데이터 (언어별 기본 통화로 환산)
   Future<List<PieChartSectionData>> _getPieSections() async {
-    
     if (widget.subscriptions.isEmpty) return [];
 
     // 현재 locale 가져오기
@@ -97,11 +97,13 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
         sectionValues.add(value);
       } else if (subscription.currency == 'USD') {
         // USD를 기본 통화로 변환
-        final converted = await ExchangeRateService().convertUsdToTarget(value, defaultCurrency);
+        final converted = await ExchangeRateService()
+            .convertUsdToTarget(value, defaultCurrency);
         sectionValues.add(converted ?? value);
       } else if (defaultCurrency == 'USD') {
         // 기본 통화가 USD인 경우 다른 통화를 USD로 변환
-        final converted = await ExchangeRateService().convertTargetToUsd(value, subscription.currency);
+        final converted = await ExchangeRateService()
+            .convertTargetToUsd(value, subscription.currency);
         sectionValues.add(converted ?? value);
       } else {
         // 기타 통화는 일단 그대로 사용 (환율 정보가 없는 경우)
@@ -159,7 +161,8 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
   }
 
   // 터치 상태를 반영한 섹션 데이터 생성
-  List<PieChartSectionData> _applyTouchedState(List<PieChartSectionData> sections) {
+  List<PieChartSectionData> _applyTouchedState(
+      List<PieChartSectionData> sections) {
     return List.generate(sections.length, (i) {
       final section = sections[i];
       final isTouched = _touchedIndex == i;
@@ -169,12 +172,14 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
       return PieChartSectionData(
         value: section.value,
         title: section.title,
-        titleStyle: section.titleStyle?.copyWith(fontSize: fontSize) ?? TextStyle(
+        titleStyle: section.titleStyle?.copyWith(fontSize: fontSize) ??
+            TextStyle(
               fontSize: fontSize,
               fontWeight: FontWeight.bold,
               color: AppColors.pureWhite,
               shadows: const [
-            Shadow(color: Colors.black26, blurRadius: 2, offset: Offset(0, 1))
+                Shadow(
+                    color: Colors.black26, blurRadius: 2, offset: Offset(0, 1))
               ],
             ),
         color: section.color,
@@ -217,18 +222,20 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                       mainAxisAlignment: MainAxisAlignment.spaceBetween,
                       children: [
                         ThemedText.headline(
-                          text: AppLocalizations.of(context).subscriptionServiceRatio,
+                          text: AppLocalizations.of(context)
+                              .subscriptionServiceRatio,
                           style: const TextStyle(
                             fontSize: 18,
                           ),
                         ),
                         FutureBuilder<String>(
                           future: CurrencyUtil.getExchangeRateInfoForLocale(
-                            context.watch<LocaleProvider>().locale.languageCode
+                              context
-                          ),
+                                  .watch<LocaleProvider>()
+                                  .locale
+                                  .languageCode),
                           builder: (context, snapshot) {
-                            if (snapshot.hasData &&
+                            if (snapshot.hasData && snapshot.data!.isNotEmpty) {
-                                snapshot.data!.isNotEmpty) {
                               return Container(
                                 padding: const EdgeInsets.symmetric(
                                   horizontal: 8,
@@ -236,15 +243,15 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                                 ),
                                 decoration: BoxDecoration(
                                   color: const Color(0xFFE5F2FF),
-                                  borderRadius:
+                                  borderRadius: BorderRadius.circular(4),
-                                      BorderRadius.circular(4),
                                   border: Border.all(
                                     color: const Color(0xFFBFDBFE),
                                     width: 1,
                                   ),
                                 ),
                                 child: Text(
-                                  AppLocalizations.of(context).exchangeRateFormat(snapshot.data!),
+                                  AppLocalizations.of(context)
+                                      .exchangeRateFormat(snapshot.data!),
                                   style: const TextStyle(
                                     fontSize: 12,
                                     fontWeight: FontWeight.w500,
@@ -272,7 +279,8 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                               height: 250,
                               child: Center(
                                 child: ThemedText(
-                                  AppLocalizations.of(context).noSubscriptionServices,
+                                  AppLocalizations.of(context)
+                                      .noSubscriptionServices,
                                   style: const TextStyle(
                                     fontSize: 16,
                                   ),
@@ -284,16 +292,19 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                               child: FutureBuilder<List<PieChartSectionData>>(
                                 future: _pieSectionsFuture,
                                 builder: (context, snapshot) {
-                                  if (snapshot.connectionState == ConnectionState.waiting) {
+                                  if (snapshot.connectionState ==
+                                      ConnectionState.waiting) {
                                     return const Center(
                                       child: CircularProgressIndicator(),
                                     );
                                   }
 
-                                  if (!snapshot.hasData || snapshot.data!.isEmpty) {
+                                  if (!snapshot.hasData ||
+                                      snapshot.data!.isEmpty) {
                                     return Center(
                                       child: ThemedText(
-                                        AppLocalizations.of(context).noSubscriptionServices,
+                                        AppLocalizations.of(context)
+                                            .noSubscriptionServices,
                                         style: const TextStyle(
                                           fontSize: 16,
                                         ),
@@ -306,14 +317,16 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                                       borderData: FlBorderData(show: false),
                                       sectionsSpace: 2,
                                       centerSpaceRadius: 60,
-                                      sections: _applyTouchedState(snapshot.data!),
+                                      sections:
+                                          _applyTouchedState(snapshot.data!),
                                       pieTouchData: PieTouchData(
                                         enabled: true,
                                         touchCallback: (FlTouchEvent event,
                                             pieTouchResponse) {
                                           // 터치 응답이 없거나 섹션이 없는 경우
                                           if (pieTouchResponse == null ||
-                                              pieTouchResponse.touchedSection == null) {
+                                              pieTouchResponse.touchedSection ==
+                                                  null) {
                                             // 차트 밖으로 나갔을 때만 리셋
                                             if (_touchedIndex != -1) {
                                               setState(() {
@@ -331,7 +344,10 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                                           if (event is FlTapUpEvent) {
                                             setState(() {
                                               // 동일 섹션 탭하면 선택 해제, 아니면 선택
-                                              _touchedIndex = (_touchedIndex == touchedIndex) ? -1 : touchedIndex;
+                                              _touchedIndex = (_touchedIndex ==
+                                                      touchedIndex)
+                                                  ? -1
+                                                  : touchedIndex;
                                             });
                                             return;
                                           }
@@ -364,10 +380,10 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                               (index) {
                                 final subscription =
                                     widget.subscriptions[index];
-                                final color = _chartColors[index % _chartColors.length];
+                                final color =
+                                    _chartColors[index % _chartColors.length];
                                 return Padding(
-                                  padding: const EdgeInsets.only(
+                                  padding: const EdgeInsets.only(bottom: 4.0),
-                                      bottom: 4.0),
                                   child: Row(
                                     children: [
                                       Container(
@@ -385,31 +401,31 @@ class _SubscriptionPieChartCardState extends State<SubscriptionPieChartCard> {
                                           style: const TextStyle(
                                             fontSize: 14,
                                           ),
-                                          overflow:
+                                          overflow: TextOverflow.ellipsis,
-                                              TextOverflow.ellipsis,
                                         ),
                                       ),
                                       FutureBuilder<String>(
                                         future: CurrencyUtil
                                             .formatSubscriptionAmountWithLocale(
                                                 subscription,
-                                                context.read<LocaleProvider>().locale.languageCode),
+                                                context
+                                                    .read<LocaleProvider>()
+                                                    .locale
+                                                    .languageCode),
                                         builder: (context, snapshot) {
                                           if (snapshot.hasData) {
                                             return ThemedText(
                                               snapshot.data!,
                                               style: const TextStyle(
                                                 fontSize: 14,
-                                                fontWeight:
+                                                fontWeight: FontWeight.bold,
-                                                    FontWeight.bold,
                                               ),
                                             );
                                           }
                                           return const SizedBox(
                                             width: 20,
                                             height: 20,
-                                            child:
+                                            child: CircularProgressIndicator(
-                                                CircularProgressIndicator(
                                               strokeWidth: 2,
                                             ),
                                           );

lib/widgets/analysis/total_expense_summary_card.dart

@@ -56,7 +56,8 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                       mainAxisAlignment: MainAxisAlignment.spaceBetween,
                       children: [
                         ThemedText.headline(
-                          text: AppLocalizations.of(context).totalExpenseSummary,
+                          text:
+                              AppLocalizations.of(context).totalExpenseSummary,
                           style: const TextStyle(
                             fontSize: 18,
                           ),
@@ -67,20 +68,24 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                           padding: EdgeInsets.zero,
                           constraints: const BoxConstraints(),
                           onPressed: () async {
-                            final totalExpenseText = CurrencyUtil.formatTotalAmountWithLocale(totalExpense, locale);
+                            final totalExpenseText =
+                                CurrencyUtil.formatTotalAmountWithLocale(
+                                    totalExpense, locale);
                             await Clipboard.setData(
                                 ClipboardData(text: totalExpenseText));
                             HapticFeedbackHelper.lightImpact();
                             if (!context.mounted) return;
                             ScaffoldMessenger.of(context).showSnackBar(
                               SnackBar(
-                                content: Text(AppLocalizations.of(context).totalExpenseCopied(totalExpenseText)),
+                                content: Text(AppLocalizations.of(context)
+                                    .totalExpenseCopied(totalExpenseText)),
                                 duration: const Duration(seconds: 2),
                                 behavior: SnackBarBehavior.floating,
                                 shape: RoundedRectangleBorder(
                                   borderRadius: BorderRadius.circular(8),
                                 ),
-                                backgroundColor: AppColors.glassBackground.withValues(alpha: 0.3),
+                                backgroundColor: AppColors.glassBackground
+                                    .withValues(alpha: 0.3),
                                 margin: const EdgeInsets.symmetric(
                                   horizontal: 16,
                                   vertical: 8,
@@ -115,7 +120,8 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                               ),
                               const SizedBox(height: 4),
                               ThemedText(
-                                CurrencyUtil.formatTotalAmountWithLocale(totalExpense, locale),
+                                CurrencyUtil.formatTotalAmountWithLocale(
+                                    totalExpense, locale),
                                 style: const TextStyle(
                                   fontSize: 26,
                                   fontWeight: FontWeight.bold,
@@ -134,10 +140,12 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                   Container(
                                     padding: const EdgeInsets.all(8),
                                     decoration: BoxDecoration(
-                                      color: AppColors.glassBackground.withValues(alpha: 0.3),
+                                      color: AppColors.glassBackground
+                                          .withValues(alpha: 0.3),
                                       borderRadius: BorderRadius.circular(8),
                                       border: Border.all(
-                                        color: AppColors.glassBorder.withValues(alpha: 0.2),
+                                        color: AppColors.glassBorder
+                                            .withValues(alpha: 0.2),
                                       ),
                                     ),
                                     child: const FaIcon(
@@ -152,7 +160,8 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                         CrossAxisAlignment.start,
                                     children: [
                                       ThemedText.caption(
-                                        text: AppLocalizations.of(context).totalServices,
+                                        text: AppLocalizations.of(context)
+                                            .totalServices,
                                         style: const TextStyle(
                                           fontSize: 12,
                                           fontWeight: FontWeight.bold,
@@ -160,7 +169,9 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                       ),
                                       const SizedBox(height: 2),
                                       ThemedText(
-                                        AppLocalizations.of(context).subscriptionCount(subscriptions.length),
+                                        AppLocalizations.of(context)
+                                            .subscriptionCount(
+                                                subscriptions.length),
                                         style: const TextStyle(
                                           fontSize: 18,
                                           fontWeight: FontWeight.bold,
@@ -176,10 +187,12 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                   Container(
                                     padding: const EdgeInsets.all(8),
                                     decoration: BoxDecoration(
-                                      color: AppColors.glassBackground.withValues(alpha: 0.3),
+                                      color: AppColors.glassBackground
+                                          .withValues(alpha: 0.3),
                                       borderRadius: BorderRadius.circular(8),
                                       border: Border.all(
-                                        color: AppColors.glassBorder.withValues(alpha: 0.2),
+                                        color: AppColors.glassBorder
+                                            .withValues(alpha: 0.2),
                                       ),
                                     ),
                                     child: const FaIcon(
@@ -194,7 +207,8 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                         CrossAxisAlignment.start,
                                     children: [
                                       ThemedText.caption(
-                                        text: AppLocalizations.of(context).averageCost,
+                                        text: AppLocalizations.of(context)
+                                            .averageCost,
                                         style: const TextStyle(
                                           fontSize: 12,
                                           fontWeight: FontWeight.bold,
@@ -202,10 +216,12 @@ class TotalExpenseSummaryCard extends StatelessWidget {
                                       ),
                                       const SizedBox(height: 2),
                                       ThemedText(
-                                        CurrencyUtil.formatTotalAmountWithLocale(
+                                        CurrencyUtil
+                                            .formatTotalAmountWithLocale(
                                                 subscriptions.isEmpty
                                                     ? 0
-                                                : totalExpense / subscriptions.length,
+                                                    : totalExpense /
+                                                        subscriptions.length,
                                                 locale),
                                         style: const TextStyle(
                                           fontSize: 18,

lib/widgets/animated_page_transitions.dart

@@ -138,7 +138,8 @@ class FlipPageRoute<T> extends PageRouteBuilder<T> {
           transitionDuration: const Duration(milliseconds: 800),
           reverseTransitionDuration: const Duration(milliseconds: 800),
           transitionsBuilder: (context, animation, secondaryAnimation, child) {
-            final isAnimatingForward = animation.status == AnimationStatus.forward;
+            final isAnimatingForward =
+                animation.status == AnimationStatus.forward;
 
             final flipAnimation = Tween(
               begin: 0.0,

lib/widgets/animated_wave_background.dart

@@ -109,8 +109,8 @@ class AnimatedWaveBackground extends StatelessWidget {
                 width: 30,
                 height: 30,
                 decoration: BoxDecoration(
-                  color: Colors.white.withValues(alpha: 
+                  color: Colors.white.withValues(
-                    0.1 + 0.1 * pulseController.value,
+                    alpha: 0.1 + 0.1 * pulseController.value,
                   ),
                   borderRadius: BorderRadius.circular(15),
                 ),

lib/widgets/app_navigator.dart

@@ -6,6 +6,7 @@ import '../screens/app_lock_screen.dart';
 import '../models/subscription_model.dart';
 import '../providers/navigation_provider.dart';
 import '../routes/app_routes.dart';
+import '../utils/logger.dart';
 import 'animated_page_transitions.dart';
 import '../l10n/app_localizations.dart';
 
@@ -42,8 +43,9 @@ class AppNavigator {
   }
 
   /// 구독 상세 화면으로 네비게이션
-  static Future<void> toDetail(BuildContext context, SubscriptionModel subscription) async {
+  static Future<void> toDetail(
-    print('AppNavigator.toDetail 호출됨: ${subscription.serviceName}');
+      BuildContext context, SubscriptionModel subscription) async {
+    Log.d('AppNavigator.toDetail 호출됨: ${subscription.serviceName}');
     HapticFeedback.lightImpact();
 
     try {
@@ -51,9 +53,9 @@ class AppNavigator {
         AppRoutes.subscriptionDetail,
         arguments: subscription,
       );
-      print('DetailScreen 네비게이션 성공');
+      Log.d('DetailScreen 네비게이션 성공');
     } catch (e) {
-      print('DetailScreen 네비게이션 오류: $e');
+      Log.e('DetailScreen 네비게이션 오류', e);
     }
   }
 
@@ -196,6 +198,7 @@ class AppNavigationObserver extends NavigatorObserver {
   @override
   void didReplace({Route<dynamic>? newRoute, Route<dynamic>? oldRoute}) {
     super.didReplace(newRoute: newRoute, oldRoute: oldRoute);
-    debugPrint('Navigation: Replace ${oldRoute?.settings.name} with ${newRoute?.settings.name}');
+    debugPrint(
+        'Navigation: Replace ${oldRoute?.settings.name} with ${newRoute?.settings.name}');
   }
 }

lib/widgets/category_header_widget.dart

@@ -68,7 +68,8 @@ class CategoryHeaderWidget extends StatelessWidget {
     final parts = <String>[];
 
     // 개수는 항상 표시
-    parts.add(AppLocalizations.of(context).subscriptionCount(subscriptionCount));
+    parts
+        .add(AppLocalizations.of(context).subscriptionCount(subscriptionCount));
 
     // 통화 부분을 별도로 처리
     final currencyParts = <String>[];

lib/widgets/common/buttons/danger_button.dart

@@ -74,8 +74,7 @@ class _DangerButtonState extends State<DangerButton> {
               ),
               const SizedBox(height: 16),
               Text(
-                widget.confirmationMessage ?? 
+                widget.confirmationMessage ?? '이 작업은 되돌릴 수 없습니다.\n계속하시겠습니까?',
-                '이 작업은 되돌릴 수 없습니다.\n계속하시겠습니까?',
                 textAlign: TextAlign.center,
                 style: const TextStyle(
                   fontSize: 16,

lib/widgets/common/buttons/primary_button.dart

@@ -43,8 +43,10 @@ class _PrimaryButtonState extends State<PrimaryButton> {
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    final effectiveBackgroundColor = widget.backgroundColor ?? theme.primaryColor;
+    final effectiveBackgroundColor =
-    final effectiveForegroundColor = widget.foregroundColor ?? AppColors.pureWhite;
+        widget.backgroundColor ?? theme.primaryColor;
+    final effectiveForegroundColor =
+        widget.foregroundColor ?? AppColors.pureWhite;
 
     Widget button = AnimatedContainer(
       duration: const Duration(milliseconds: 200),
@@ -64,7 +66,8 @@ class _PrimaryButtonState extends State<PrimaryButton> {
           padding: widget.padding ?? const EdgeInsets.symmetric(vertical: 16),
           elevation: widget.enableHoverEffect && _isHovered ? 2 : 0,
           shadowColor: Colors.black.withValues(alpha: 0.08),
-          disabledBackgroundColor: effectiveBackgroundColor.withValues(alpha: 0.6),
+          disabledBackgroundColor:
+              effectiveBackgroundColor.withValues(alpha: 0.6),
         ),
         child: widget.isLoading
             ? SizedBox(

lib/widgets/common/buttons/secondary_button.dart

@@ -42,7 +42,6 @@ class _SecondaryButtonState extends State<SecondaryButton> {
 
   @override
   Widget build(BuildContext context) {
-    final theme = Theme.of(context);
     final effectiveBorderColor = widget.borderColor ?? AppColors.secondaryColor;
     final effectiveTextColor = widget.textColor ?? AppColors.primaryColor;
 
@@ -66,13 +65,13 @@ class _SecondaryButtonState extends State<SecondaryButton> {
                 : effectiveBorderColor,
             width: widget.borderWidth,
           ),
-          padding: widget.padding ?? const EdgeInsets.symmetric(
+          padding: widget.padding ??
+              const EdgeInsets.symmetric(
                 vertical: 12,
                 horizontal: 24,
               ),
-          backgroundColor: _isHovered 
+          backgroundColor:
-              ? AppColors.glassBackground
+              _isHovered ? AppColors.glassBackground : Colors.transparent,
-              : Colors.transparent,
         ),
         child: Row(
           mainAxisAlignment: MainAxisAlignment.center,
@@ -179,9 +178,8 @@ class _TextLinkButtonState extends State<TextLinkButton> {
                 fontSize: widget.fontSize,
                 fontWeight: FontWeight.w500,
                 color: effectiveColor,
-                decoration: _isHovered 
+                decoration:
-                    ? TextDecoration.underline 
+                    _isHovered ? TextDecoration.underline : TextDecoration.none,
-                    : TextDecoration.none,
               ),
             ),
           ],

lib/widgets/common/cards/section_card.dart

@@ -34,7 +34,8 @@ class SectionCard extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     final effectiveBackgroundColor = backgroundColor ?? Colors.white;
-    final effectiveShadow = boxShadow ?? [
+    final effectiveShadow = boxShadow ??
+        [
           BoxShadow(
             color: Colors.black.withValues(alpha: 0.05),
             blurRadius: 10,

lib/widgets/common/dialogs/confirmation_dialog.dart

@@ -53,7 +53,8 @@ class ConfirmationDialog extends StatelessWidget {
             Container(
               padding: const EdgeInsets.all(16),
               decoration: BoxDecoration(
-                color: (iconColor ?? effectiveConfirmColor).withValues(alpha: 0.1),
+                color:
+                    (iconColor ?? effectiveConfirmColor).withValues(alpha: 0.1),
                 borderRadius: BorderRadius.circular(12),
               ),
               child: Icon(

lib/widgets/common/dialogs/loading_overlay.dart

@@ -81,8 +81,8 @@ class LoadingDialog {
       context: context,
       barrierDismissible: barrierDismissible,
       barrierColor: barrierColor ?? Colors.black54,
-      builder: (context) => WillPopScope(
+      builder: (context) => PopScope(
-        onWillPop: () async => barrierDismissible,
+        canPop: barrierDismissible,
         child: Center(
           child: Container(
             padding: const EdgeInsets.all(24),
@@ -193,7 +193,8 @@ class _CustomLoadingIndicatorState extends State<CustomLoadingIndicator>
                     width: widget.size / 5,
                     height: widget.size / 5,
                     decoration: BoxDecoration(
-                      color: effectiveColor.withValues(alpha: 0.3 + value * 0.7),
+                      color:
+                          effectiveColor.withValues(alpha: 0.3 + value * 0.7),
                       shape: BoxShape.circle,
                     ),
                   );
@@ -220,7 +221,8 @@ class _CustomLoadingIndicatorState extends State<CustomLoadingIndicator>
                   height: widget.size * (0.3 + _animation.value * 0.5),
                   decoration: BoxDecoration(
                     shape: BoxShape.circle,
-                    color: effectiveColor.withValues(alpha: 1 - _animation.value),
+                    color:
+                        effectiveColor.withValues(alpha: 1 - _animation.value),
                   ),
                 ),
               ),

lib/widgets/common/form_fields/base_text_field.dart

@@ -66,7 +66,7 @@ class BaseTextField extends StatelessWidget {
         if (label != null) ...[
           Text(
             label!,
-            style: TextStyle(
+            style: const TextStyle(
               fontSize: 16,
               fontWeight: FontWeight.w600,
               color: AppColors.textSecondary,
@@ -90,13 +90,14 @@ class BaseTextField extends StatelessWidget {
           minLines: minLines,
           readOnly: readOnly,
           cursorColor: cursorColor ?? theme.primaryColor,
-          style: style ?? TextStyle(
+          style: style ??
+              const TextStyle(
                 fontSize: 16,
                 color: AppColors.textPrimary,
               ),
           decoration: InputDecoration(
             hintText: hintText,
-            hintStyle: TextStyle(
+            hintStyle: const TextStyle(
               color: AppColors.textMuted,
             ),
             prefixIcon: prefixIcon,

lib/widgets/common/form_fields/billing_cycle_selector.dart

@@ -106,8 +106,6 @@ class BillingCycleSelector extends StatelessWidget {
     if (isSelected) {
       return Colors.white;
     }
-    return isGlassmorphism 
+    return isGlassmorphism ? AppColors.darkNavy : Colors.grey[700]!;
-        ? AppColors.darkNavy
-        : Colors.grey[700]!;
   }
 }

lib/widgets/common/form_fields/category_selector.dart

@@ -55,7 +55,8 @@ class CategorySelector extends StatelessWidget {
                 Consumer<CategoryProvider>(
                   builder: (context, categoryProvider, child) {
                     return Text(
-                      categoryProvider.getLocalizedCategoryName(context, category.name),
+                      categoryProvider.getLocalizedCategoryName(
+                          context, category.name),
                       style: TextStyle(
                         fontSize: 14,
                         fontWeight: FontWeight.w500,
@@ -131,8 +132,6 @@ class CategorySelector extends StatelessWidget {
     if (isSelected) {
       return Colors.white;
     }
-    return isGlassmorphism 
+    return isGlassmorphism ? AppColors.darkNavy : Colors.grey[700]!;
-        ? AppColors.darkNavy
-        : Colors.grey[700]!;
   }
 }

lib/widgets/common/form_fields/currency_input_field.dart

@@ -105,7 +105,11 @@ class _CurrencyInputFieldState extends State<CurrencyInputField> {
   }
 
   double? _parseValue(String text) {
-    final cleanText = text.replaceAll(',', '').replaceAll('₩', '').replaceAll('\$', '').trim();
+    final cleanText = text
+        .replaceAll(',', '')
+        .replaceAll('₩', '')
+        .replaceAll('\$', '')
+        .trim();
     return double.tryParse(cleanText);
   }
 
@@ -128,10 +132,7 @@ class _CurrencyInputFieldState extends State<CurrencyInputField> {
       keyboardType: const TextInputType.numberWithOptions(decimal: true),
       inputFormatters: [
         FilteringTextInputFormatter.allow(
-          widget.currency == 'KRW' 
+            widget.currency == 'KRW' ? RegExp(r'[0-9]') : RegExp(r'[0-9.]')),
-            ? RegExp(r'[0-9]') 
-            : RegExp(r'[0-9.]')
-        ),
         if (widget.currency == 'USD')
           // USD의 경우 소수점 이하 2자리까지만 허용
           TextInputFormatter.withFunction((oldValue, newValue) {
@@ -157,7 +158,8 @@ class _CurrencyInputFieldState extends State<CurrencyInputField> {
         final parsedValue = _parseValue(value);
         widget.onChanged?.call(parsedValue);
       },
-      validator: widget.validator ?? (value) {
+      validator: widget.validator ??
+          (value) {
             if (value == null || value.isEmpty) {
               return AppLocalizations.of(context).amountRequired;
             }

lib/widgets/common/form_fields/currency_selector.dart

@@ -131,9 +131,7 @@ class _CurrencyOption extends StatelessWidget {
 
   Color _getBackgroundColor(ThemeData theme) {
     if (isSelected) {
-      return isGlassmorphism 
+      return isGlassmorphism ? theme.primaryColor : const Color(0xFF3B82F6);
-          ? theme.primaryColor 
-          : const Color(0xFF3B82F6);
     }
     return isGlassmorphism
         ? AppColors.surfaceColorAlt
@@ -154,8 +152,6 @@ class _CurrencyOption extends StatelessWidget {
     if (isSelected) {
       return Colors.white;
     }
-    return isGlassmorphism 
+    return isGlassmorphism ? AppColors.navyGray : Colors.grey[600]!;
-        ? AppColors.navyGray
-        : Colors.grey[600]!;
   }
 }

lib/widgets/common/form_fields/date_picker_field.dart

@@ -48,7 +48,7 @@ class DatePickerField extends StatelessWidget {
       children: [
         Text(
           label,
-          style: TextStyle(
+          style: const TextStyle(
             fontSize: 16,
             fontWeight: FontWeight.w600,
             color: AppColors.darkNavy,
@@ -57,12 +57,15 @@ class DatePickerField extends StatelessWidget {
         const SizedBox(height: 8),
         InkWell(
           focusNode: focusNode,
-          onTap: enabled ? () async {
+          onTap: enabled
+              ? () async {
                   final DateTime? picked = await showDatePicker(
                     context: context,
                     initialDate: selectedDate,
-              firstDate: firstDate ?? DateTime.now().subtract(const Duration(days: 365 * 10)),
+                    firstDate: firstDate ??
-              lastDate: lastDate ?? DateTime.now().add(const Duration(days: 365 * 10)),
+                        DateTime.now().subtract(const Duration(days: 365 * 10)),
+                    lastDate: lastDate ??
+                        DateTime.now().add(const Duration(days: 365 * 10)),
                     builder: (BuildContext context, Widget? child) {
                       return Theme(
                         data: ThemeData.light().copyWith(
@@ -81,7 +84,8 @@ class DatePickerField extends StatelessWidget {
                   if (picked != null && picked != selectedDate) {
                     onDateSelected(picked);
                   }
-          } : null,
+                }
+              : null,
           borderRadius: BorderRadius.circular(16),
           child: Container(
             padding: contentPadding ?? const EdgeInsets.all(16),
@@ -97,21 +101,19 @@ class DatePickerField extends StatelessWidget {
               children: [
                 Expanded(
                   child: Text(
-                    DateFormat(effectiveDateFormat, locale.toString()).format(selectedDate),
+                    DateFormat(effectiveDateFormat, locale.toString())
+                        .format(selectedDate),
                     style: TextStyle(
                       fontSize: 16,
-                      color: enabled 
+                      color:
-                        ? AppColors.textPrimary 
+                          enabled ? AppColors.textPrimary : AppColors.textMuted,
-                        : AppColors.textMuted,
                     ),
                   ),
                 ),
                 Icon(
                   Icons.calendar_today,
                   size: 20,
-                  color: enabled 
+                  color: enabled ? AppColors.navyGray : AppColors.textMuted,
-                    ? AppColors.navyGray
-                    : AppColors.textMuted,
                 ),
               ],
             ),
@@ -158,7 +160,8 @@ class DateRangePickerField extends StatelessWidget {
             primaryColor: primaryColor,
             onDateSelected: onStartDateSelected,
             firstDate: DateTime.now().subtract(const Duration(days: 365)),
-            lastDate: endDate ?? DateTime.now().add(const Duration(days: 365 * 2)),
+            lastDate:
+                endDate ?? DateTime.now().add(const Duration(days: 365 * 2)),
           ),
         ),
         const SizedBox(width: 12),
@@ -203,7 +206,8 @@ class _DateRangeItem extends StatelessWidget {
     final effectivePrimaryColor = primaryColor ?? theme.primaryColor;
 
     return InkWell(
-      onTap: enabled ? () async {
+      onTap: enabled
+          ? () async {
               final DateTime? picked = await showDatePicker(
                 context: context,
                 initialDate: date ?? DateTime.now(),
@@ -227,7 +231,8 @@ class _DateRangeItem extends StatelessWidget {
               if (picked != null) {
                 onDateSelected(picked);
               }
-      } : null,
+            }
+          : null,
       borderRadius: BorderRadius.circular(16),
       child: Container(
         padding: const EdgeInsets.all(16),
@@ -244,7 +249,7 @@ class _DateRangeItem extends StatelessWidget {
           children: [
             Text(
               label,
-              style: TextStyle(
+              style: const TextStyle(
                 fontSize: 12,
                 color: AppColors.textSecondary,
               ),
@@ -252,14 +257,14 @@ class _DateRangeItem extends StatelessWidget {
             const SizedBox(height: 4),
             Text(
               date != null
-                  ? DateFormat(AppLocalizations.of(context).dateFormatShort).format(date!)
+                  ? DateFormat(AppLocalizations.of(context).dateFormatShort)
+                      .format(date!)
                   : AppLocalizations.of(context).dateSelect,
               style: TextStyle(
                 fontSize: 16,
                 fontWeight: FontWeight.w500,
-                color: date != null
+                color:
-                    ? AppColors.textPrimary
+                    date != null ? AppColors.textPrimary : AppColors.textMuted,
-                    : AppColors.textMuted,
               ),
             ),
           ],

lib/widgets/common/snackbar/app_snackbar.dart

@@ -200,7 +200,7 @@ class AppSnackBar {
               width: 24,
               height: 24,
               margin: const EdgeInsets.only(right: 12),
-              child: CircularProgressIndicator(
+              child: const CircularProgressIndicator(
                 strokeWidth: 2.5,
                 color: AppColors.pureWhite,
               ),

lib/widgets/detail/detail_event_section.dart

@@ -44,11 +44,11 @@ class DetailEventSection extends StatelessWidget {
                   color: AppColors.glassBorder.withValues(alpha: 0.1),
                   width: 1,
                 ),
-            boxShadow: [
+                boxShadow: const [
                   BoxShadow(
                     color: AppColors.shadowBlack,
                     blurRadius: 10,
-                offset: const Offset(0, 4),
+                    offset: Offset(0, 4),
                   ),
                 ],
               ),
@@ -118,7 +118,7 @@ class DetailEventSection extends StatelessWidget {
                         ),
                         child: Row(
                           children: [
-                        Icon(
+                            const Icon(
                               Icons.info_outline_rounded,
                               color: AppColors.infoColor,
                               size: 20,
@@ -127,7 +127,7 @@ class DetailEventSection extends StatelessWidget {
                             Expanded(
                               child: Text(
                                 AppLocalizations.of(context).eventPriceHint,
-                            style: TextStyle(
+                                style: const TextStyle(
                                   fontSize: 14,
                                   color: AppColors.darkNavy,
                                   fontWeight: FontWeight.w500,
@@ -146,7 +146,8 @@ class DetailEventSection extends StatelessWidget {
                           controller.eventStartDate = date;
                           // 시작일 설정 시 종료일이 없으면 자동으로 1달 후로 설정
                           if (date != null && controller.eventEndDate == null) {
-                        controller.eventEndDate = date.add(const Duration(days: 30));
+                            controller.eventEndDate =
+                                date.add(const Duration(days: 30));
                           }
                         },
                         onEndDateSelected: (date) {
@@ -166,11 +167,14 @@ class DetailEventSection extends StatelessWidget {
                         validator: controller.isEventActive
                             ? (value) {
                                 if (value == null || value.isEmpty) {
-                              return AppLocalizations.of(context).eventPriceRequired;
+                                  return AppLocalizations.of(context)
+                                      .eventPriceRequired;
                                 }
-                            final price = double.tryParse(value.replaceAll(',', ''));
+                                final price =
+                                    double.tryParse(value.replaceAll(',', ''));
                                 if (price == null || price <= 0) {
-                              return AppLocalizations.of(context).invalidPrice;
+                                  return AppLocalizations.of(context)
+                                      .invalidPrice;
                                 }
                                 return null;
                               }
@@ -181,9 +185,10 @@ class DetailEventSection extends StatelessWidget {
                       if (controller.eventPriceController.text.isNotEmpty)
                         _DiscountBadge(
                           originalPrice: controller.subscription.monthlyCost,
-                      eventPrice: double.tryParse(
+                          eventPrice: double.tryParse(controller
-                        controller.eventPriceController.text.replaceAll(',', '')
+                                  .eventPriceController.text
-                      ) ?? 0,
+                                  .replaceAll(',', '')) ??
+                              0,
                           currency: controller.currency,
                         ),
                     ],
@@ -216,7 +221,8 @@ class _DiscountBadge extends StatelessWidget {
       return const SizedBox.shrink();
     }
 
-    final discountPercentage = ((originalPrice - eventPrice) / originalPrice * 100).round();
+    final discountPercentage =
+        ((originalPrice - eventPrice) / originalPrice * 100).round();
     final discountAmount = originalPrice - eventPrice;
 
     return Container(
@@ -234,7 +240,9 @@ class _DiscountBadge extends StatelessWidget {
               borderRadius: BorderRadius.circular(8),
             ),
             child: Text(
-              AppLocalizations.of(context).discountPercent.replaceAll('@', discountPercentage.toString()),
+              AppLocalizations.of(context)
+                  .discountPercent
+                  .replaceAll('@', discountPercentage.toString()),
               style: const TextStyle(
                 color: Colors.white,
                 fontSize: 12,
@@ -245,8 +253,8 @@ class _DiscountBadge extends StatelessWidget {
           const SizedBox(width: 12),
           Text(
             _getLocalizedDiscountAmount(context, currency, discountAmount),
-            style: TextStyle(
+            style: const TextStyle(
-              color: const Color(0xFF15803D),
+              color: Color(0xFF15803D),
               fontSize: 14,
               fontWeight: FontWeight.w500,
             ),
@@ -256,7 +264,8 @@ class _DiscountBadge extends StatelessWidget {
     );
   }
 
-  String _getLocalizedDiscountAmount(BuildContext context, String currency, double amount) {
+  String _getLocalizedDiscountAmount(
+      BuildContext context, String currency, double amount) {
     final loc = AppLocalizations.of(context);
     switch (currency) {
       case 'KRW':
@@ -264,9 +273,11 @@ class _DiscountBadge extends StatelessWidget {
       case 'JPY':
         return loc.discountAmountYen.replaceAll('@', amount.toInt().toString());
       case 'CNY':
-        return loc.discountAmountYuan.replaceAll('@', amount.toStringAsFixed(2));
+        return loc.discountAmountYuan
+            .replaceAll('@', amount.toStringAsFixed(2));
       default: // USD
-        return loc.discountAmountDollar.replaceAll('@', amount.toStringAsFixed(2));
+        return loc.discountAmountDollar
+            .replaceAll('@', amount.toStringAsFixed(2));
     }
   }
 }

lib/widgets/detail/detail_form_section.dart

@@ -49,11 +49,11 @@ class DetailFormSection extends StatelessWidget {
                   color: AppColors.glassBorder.withValues(alpha: 0.1),
                   width: 1,
                 ),
-            boxShadow: [
+                boxShadow: const [
                   BoxShadow(
                     color: AppColors.shadowBlack,
                     blurRadius: 10,
-                offset: const Offset(0, 4),
+                    offset: Offset(0, 4),
                   ),
                 ],
               ),
@@ -114,9 +114,9 @@ class DetailFormSection extends StatelessWidget {
                                   controller.currency = value;
                                   // 통화 변경시 금액 포맷 업데이트
                                   if (value == 'KRW') {
-                                final amount = double.tryParse(
+                                    final amount = double.tryParse(controller
-                                  controller.monthlyCostController.text.replaceAll(',', '')
+                                        .monthlyCostController.text
-                                );
+                                        .replaceAll(',', ''));
                                     if (amount != null) {
                                       controller.monthlyCostController.text =
                                           amount.toInt().toString();
@@ -164,7 +164,8 @@ class DetailFormSection extends StatelessWidget {
                       },
                       label: AppLocalizations.of(context).nextBillingDate,
                       firstDate: DateTime.now(),
-                  lastDate: DateTime.now().add(const Duration(days: 365 * 2)),
+                      lastDate:
+                          DateTime.now().add(const Duration(days: 365 * 2)),
                       primaryColor: baseColor,
                     ),
                     const SizedBox(height: 20),
@@ -207,4 +208,3 @@ class DetailFormSection extends StatelessWidget {
     );
   }
 }
-

lib/widgets/detail/detail_header_section.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:intl/intl.dart';
 import '../../models/subscription_model.dart';
 import '../../controllers/detail_screen_controller.dart';
 import '../../providers/locale_provider.dart';
@@ -115,7 +114,8 @@ class DetailHeaderSection extends StatelessWidget {
                                         borderRadius: BorderRadius.circular(16),
                                         boxShadow: [
                                           BoxShadow(
-                                        color: Colors.black.withValues(alpha: 0.1),
+                                            color: Colors.black
+                                                .withValues(alpha: 0.1),
                                             blurRadius: 8,
                                             offset: const Offset(0, 4),
                                           ),
@@ -124,8 +124,10 @@ class DetailHeaderSection extends StatelessWidget {
                                       child: ClipRRect(
                                         borderRadius: BorderRadius.circular(16),
                                         child: WebsiteIcon(
-                                      url: controller.websiteUrlController.text,
+                                          url: controller
-                                      serviceName: controller.serviceNameController.text,
+                                              .websiteUrlController.text,
+                                          serviceName: controller
+                                              .serviceNameController.text,
                                           size: 48,
                                         ),
                                       ),
@@ -134,10 +136,13 @@ class DetailHeaderSection extends StatelessWidget {
                                   const SizedBox(width: 16),
                                   Expanded(
                                     child: Column(
-                                  crossAxisAlignment: CrossAxisAlignment.start,
+                                      crossAxisAlignment:
+                                          CrossAxisAlignment.start,
                                       children: [
                                         Text(
-                                      controller.displayName ?? controller.serviceNameController.text,
+                                          controller.displayName ??
+                                              controller
+                                                  .serviceNameController.text,
                                           style: const TextStyle(
                                             fontSize: 28,
                                             fontWeight: FontWeight.w800,
@@ -154,12 +159,18 @@ class DetailHeaderSection extends StatelessWidget {
                                         ),
                                         const SizedBox(height: 4),
                                         Text(
-                                      AppLocalizations.of(context).billingCyclePayment.replaceAll('@', 
+                                          AppLocalizations.of(context)
-                                        _getLocalizedBillingCycle(context, controller.billingCycle)),
+                                              .billingCyclePayment
+                                              .replaceAll(
+                                                  '@',
+                                                  _getLocalizedBillingCycle(
+                                                      context,
+                                                      controller.billingCycle)),
                                           style: TextStyle(
                                             fontSize: 16,
                                             fontWeight: FontWeight.w500,
-                                        color: Colors.white.withValues(alpha: 0.8),
+                                            color: Colors.white
+                                                .withValues(alpha: 0.8),
                                           ),
                                         ),
                                       ],
@@ -176,19 +187,29 @@ class DetailHeaderSection extends StatelessWidget {
                                   borderRadius: BorderRadius.circular(16),
                                 ),
                                 child: Row(
-                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                  mainAxisAlignment:
+                                      MainAxisAlignment.spaceBetween,
                                   children: [
                                     _InfoColumn(
-                                  label: AppLocalizations.of(context).nextBillingDate,
+                                      label: AppLocalizations.of(context)
-                                  value: AppLocalizations.of(context).formatDate(controller.nextBillingDate),
+                                          .nextBillingDate,
+                                      value: AppLocalizations.of(context)
+                                          .formatDate(
+                                              controller.nextBillingDate),
                                     ),
                                     FutureBuilder<String>(
                                       future: () async {
-                                    final locale = context.read<LocaleProvider>().locale.languageCode;
+                                        final locale = context
+                                            .read<LocaleProvider>()
+                                            .locale
+                                            .languageCode;
                                         final amount = double.tryParse(
-                                      controller.monthlyCostController.text.replaceAll(',', '')
+                                                controller
-                                    ) ?? 0;
+                                                    .monthlyCostController.text
-                                    return CurrencyUtil.formatAmountWithLocale(
+                                                    .replaceAll(',', '')) ??
+                                            0;
+                                        return CurrencyUtil
+                                            .formatAmountWithLocale(
                                           amount,
                                           controller.currency,
                                           locale,
@@ -196,7 +217,8 @@ class DetailHeaderSection extends StatelessWidget {
                                       }(),
                                       builder: (context, snapshot) {
                                         return _InfoColumn(
-                                      label: AppLocalizations.of(context).monthlyExpense,
+                                          label: AppLocalizations.of(context)
+                                              .monthlyExpense,
                                           value: snapshot.data ?? '-',
                                           alignment: CrossAxisAlignment.end,
                                         );
@@ -219,6 +241,7 @@ class DetailHeaderSection extends StatelessWidget {
       },
     );
   }
+
   String _getLocalizedBillingCycle(BuildContext context, String cycle) {
     final loc = AppLocalizations.of(context);
     switch (cycle.toLowerCase()) {

lib/widgets/detail/detail_url_section.dart

@@ -41,11 +41,11 @@ class DetailUrlSection extends StatelessWidget {
               color: AppColors.glassBorder.withValues(alpha: 0.1),
               width: 1,
             ),
-            boxShadow: [
+            boxShadow: const [
               BoxShadow(
                 color: AppColors.shadowBlack,
                 blurRadius: 10,
-                offset: const Offset(0, 4),
+                offset: Offset(0, 4),
               ),
             ],
           ),
@@ -89,7 +89,7 @@ class DetailUrlSection extends StatelessWidget {
                   label: AppLocalizations.of(context).websiteUrl,
                   hintText: AppLocalizations.of(context).urlExample,
                   keyboardType: TextInputType.url,
-                  prefixIcon: Icon(
+                  prefixIcon: const Icon(
                     Icons.link_rounded,
                     color: AppColors.navyGray,
                   ),
@@ -114,7 +114,7 @@ class DetailUrlSection extends StatelessWidget {
                       children: [
                         Row(
                           children: [
-                            Icon(
+                            const Icon(
                               Icons.info_outline_rounded,
                               color: AppColors.warningColor,
                               size: 20,
@@ -122,7 +122,7 @@ class DetailUrlSection extends StatelessWidget {
                             const SizedBox(width: 8),
                             Text(
                               AppLocalizations.of(context).cancelGuide,
-                              style: TextStyle(
+                              style: const TextStyle(
                                 fontSize: 16,
                                 fontWeight: FontWeight.w600,
                                 color: AppColors.darkNavy,
@@ -133,7 +133,7 @@ class DetailUrlSection extends StatelessWidget {
                         const SizedBox(height: 8),
                         Text(
                           AppLocalizations.of(context).cancelServiceGuide,
-                          style: TextStyle(
+                          style: const TextStyle(
                             fontSize: 14,
                             color: AppColors.darkNavy,
                             fontWeight: FontWeight.w500,
@@ -167,7 +167,7 @@ class DetailUrlSection extends StatelessWidget {
                     ),
                     child: Row(
                       children: [
-                        Icon(
+                        const Icon(
                           Icons.auto_fix_high_rounded,
                           color: AppColors.infoColor,
                           size: 20,
@@ -176,7 +176,7 @@ class DetailUrlSection extends StatelessWidget {
                         Expanded(
                           child: Text(
                             AppLocalizations.of(context).urlAutoMatchInfo,
-                            style: TextStyle(
+                            style: const TextStyle(
                               fontSize: 14,
                               color: AppColors.darkNavy,
                               fontWeight: FontWeight.w500,

lib/widgets/empty_state_widget.dart

@@ -58,7 +58,8 @@ class EmptyStateWidget extends StatelessWidget {
                           borderRadius: BorderRadius.circular(16),
                           boxShadow: [
                             BoxShadow(
-                              color: AppColors.primaryColor.withValues(alpha: 0.3),
+                              color:
+                                  AppColors.primaryColor.withValues(alpha: 0.3),
                               spreadRadius: 0,
                               blurRadius: 16,
                               offset: const Offset(0, 8),
@@ -110,7 +111,7 @@ class EmptyStateWidget extends StatelessWidget {
                     },
                     child: Text(
                       AppLocalizations.of(context).addSubscription,
-                      style: TextStyle(
+                      style: const TextStyle(
                         fontSize: 16,
                         fontWeight: FontWeight.w600,
                         letterSpacing: 0.5,

lib/widgets/expandable_fab.dart

@@ -81,7 +81,8 @@ class _ExpandableFabState extends State<ExpandableFab>
               animation: _expandAnimation,
               builder: (context, child) {
                 return Container(
-                  color: AppColors.shadowBlack.withValues(alpha: 3.75 * _expandAnimation.value),
+                  color: AppColors.shadowBlack
+                      .withValues(alpha: 3.75 * _expandAnimation.value),
                 );
               },
             ),

lib/widgets/floating_navigation_bar.dart

@@ -124,8 +124,11 @@ class _FloatingNavigationBarState extends State<FloatingNavigationBar>
                       _NavigationItem(
                         icon: Icons.settings_rounded,
                         label: AppLocalizations.of(context).settings,
-                        isSelected: PlatformHelper.isIOS ? widget.selectedIndex == 3 : widget.selectedIndex == 4,
+                        isSelected: PlatformHelper.isIOS
-                        onTap: () => _onItemTapped(PlatformHelper.isIOS ? 3 : 4),
+                            ? widget.selectedIndex == 3
+                            : widget.selectedIndex == 4,
+                        onTap: () =>
+                            _onItemTapped(PlatformHelper.isIOS ? 3 : 4),
                       ),
                     ],
                   ),

lib/widgets/glassmorphic_app_bar.dart

@@ -6,7 +6,8 @@ import 'themed_text.dart';
 import '../l10n/app_localizations.dart';
 
 /// 글래스모피즘 효과가 적용된 통일된 앱바
-class GlassmorphicAppBar extends StatelessWidget implements PreferredSizeWidget {
+class GlassmorphicAppBar extends StatelessWidget
+    implements PreferredSizeWidget {
   final String title;
   final List<Widget>? actions;
   final Widget? leading;
@@ -54,12 +55,16 @@ class GlassmorphicAppBar extends StatelessWidget implements PreferredSizeWidget
               begin: Alignment.topLeft,
               end: Alignment.bottomRight,
               colors: [
-                (backgroundColor ?? (isDarkMode 
+                (backgroundColor ??
+                        (isDarkMode
                             ? AppColors.glassBackgroundDark
-                    : AppColors.glassBackground)).withValues(alpha: opacity),
+                            : AppColors.glassBackground))
-                (backgroundColor ?? (isDarkMode 
+                    .withValues(alpha: opacity),
+                (backgroundColor ??
+                        (isDarkMode
                             ? AppColors.glassSurfaceDark
-                    : AppColors.glassSurface)).withValues(alpha: opacity * 0.8),
+                            : AppColors.glassSurface))
+                    .withValues(alpha: opacity * 0.8),
               ],
             ),
             border: Border(
@@ -81,7 +86,9 @@ class GlassmorphicAppBar extends StatelessWidget implements PreferredSizeWidget
                     child: SizedBox(
                       height: kToolbarHeight,
                       child: NavigationToolbar(
-                      leading: leading ?? (automaticallyImplyLeading && (canPop || onBackPressed != null)
+                        leading: leading ??
+                            (automaticallyImplyLeading &&
+                                    (canPop || onBackPressed != null)
                                 ? _buildBackButton(context)
                                 : null),
                         middle: _buildTitle(context),
@@ -92,7 +99,8 @@ class GlassmorphicAppBar extends StatelessWidget implements PreferredSizeWidget
                               )
                             : null,
                         centerMiddle: centerTitle,
-                      middleSpacing: titleSpacing ?? NavigationToolbar.kMiddleSpacing,
+                        middleSpacing:
+                            titleSpacing ?? NavigationToolbar.kMiddleSpacing,
                       ),
                     ),
                   ),
@@ -109,7 +117,8 @@ class GlassmorphicAppBar extends StatelessWidget implements PreferredSizeWidget
   Widget _buildBackButton(BuildContext context) {
     return IconButton(
       icon: const Icon(Icons.arrow_back_ios_new_rounded),
-      onPressed: onBackPressed ?? () {
+      onPressed: onBackPressed ??
+          () {
             HapticFeedback.lightImpact();
             Navigator.of(context).pop();
           },
@@ -214,10 +223,12 @@ class GlassmorphicSliverAppBar extends StatelessWidget {
       backgroundColor: Colors.transparent,
       elevation: 0,
       automaticallyImplyLeading: false,
-      leading: leading ?? (automaticallyImplyLeading && (canPop || onBackPressed != null)
+      leading: leading ??
+          (automaticallyImplyLeading && (canPop || onBackPressed != null)
               ? IconButton(
                   icon: const Icon(Icons.arrow_back_ios_new_rounded),
-              onPressed: onBackPressed ?? () {
+                  onPressed: onBackPressed ??
+                      () {
                         HapticFeedback.lightImpact();
                         Navigator.of(context).pop();
                       },
@@ -230,7 +241,8 @@ class GlassmorphicSliverAppBar extends StatelessWidget {
       flexibleSpace: LayoutBuilder(
         builder: (BuildContext context, BoxConstraints constraints) {
           final top = constraints.biggest.height;
-          final isCollapsed = top <= kToolbarHeight + MediaQuery.of(context).padding.top;
+          final isCollapsed =
+              top <= kToolbarHeight + MediaQuery.of(context).padding.top;
 
           return FlexibleSpaceBar(
             title: isCollapsed
@@ -244,7 +256,8 @@ class GlassmorphicSliverAppBar extends StatelessWidget {
                   )
                 : null,
             centerTitle: centerTitle,
-            titlePadding: const EdgeInsets.only(left: 16, bottom: 16, right: 16),
+            titlePadding:
+                const EdgeInsets.only(left: 16, bottom: 16, right: 16),
             background: Stack(
               fit: StackFit.expand,
               children: [
@@ -260,10 +273,12 @@ class GlassmorphicSliverAppBar extends StatelessWidget {
                           colors: [
                             (isDarkMode
                                     ? AppColors.glassBackgroundDark
-                                : AppColors.glassBackground).withValues(alpha: opacity),
+                                    : AppColors.glassBackground)
+                                .withValues(alpha: opacity),
                             (isDarkMode
                                     ? AppColors.glassSurfaceDark
-                                : AppColors.glassSurface).withValues(alpha: opacity * 0.8),
+                                    : AppColors.glassSurface)
+                                .withValues(alpha: opacity * 0.8),
                           ],
                         ),
                         border: Border(

lib/widgets/glassmorphic_scaffold.dart

@@ -80,11 +80,14 @@ class _GlassmorphicScaffoldState extends State<GlassmorphicScaffold>
       final currentScroll = _scrollController!.position.pixels;
 
       // 스크롤 방향에 따라 플로팅 네비게이션 바 표시/숨김
-      if (currentScroll > 50 && _scrollController!.position.userScrollDirection == ScrollDirection.reverse) {
+      if (currentScroll > 50 &&
+          _scrollController!.position.userScrollDirection ==
+              ScrollDirection.reverse) {
         if (_isFloatingNavBarVisible) {
           setState(() => _isFloatingNavBarVisible = false);
         }
-      } else if (_scrollController!.position.userScrollDirection == ScrollDirection.forward) {
+      } else if (_scrollController!.position.userScrollDirection ==
+          ScrollDirection.forward) {
         if (!_isFloatingNavBarVisible) {
           setState(() => _isFloatingNavBarVisible = true);
         }
@@ -159,7 +162,9 @@ class _GlassmorphicScaffoldState extends State<GlassmorphicScaffold>
             gradient: LinearGradient(
               begin: Alignment.topLeft,
               end: Alignment.bottomRight,
-              colors: gradientColors.map((color) => color.withOpacity(0.3)).toList(),
+              colors: gradientColors
+                  .map((color) => color.withValues(alpha: 0.3))
+                  .toList(),
             ),
           ),
         ),
@@ -172,10 +177,13 @@ class _GlassmorphicScaffoldState extends State<GlassmorphicScaffold>
       child: AnimatedBuilder(
         animation: _particleController,
         builder: (context, child) {
+          final media = MediaQuery.maybeOf(context);
+          final reduce = media?.disableAnimations ?? false;
+          final count = reduce ? 10 : 30;
           return CustomPaint(
             painter: ParticlePainter(
               animation: _particleController,
-              particleCount: 30,
+              particleCount: count,
             ),
           );
         },
@@ -273,7 +281,9 @@ class WavePainter extends CustomPainter {
     path.moveTo(0, size.height);
 
     for (double x = 0; x <= size.width; x++) {
-      final y = math.sin((x / size.width * 2 * math.pi) + (progress * 2 * math.pi)) * 20 + 
+      final y =
+          math.sin((x / size.width * 2 * math.pi) + (progress * 2 * math.pi)) *
+                  20 +
               size.height * 0.5;
       path.lineTo(x, y);
     }

lib/widgets/glassmorphism_card.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import '../utils/logger.dart';
 import 'dart:ui';
 import '../theme/app_colors.dart';
 import 'themed_text.dart';
@@ -56,7 +57,8 @@ class GlassmorphismCard extends StatelessWidget {
                 padding: padding,
                 decoration: BoxDecoration(
                   color: backgroundColor ?? AppColors.glassCard,
-                  gradient: gradient ?? LinearGradient(
+                  gradient: gradient ??
+                      LinearGradient(
                         begin: Alignment.topLeft,
                         end: Alignment.bottomRight,
                         colors: isDarkMode
@@ -64,18 +66,21 @@ class GlassmorphismCard extends StatelessWidget {
                             : AppColors.glassGradient,
                       ),
                   borderRadius: BorderRadius.circular(borderRadius),
-                  border: border ?? Border.all(
+                  border: border ??
+                      Border.all(
                         color: isDarkMode
                             ? AppColors.primaryColor.withValues(alpha: 0.3)
                             : AppColors.glassBorder,
                         width: 1,
                       ),
-                  boxShadow: boxShadow ?? [
+                  boxShadow: boxShadow ??
-                    BoxShadow(
+                      [
-                      color: AppColors.shadowBlack,  // color.md 가이드: rgba(0,0,0,0.08)
+                        const BoxShadow(
+                          color: AppColors
+                              .shadowBlack, // color.md 가이드: rgba(0,0,0,0.08)
                           blurRadius: 20,
                           spreadRadius: -5,
-                      offset: const Offset(0, 10),
+                          offset: Offset(0, 10),
                         ),
                       ],
                 ),
@@ -119,7 +124,8 @@ class AnimatedGlassmorphismCard extends StatefulWidget {
   });
 
   @override
-  State<AnimatedGlassmorphismCard> createState() => _AnimatedGlassmorphismCardState();
+  State<AnimatedGlassmorphismCard> createState() =>
+      _AnimatedGlassmorphismCardState();
 }
 
 class _AnimatedGlassmorphismCardState extends State<AnimatedGlassmorphismCard>
@@ -195,7 +201,7 @@ class _AnimatedGlassmorphismCardState extends State<AnimatedGlassmorphismCard>
         _handleTapUp(details);
         // onTap 콜백 실행
         if (widget.onTap != null) {
-          print('[AnimatedGlassmorphismCard] onTap 콜백 실행');
+          Log.d('[AnimatedGlassmorphismCard] onTap 콜백 실행');
           widget.onTap!();
         }
       },

lib/widgets/home_content.dart

@@ -52,8 +52,10 @@ class HomeContent extends StatelessWidget {
     }
 
     // 카테고리별 구독 구분
-    final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+    final categoryProvider =
-    final categorizedSubscriptions = SubscriptionCategoryHelper.categorizeSubscriptions(
+        Provider.of<CategoryProvider>(context, listen: false);
+    final categorizedSubscriptions =
+        SubscriptionCategoryHelper.categorizeSubscriptions(
       provider.subscriptions,
       categoryProvider,
       context,
@@ -120,7 +122,8 @@ class HomeContent extends StatelessWidget {
                     child: Row(
                       children: [
                         Text(
-                          AppLocalizations.of(context).subscriptionCount(provider.subscriptions.length),
+                          AppLocalizations.of(context)
+                              .subscriptionCount(provider.subscriptions.length),
                           style: const TextStyle(
                             fontSize: 14,
                             fontWeight: FontWeight.w600,

lib/widgets/main_summary_card.dart

@@ -88,8 +88,9 @@ class MainScreenSummaryCard extends StatelessWidget {
                           mainAxisAlignment: MainAxisAlignment.spaceBetween,
                           children: [
                             Text(
-                              AppLocalizations.of(context).monthlyTotalSubscriptionCost,
+                              AppLocalizations.of(context)
-                              style: TextStyle(
+                                  .monthlyTotalSubscriptionCost,
+                              style: const TextStyle(
                                 color: AppColors
                                     .darkNavy, // color.md 가이드: 밝은 배경 위 어두운 텍스트
                                 fontSize: 15,
@@ -99,9 +100,12 @@ class MainScreenSummaryCard extends StatelessWidget {
                             // 환율 정보 표시 (영어 사용자는 표시 안함)
                             if (locale != 'en')
                               FutureBuilder<String>(
-                                future: CurrencyUtil.getExchangeRateInfoForLocale(locale),
+                                future:
+                                    CurrencyUtil.getExchangeRateInfoForLocale(
+                                        locale),
                                 builder: (context, snapshot) {
-                                  if (snapshot.hasData && snapshot.data!.isNotEmpty) {
+                                  if (snapshot.hasData &&
+                                      snapshot.data!.isNotEmpty) {
                                     return Container(
                                       padding: const EdgeInsets.symmetric(
                                         horizontal: 8,
@@ -116,7 +120,9 @@ class MainScreenSummaryCard extends StatelessWidget {
                                         ),
                                       ),
                                       child: Text(
-                                        AppLocalizations.of(context).exchangeRateDisplay.replaceAll('@', snapshot.data!),
+                                        AppLocalizations.of(context)
+                                            .exchangeRateDisplay
+                                            .replaceAll('@', snapshot.data!),
                                         style: const TextStyle(
                                           fontSize: 12,
                                           fontWeight: FontWeight.w500,
@@ -133,7 +139,8 @@ class MainScreenSummaryCard extends StatelessWidget {
                         const SizedBox(height: 8),
                         // 월별 총 비용 표시 (언어별 기본 통화)
                         FutureBuilder<double>(
-                          future: CurrencyUtil.calculateTotalMonthlyExpenseInDefaultCurrency(
+                          future: CurrencyUtil
+                              .calculateTotalMonthlyExpenseInDefaultCurrency(
                             provider.subscriptions,
                             locale,
                           ),
@@ -142,7 +149,10 @@ class MainScreenSummaryCard extends StatelessWidget {
                               return const CircularProgressIndicator();
                             }
                             final monthlyCost = snapshot.data!;
-                            final decimals = (defaultCurrency == 'KRW' || defaultCurrency == 'JPY') ? 0 : 2;
+                            final decimals = (defaultCurrency == 'KRW' ||
+                                    defaultCurrency == 'JPY')
+                                ? 0
+                                : 2;
 
                             return Row(
                               crossAxisAlignment: CrossAxisAlignment.baseline,
@@ -150,9 +160,13 @@ class MainScreenSummaryCard extends StatelessWidget {
                               children: [
                                 Text(
                                   NumberFormat.currency(
-                                    locale: defaultCurrency == 'KRW' ? 'ko_KR' : 
+                                    locale: defaultCurrency == 'KRW'
-                                           defaultCurrency == 'JPY' ? 'ja_JP' :
+                                        ? 'ko_KR'
-                                           defaultCurrency == 'CNY' ? 'zh_CN' : 'en_US',
+                                        : defaultCurrency == 'JPY'
+                                            ? 'ja_JP'
+                                            : defaultCurrency == 'CNY'
+                                                ? 'zh_CN'
+                                                : 'en_US',
                                     symbol: '',
                                     decimalDigits: decimals,
                                   ).format(monthlyCost),
@@ -179,7 +193,8 @@ class MainScreenSummaryCard extends StatelessWidget {
                         const SizedBox(height: 16),
                         // 연간 비용 및 총 구독 수 표시
                         FutureBuilder<double>(
-                          future: CurrencyUtil.calculateTotalMonthlyExpenseInDefaultCurrency(
+                          future: CurrencyUtil
+                              .calculateTotalMonthlyExpenseInDefaultCurrency(
                             provider.subscriptions,
                             locale,
                           ),
@@ -189,26 +204,36 @@ class MainScreenSummaryCard extends StatelessWidget {
                             }
                             final monthlyCost = snapshot.data!;
                             final yearlyCost = monthlyCost * 12;
-                            final decimals = (defaultCurrency == 'KRW' || defaultCurrency == 'JPY') ? 0 : 2;
+                            final decimals = (defaultCurrency == 'KRW' ||
+                                    defaultCurrency == 'JPY')
+                                ? 0
+                                : 2;
 
                             return Row(
                               children: [
                                 _buildInfoBox(
                                   context,
-                                  title: AppLocalizations.of(context).estimatedAnnualCost,
+                                  title: AppLocalizations.of(context)
-                                  value: '${NumberFormat.currency(
+                                      .estimatedAnnualCost,
-                                    locale: defaultCurrency == 'KRW' ? 'ko_KR' : 
+                                  value: NumberFormat.currency(
-                                           defaultCurrency == 'JPY' ? 'ja_JP' :
+                                    locale: defaultCurrency == 'KRW'
-                                           defaultCurrency == 'CNY' ? 'zh_CN' : 'en_US',
+                                        ? 'ko_KR'
+                                        : defaultCurrency == 'JPY'
+                                            ? 'ja_JP'
+                                            : defaultCurrency == 'CNY'
+                                                ? 'zh_CN'
+                                                : 'en_US',
                                     symbol: currencySymbol,
                                     decimalDigits: decimals,
-                                  ).format(yearlyCost)}',
+                                  ).format(yearlyCost),
                                 ),
                                 const SizedBox(width: 16),
                                 _buildInfoBox(
                                   context,
-                                  title: AppLocalizations.of(context).totalSubscriptionServices,
+                                  title: AppLocalizations.of(context)
-                                  value: '$totalSubscriptions${AppLocalizations.of(context).servicesUnit}',
+                                      .totalSubscriptionServices,
+                                  value:
+                                      '$totalSubscriptions${AppLocalizations.of(context).servicesUnit}',
                                 ),
                               ],
                             );
@@ -255,8 +280,9 @@ class MainScreenSummaryCard extends StatelessWidget {
                                   crossAxisAlignment: CrossAxisAlignment.start,
                                   children: [
                                     Text(
-                                      AppLocalizations.of(context).eventDiscountActive,
+                                      AppLocalizations.of(context)
-                                      style: TextStyle(
+                                          .eventDiscountActive,
+                                      style: const TextStyle(
                                         color: AppColors
                                             .darkNavy, // color.md 가이드: 밝은 배경 위 어두운 텍스트
                                         fontSize: 11,
@@ -266,7 +292,8 @@ class MainScreenSummaryCard extends StatelessWidget {
                                     const SizedBox(height: 2),
                                     // 이벤트 절약액 표시 (언어별 기본 통화)
                                     FutureBuilder<double>(
-                                      future: CurrencyUtil.calculateTotalEventSavingsInDefaultCurrency(
+                                      future: CurrencyUtil
+                                          .calculateTotalEventSavingsInDefaultCurrency(
                                         provider.subscriptions,
                                         locale,
                                       ),
@@ -275,15 +302,24 @@ class MainScreenSummaryCard extends StatelessWidget {
                                           return const SizedBox();
                                         }
                                         final eventSavings = snapshot.data!;
-                                        final decimals = (defaultCurrency == 'KRW' || defaultCurrency == 'JPY') ? 0 : 2;
+                                        final decimals =
+                                            (defaultCurrency == 'KRW' ||
+                                                    defaultCurrency == 'JPY')
+                                                ? 0
+                                                : 2;
 
                                         return Row(
                                           children: [
                                             Text(
                                               NumberFormat.currency(
-                                                locale: defaultCurrency == 'KRW' ? 'ko_KR' : 
+                                                locale: defaultCurrency == 'KRW'
-                                                       defaultCurrency == 'JPY' ? 'ja_JP' :
+                                                    ? 'ko_KR'
-                                                       defaultCurrency == 'CNY' ? 'zh_CN' : 'en_US',
+                                                    : defaultCurrency == 'JPY'
+                                                        ? 'ja_JP'
+                                                        : defaultCurrency ==
+                                                                'CNY'
+                                                            ? 'zh_CN'
+                                                            : 'en_US',
                                                 symbol: currencySymbol,
                                                 decimalDigits: decimals,
                                               ).format(eventSavings),
@@ -337,7 +373,7 @@ class MainScreenSummaryCard extends StatelessWidget {
           children: [
             Text(
               title,
-              style: TextStyle(
+              style: const TextStyle(
                 color: AppColors.navyGray, // color.md 가이드: 밝은 배경 위 서브 텍스트
                 fontSize: 12,
                 fontWeight: FontWeight.w500,

lib/widgets/native_ad_widget.dart

@@ -44,7 +44,7 @@ class _NativeAdWidgetState extends State<NativeAdWidget> {
     }
 
     _nativeAd = NativeAd(
-      adUnitId: _testAdUnitId(), // 실제 배포 시 교체 필요
+      adUnitId: _testAdUnitId(), // 실제 광고 단위 ID
       factoryId: 'listTile', // Android/iOS 모두 동일하게 맞춰야 함
       request: const AdRequest(),
       listener: NativeAdListener(
@@ -63,15 +63,15 @@ class _NativeAdWidgetState extends State<NativeAdWidget> {
     )..load();
   }
 
-  /// 테스트 광고 단위 ID 반환 함수
+  /// 광고 단위 ID 반환 함수
   /// Theme.of(context)를 사용하지 않고 Platform 클래스 직접 사용
   String _testAdUnitId() {
     if (Platform.isAndroid) {
-      // Android 테스트 네이티브 광고 ID
+      // Android 네이티브 광고 ID
-      return 'ca-app-pub-3940256099942544/2247696110';
+      return 'ca-app-pub-6691216385521068/4512709971';
     } else if (Platform.isIOS) {
-      // iOS 테스트 네이티브 광고 ID
+      // iOS 네이티브 광고 ID
-      return 'ca-app-pub-3940256099942544/3986624511';
+      return 'ca-app-pub-6691216385521068/4512709971';
     }
     return '';
   }

lib/widgets/sms_scan/scan_loading_widget.dart

@@ -14,7 +14,7 @@ class ScanLoadingWidget extends StatelessWidget {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            CircularProgressIndicator(
+            const CircularProgressIndicator(
               valueColor: AlwaysStoppedAnimation<Color>(AppColors.primaryColor),
             ),
             const SizedBox(height: 16),

lib/widgets/sms_scan/subscription_card_widget.dart

@@ -43,7 +43,8 @@ class _SubscriptionCardWidgetState extends State<SubscriptionCardWidget> {
   void initState() {
     super.initState();
     // URL 필드 자동 설정
-    if (widget.websiteUrlController.text.isEmpty && widget.subscription.websiteUrl != null) {
+    if (widget.websiteUrlController.text.isEmpty &&
+        widget.subscription.websiteUrl != null) {
       widget.websiteUrlController.text = widget.subscription.websiteUrl!;
     }
   }
@@ -256,7 +257,8 @@ class _SubscriptionCardWidgetState extends State<SubscriptionCardWidget> {
         const SizedBox(height: 8),
         CategorySelector(
           categories: categoryProvider.categories,
-          selectedCategoryId: widget.selectedCategoryId ?? widget.subscription.category,
+          selectedCategoryId:
+              widget.selectedCategoryId ?? widget.subscription.category,
           onChanged: widget.onCategoryChanged,
           baseColor: _getCategoryColor(categoryProvider),
           isGlassmorphism: true,
@@ -304,7 +306,8 @@ class _SubscriptionCardWidgetState extends State<SubscriptionCardWidget> {
   }
 
   Color? _getCategoryColor(CategoryProvider categoryProvider) {
-    final categoryId = widget.selectedCategoryId ?? widget.subscription.category;
+    final categoryId =
+        widget.selectedCategoryId ?? widget.subscription.category;
     if (categoryId == null) return null;
 
     final category = categoryProvider.getCategoryById(categoryId);

lib/widgets/spring_animation_widget.dart

@@ -325,8 +325,8 @@ class _RippleAnimationState extends State<RippleAnimation>
                 height: 100 + 200 * _animation.value,
                 decoration: BoxDecoration(
                   shape: BoxShape.circle,
-                  color: widget.rippleColor.withValues(alpha: 
+                  color: widget.rippleColor.withValues(
-                    (1 - _animation.value) * 0.3,
+                    alpha: (1 - _animation.value) * 0.3,
                   ),
                 ),
               );

lib/widgets/subscription_card.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:intl/intl.dart';
 import 'package:provider/provider.dart';
 import '../models/subscription_model.dart';
 import '../providers/category_provider.dart';
@@ -60,7 +59,6 @@ class _SubscriptionCardState extends State<SubscriptionCard>
     }
   }
 
-
   @override
   void didUpdateWidget(SubscriptionCard oldWidget) {
     super.didUpdateWidget(oldWidget);
@@ -203,7 +201,9 @@ class _SubscriptionCardState extends State<SubscriptionCard>
         daysUntilNext = 7; // 다음 주 같은 요일
       }
 
-      if (daysUntilNext == 0) return AppLocalizations.of(context).paymentDueToday;
+      if (daysUntilNext == 0) {
+        return AppLocalizations.of(context).paymentDueToday;
+      }
       return AppLocalizations.of(context).paymentDueInDays(daysUntilNext);
     }
 
@@ -234,15 +234,15 @@ class _SubscriptionCardState extends State<SubscriptionCard>
       }
 
       final categoryProvider = context.watch<CategoryProvider>();
-      final category = categoryProvider.getCategoryById(widget.subscription.categoryId!);
+      final category =
+          categoryProvider.getCategoryById(widget.subscription.categoryId!);
 
       if (category == null) {
         return AppColors.blueGradient;
       }
 
-      final categoryColor = Color(
+      final categoryColor =
-        int.parse(category.color.replaceAll('#', '0xFF'))
+          Color(int.parse(category.color.replaceAll('#', '0xFF')));
-      );
 
       return [
         categoryColor,
@@ -301,8 +301,9 @@ class _SubscriptionCardState extends State<SubscriptionCard>
           borderRadius: 16,
           blur: _isHovering ? 15 : 10,
           width: double.infinity, // 전체 너비를 차지하도록 설정
-          onTap: widget.onTap ?? () async {
+          onTap: widget.onTap ??
-            print('[SubscriptionCard] AnimatedGlassmorphismCard onTap 호출됨 - ${widget.subscription.serviceName}');
+              () async {
+                // ignore: use_build_context_synchronously
                 await AppNavigator.toDetail(context, widget.subscription);
               },
           child: Column(
@@ -349,17 +350,18 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                         crossAxisAlignment: CrossAxisAlignment.start,
                         children: [
                           Row(
-                                      mainAxisAlignment:
+                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                                          MainAxisAlignment.spaceBetween,
                             children: [
                               // 서비스명
                               Flexible(
                                 child: Text(
-                                            _displayName ?? widget.subscription.serviceName,
+                                  _displayName ??
+                                      widget.subscription.serviceName,
                                   style: const TextStyle(
                                     fontWeight: FontWeight.w600,
                                     fontSize: 18,
-                                              color: AppColors.darkNavy,  // color.md 가이드: 메인 텍스트
+                                    color: AppColors
+                                        .darkNavy, // color.md 가이드: 메인 텍스트
                                   ),
                                   maxLines: 1,
                                   overflow: TextOverflow.ellipsis,
@@ -371,7 +373,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                 mainAxisSize: MainAxisSize.min,
                                 children: [
                                   // 이벤트 배지
-                                            if (widget.subscription.isCurrentlyInEvent) ...[
+                                  if (widget
+                                      .subscription.isCurrentlyInEvent) ...[
                                     Container(
                                       padding: const EdgeInsets.symmetric(
                                         horizontal: 8,
@@ -384,8 +387,7 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                             Color(0xFFFF8787),
                                           ],
                                         ),
-                                                  borderRadius:
+                                        borderRadius: BorderRadius.circular(12),
-                                                      BorderRadius.circular(12),
                                       ),
                                       child: Row(
                                         mainAxisSize: MainAxisSize.min,
@@ -418,19 +420,21 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                     ),
                                     decoration: BoxDecoration(
                                       color: AppColors.surfaceColorAlt,
-                                                borderRadius:
+                                      borderRadius: BorderRadius.circular(12),
-                                                    BorderRadius.circular(12),
                                       border: Border.all(
                                         color: AppColors.borderColor,
                                         width: 0.5,
                                       ),
                                     ),
                                     child: Text(
-                                                AppLocalizations.of(context).getBillingCycleName(widget.subscription.billingCycle),
+                                      AppLocalizations.of(context)
+                                          .getBillingCycleName(
+                                              widget.subscription.billingCycle),
                                       style: const TextStyle(
                                         fontSize: 11,
                                         fontWeight: FontWeight.w600,
-                                                  color: AppColors.navyGray,  // color.md 가이드: 서브 텍스트
+                                        color: AppColors
+                                            .navyGray, // color.md 가이드: 서브 텍스트
                                       ),
                                     ),
                                   ),
@@ -443,8 +447,7 @@ class _SubscriptionCardState extends State<SubscriptionCard>
 
                           // 가격 정보
                           Row(
-                                      mainAxisAlignment:
+                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                                          MainAxisAlignment.spaceBetween,
                             children: [
                               // 가격 표시 (이벤트 가격 반영)
                               // 가격 표시 (언어별 통화)
@@ -455,7 +458,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                     return const SizedBox();
                                   }
 
-                                            if (widget.subscription.isCurrentlyInEvent && snapshot.data!.contains('|')) {
+                                  if (widget.subscription.isCurrentlyInEvent &&
+                                      snapshot.data!.contains('|')) {
                                     final prices = snapshot.data!.split('|');
                                     return Row(
                                       children: [
@@ -465,7 +469,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                             fontSize: 14,
                                             fontWeight: FontWeight.w500,
                                             color: AppColors.navyGray,
-                                                      decoration: TextDecoration.lineThrough,
+                                            decoration:
+                                                TextDecoration.lineThrough,
                                           ),
                                         ),
                                         const SizedBox(width: 8),
@@ -485,7 +490,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                       style: TextStyle(
                                         fontSize: 16,
                                         fontWeight: FontWeight.w700,
-                                                  color: widget.subscription.isCurrentlyInEvent
+                                        color: widget
+                                                .subscription.isCurrentlyInEvent
                                             ? const Color(0xFFFF6B6B)
                                             : AppColors.primaryColor,
                                       ),
@@ -506,18 +512,15 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                           .withValues(alpha: 0.1)
                                       : AppColors.successColor
                                           .withValues(alpha: 0.1),
-                                            borderRadius:
+                                  borderRadius: BorderRadius.circular(12),
-                                                BorderRadius.circular(12),
                                 ),
                                 child: Row(
                                   mainAxisSize: MainAxisSize.min,
                                   children: [
                                     Icon(
                                       isNearBilling
-                                                    ? Icons
+                                          ? Icons.access_time_filled_rounded
-                                                        .access_time_filled_rounded
+                                          : Icons.check_circle_rounded,
-                                                    : Icons
-                                                        .check_circle_rounded,
                                       size: 12,
                                       color: isNearBilling
                                           ? AppColors.warningColor
@@ -552,7 +555,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                     vertical: 2,
                                   ),
                                   decoration: BoxDecoration(
-                                              color: const Color(0xFFFF6B6B).withValues(alpha: 0.1),
+                                    color: const Color(0xFFFF6B6B)
+                                        .withValues(alpha: 0.1),
                                     borderRadius: BorderRadius.circular(8),
                                   ),
                                   child: Row(
@@ -566,7 +570,8 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                       const SizedBox(width: 4),
                                       // 이벤트 절약액 표시 (언어별 통화)
                                       FutureBuilder<String>(
-                                                  future: CurrencyUtil.formatEventSavingsWithLocale(
+                                        future: CurrencyUtil
+                                            .formatEventSavingsWithLocale(
                                           widget.subscription,
                                           localeProvider.locale.languageCode,
                                         ),
@@ -589,12 +594,17 @@ class _SubscriptionCardState extends State<SubscriptionCard>
                                 ),
                                 const SizedBox(width: 8),
                                 // 이벤트 종료일까지 남은 일수
-                                          if (widget.subscription.eventEndDate != null) ...[
+                                if (widget.subscription.eventEndDate !=
+                                    null) ...[
                                   Text(
-                                              AppLocalizations.of(context).daysRemaining(widget.subscription.eventEndDate!.difference(DateTime.now()).inDays),
+                                    AppLocalizations.of(context).daysRemaining(
+                                        widget.subscription.eventEndDate!
+                                            .difference(DateTime.now())
+                                            .inDays),
                                     style: const TextStyle(
                                       fontSize: 11,
-                                                color: AppColors.navyGray,  // color.md 가이드: 서브 텍스트
+                                      color: AppColors
+                                          .navyGray, // color.md 가이드: 서브 텍스트
                                     ),
                                   ),
                                 ],

lib/widgets/subscription_list_widget.dart

@@ -12,6 +12,7 @@ import '../services/subscription_url_matcher.dart';
 import './dialogs/delete_confirmation_dialog.dart';
 import './common/snackbar/app_snackbar.dart';
 import '../l10n/app_localizations.dart';
+import '../utils/logger.dart';
 
 /// 카테고리별로 구독 목록을 표시하는 위젯
 class SubscriptionListWidget extends StatelessWidget {
@@ -46,12 +47,17 @@ class SubscriptionListWidget extends StatelessWidget {
                   child: Consumer<CategoryProvider>(
                     builder: (context, categoryProvider, child) {
                       return CategoryHeaderWidget(
-                        categoryName: categoryProvider.getLocalizedCategoryName(context, category),
+                        categoryName: categoryProvider.getLocalizedCategoryName(
+                            context, category),
                         subscriptionCount: subscriptions.length,
-                        totalCostUSD: _calculateTotalByCurrency(subscriptions, 'USD'),
+                        totalCostUSD:
-                        totalCostKRW: _calculateTotalByCurrency(subscriptions, 'KRW'),
+                            _calculateTotalByCurrency(subscriptions, 'USD'),
-                        totalCostJPY: _calculateTotalByCurrency(subscriptions, 'JPY'),
+                        totalCostKRW:
-                        totalCostCNY: _calculateTotalByCurrency(subscriptions, 'CNY'),
+                            _calculateTotalByCurrency(subscriptions, 'KRW'),
+                        totalCostJPY:
+                            _calculateTotalByCurrency(subscriptions, 'JPY'),
+                        totalCostCNY:
+                            _calculateTotalByCurrency(subscriptions, 'CNY'),
                       );
                     },
                   ),
@@ -65,6 +71,7 @@ class SubscriptionListWidget extends StatelessWidget {
                     physics: const NeverScrollableScrollPhysics(),
                     shrinkWrap: true,
                     padding: const EdgeInsets.symmetric(horizontal: 16),
+                    prototypeItem: const SizedBox(height: 156),
                     itemCount: subscriptions.length,
                     itemBuilder: (context, subIndex) {
                       // 각 구독의 지연값 계산 (순차적으로 나타나도록)
@@ -92,33 +99,45 @@ class SubscriptionListWidget extends StatelessWidget {
                           child: StaggeredAnimationItem(
                             index: subIndex,
                             delay: const Duration(milliseconds: 50),
+                            child: RepaintBoundary(
                               child: SwipeableSubscriptionCard(
                                 subscription: subscriptions[subIndex],
                                 onTap: () {
-                                print('[SubscriptionListWidget] SwipeableSubscriptionCard onTap 호출됨');
+                                  Log.d(
-                                AppNavigator.toDetail(context, subscriptions[subIndex]);
+                                      '[SubscriptionListWidget] SwipeableSubscriptionCard onTap 호출됨');
+                                  AppNavigator.toDetail(
+                                      context, subscriptions[subIndex]);
                                 },
                                 onDelete: () async {
                                   // 현재 로케일에 맞는 서비스명 가져오기
-                                final localeProvider = Provider.of<LocaleProvider>(
+                                  final localeProvider =
+                                      Provider.of<LocaleProvider>(
                                     context,
                                     listen: false,
                                   );
-                                final locale = localeProvider.locale.languageCode;
+                                  final locale =
-                                final displayName = await SubscriptionUrlMatcher.getServiceDisplayName(
+                                      localeProvider.locale.languageCode;
-                                  serviceName: subscriptions[subIndex].serviceName,
+                                  final displayName =
+                                      await SubscriptionUrlMatcher
+                                          .getServiceDisplayName(
+                                    serviceName:
+                                        subscriptions[subIndex].serviceName,
                                     locale: locale,
                                   );
 
                                   // 삭제 확인 다이얼로그 표시
-                                final shouldDelete = await DeleteConfirmationDialog.show(
+                                  if (!context.mounted) return;
+                                  final shouldDelete =
+                                      await DeleteConfirmationDialog.show(
                                     context: context,
                                     serviceName: displayName,
                                   );
+                                  if (!context.mounted) return;
 
-                                if (shouldDelete && context.mounted) {
+                                  if (shouldDelete) {
                                     // 사용자가 확인한 경우에만 삭제 진행
-                                  final provider = Provider.of<SubscriptionProvider>(
+                                    final provider =
+                                        Provider.of<SubscriptionProvider>(
                                       context,
                                       listen: false,
                                     );
@@ -129,7 +148,8 @@ class SubscriptionListWidget extends StatelessWidget {
                                     if (context.mounted) {
                                       AppSnackBar.showError(
                                         context: context,
-                                      message: AppLocalizations.of(context).subscriptionDeleted(displayName),
+                                        message: AppLocalizations.of(context)
+                                            .subscriptionDeleted(displayName),
                                         icon: Icons.delete_forever_rounded,
                                       );
                                     }
@@ -138,6 +158,7 @@ class SubscriptionListWidget extends StatelessWidget {
                               ),
                             ),
                           ),
+                        ),
                       );
                     },
                   ),
@@ -152,7 +173,8 @@ class SubscriptionListWidget extends StatelessWidget {
   }
 
   /// 특정 통화의 총 합계를 계산합니다.
-  double _calculateTotalByCurrency(List<SubscriptionModel> subscriptions, String currency) {
+  double _calculateTotalByCurrency(
+      List<SubscriptionModel> subscriptions, String currency) {
     return subscriptions
         .where((sub) => sub.currency == currency)
         .fold(0.0, (sum, sub) => sum + sub.monthlyCost);

lib/widgets/swipeable_subscription_card.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/gestures.dart';
 import '../models/subscription_model.dart';
 import '../utils/haptic_feedback_helper.dart';
 import 'subscription_card.dart';
@@ -29,7 +28,6 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
   static const double _tapTolerance = 20.0; // 탭 허용 범위
   static const double _actionThresholdPercent = 0.15;
   static const double _deleteThresholdPercent = 0.40;
-  static const int _tapDurationMs = 500;
   static const double _velocityThreshold = 800.0;
   // static const double _animationDuration = 300.0;
 
@@ -39,8 +37,7 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
 
   // 제스처 추적
   Offset? _startPosition;
-  DateTime? _startTime;
+  // 제스처 관련 보조 변수(간소화)
-  bool _isValidTap = true;
 
   // 상태 관리
   double _currentOffset = 0;
@@ -95,8 +92,6 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
   // 제스처 핸들러
   void _handlePanStart(DragStartDetails details) {
     _startPosition = details.localPosition;
-    _startTime = DateTime.now();
-    _isValidTap = true;
     _hapticTriggered = false;
     _controller.stop();
   }
@@ -104,12 +99,7 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
   void _handlePanUpdate(DragUpdateDetails details) {
     final currentPosition = details.localPosition;
     final delta = currentPosition.dx - _startPosition!.dx;
-    final distance = (currentPosition - _startPosition!).distance;
+    // 탭/스와이프 판별 거리는 외부에서 사용하지 않아 제거
-
-    // 탭 유효성 검사 - 거리가 허용 범위를 벗어나면 스와이프로 간주
-    if (distance > _tapTolerance) {
-      _isValidTap = false;
-    }
 
     // 카드 이동
     setState(() {
@@ -129,14 +119,7 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
   }
 
   // 헬퍼 메서드
-  void _processTap() {
+  // 탭 처리는 SubscriptionCard에서 수행
-    print('[SwipeableSubscriptionCard] _processTap 호출됨');
-    if (widget.onTap != null) {
-      print('[SwipeableSubscriptionCard] onTap 콜백 실행');
-      widget.onTap!();
-    }
-    _animateToOffset(0);
-  }
 
   void _processSwipe(double velocity) {
     final extent = _currentOffset.abs();
@@ -258,7 +241,8 @@ class _SwipeableSubscriptionCardState extends State<SwipeableSubscriptionCard>
           angle: _currentOffset / 2000,
           child: SubscriptionCard(
             subscription: widget.subscription,
-            onTap: widget.onTap,  // onTap 콜백을 전달하여 SubscriptionCard 내부에서도 탭 처리 가능하도록 함
+            onTap: widget
+                .onTap, // onTap 콜백을 전달하여 SubscriptionCard 내부에서도 탭 처리 가능하도록 함
           ),
         ),
       ),

lib/widgets/themed_text.dart

@@ -35,7 +35,8 @@ class ThemedText extends StatelessWidget {
   });
 
   /// 배경 밝기에 따른 텍스트 색상 결정
-  static Color getContrastColor(BuildContext context, {
+  static Color getContrastColor(
+    BuildContext context, {
     bool forceLight = false,
     bool forceDark = false,
   }) {
@@ -58,21 +59,22 @@ class ThemedText extends StatelessWidget {
   /// 글래스모피즘 컨텍스트인지 확인
   static bool _isGlassmorphicContext(BuildContext context) {
     // 부모 위젯 체인에서 글래스모피즘 카드가 있는지 확인
-    final glassmorphic = context.findAncestorWidgetOfExactType<GlassmorphicIndicator>();
+    final glassmorphic =
+        context.findAncestorWidgetOfExactType<GlassmorphicIndicator>();
     return glassmorphic != null;
   }
 
   @override
   Widget build(BuildContext context) {
-    final textColor = color ?? getContrastColor(
+    final textColor = color ??
+        getContrastColor(
           context,
           forceLight: forceLight,
           forceDark: forceDark,
         );
 
-    final finalColor = opacity != null 
+    final finalColor =
-        ? textColor.withValues(alpha: opacity!)
+        opacity != null ? textColor.withValues(alpha: opacity!) : textColor;
-        : textColor;
 
     final defaultStyle = DefaultTextStyle.of(context).style;
 

lib/widgets/website_icon.dart

@@ -104,8 +104,6 @@ class FaviconCache {
 
 // 구글 파비콘 API 서비스
 class GoogleFaviconService {
-
-
   // 구글 파비콘 API URL 생성
   static String getFaviconUrl(String domain, int size) {
     final directUrl =
@@ -137,7 +135,8 @@ class GoogleFaviconService {
   static String getBase64PlaceholderIcon(String serviceName, Color color) {
     // 간단한 SVG 생성 (서비스 이름의 첫 글자를 원 안에 표시)
     final initial = serviceName.isNotEmpty ? serviceName[0].toUpperCase() : '?';
-    final colorHex = color.toARGB32().toRadixString(16).padLeft(8, '0').substring(2);
+    final colorHex =
+        color.toARGB32().toRadixString(16).padLeft(8, '0').substring(2);
 
     // 공백 없이 SVG 생성 (공백이 있으면 Base64 디코딩 후 이미지 로드 시 문제 발생)
     final svgContent =
@@ -568,7 +567,8 @@ class _WebsiteIconState extends State<WebsiteIcon>
           boxShadow: widget.isHovered
               ? [
                   BoxShadow(
-                    color: _getColorFromName().withValues(alpha: 0.3), // 약 0.3 알파값
+                    color:
+                        _getColorFromName().withValues(alpha: 0.3), // 약 0.3 알파값
                     blurRadius: 12,
                     spreadRadius: 0,
                     offset: const Offset(0, 4),

scripts/check.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "==> Formatting check"
+if command -v dart >/dev/null 2>&1; then
+  dart format --output=none --set-exit-if-changed .
+else
+  echo "dart not found in PATH" >&2
+  exit 1
+fi
+
+echo "==> Static analysis"
+flutter analyze
+
+echo "==> Tests"
+flutter test
+
+echo "\nAll checks passed."
+

scripts/fix.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "==> Formatting code"
+dart format .
+
+echo "Formatting complete."
+

test/exchange_rate_service_test.dart

@@ -0,0 +1,12 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:submanager/services/exchange_rate_service.dart';
+
+void main() {
+  test('USD -> KRW conversion returns non-null using defaults when offline',
+      () async {
+    final service = ExchangeRateService();
+    final krw = await service.convertUsdToTarget(1.0, 'KRW');
+    expect(krw, isNotNull);
+    expect(krw, greaterThan(0));
+  });
+}

test/url_matcher_test.dart

@@ -0,0 +1,19 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:submanager/services/subscription_url_matcher.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('extractDomain parses host correctly', () async {
+    await SubscriptionUrlMatcher.initialize();
+    final domain =
+        SubscriptionUrlMatcher.extractDomain('https://www.netflix.com/kr');
+    expect(domain, 'netflix');
+  });
+
+  test('findMatchingUrl finds known service', () async {
+    await SubscriptionUrlMatcher.initialize();
+    final url = SubscriptionUrlMatcher.findMatchingUrl('넷플릭스');
+    expect(url, isNotNull);
+  });
+}