Major UI/UX and architecture improvements

- Implemented new navigation system with NavigationProvider and route management
- Added adaptive theme system with ThemeProvider for better theme handling
- Introduced glassmorphism design elements (app bars, scaffolds, cards)
- Added advanced animations (spring animations, page transitions, staggered lists)
- Implemented performance optimizations (memory manager, lazy loading)
- Refactored Analysis screen into modular components
- Added floating navigation bar with haptic feedback
- Improved subscription cards with swipe actions
- Enhanced skeleton loading with better animations
- Added cached network image support
- Improved overall app architecture and code organization

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/main.dart

@@ -1,27 +1,28 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:hive_flutter/hive_flutter.dart';
-import 'package:flutter/foundation.dart' show kIsWeb;
+import 'package:flutter/foundation.dart' show kIsWeb, kDebugMode;
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'models/subscription_model.dart';
 import 'models/category_model.dart';
 import 'providers/subscription_provider.dart';
 import 'providers/app_lock_provider.dart';
 import 'providers/notification_provider.dart';
-import 'screens/main_screen.dart';
-import 'screens/app_lock_screen.dart';
+import 'providers/navigation_provider.dart';
 import 'services/notification_service.dart';
 import 'providers/category_provider.dart';
 import 'providers/locale_provider.dart';
+import 'providers/theme_provider.dart';
 import 'l10n/app_localizations.dart';
-import 'theme/app_theme.dart';
-import 'screens/splash_screen.dart';
-import 'package:cached_network_image/cached_network_image.dart';
+import 'theme/adaptive_theme.dart';
+import 'routes/app_routes.dart';
+import 'navigation/app_navigation_observer.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:google_mobile_ads/google_mobile_ads.dart';
 import 'dart:io' show Platform;
-
-final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
+import 'utils/memory_manager.dart';
+import 'utils/performance_optimizer.dart';
+import 'navigator_key.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -31,17 +32,25 @@ Future<void> main() async {
     await MobileAds.instance.initialize();
   }
 
+  // 성능 최적화 설정
+  MemoryManager.optimizeImageCache();
+  MemoryManager().startAutoCleanup();
+  
   // 앱 시작 시 이미지 캐시 관리
   try {
     // 메모리 이미지 캐시는 유지하지만 필요한 경우 삭제할 수 있도록 준비
-    final cache = PaintingBinding.instance.imageCache;
 
     // 오래된 디스크 캐시 파일만 지우기 (새로운 것은 유지)
     await DefaultCacheManager().emptyCache();
 
-    print('이미지 캐시 관리 초기화 완료');
+    if (kDebugMode) {
+      print('이미지 캐시 관리 초기화 완료');
+      PerformanceOptimizer.checkConstOptimization();
+    }
   } catch (e) {
-    print('캐시 초기화 오류: $e');
+    if (kDebugMode) {
+      print('캐시 초기화 오류: $e');
+    }
   }
 
   // Hive 초기화
@@ -58,11 +67,14 @@ Future<void> main() async {
   final categoryProvider = CategoryProvider();
   final localeProvider = LocaleProvider();
   final notificationProvider = NotificationProvider();
+  final themeProvider = ThemeProvider();
+  final navigationProvider = NavigationProvider();
 
   await subscriptionProvider.init();
   await categoryProvider.init();
   await localeProvider.init();
   await notificationProvider.init();
+  await themeProvider.initialize();
 
   // NotificationProvider에 SubscriptionProvider 연결 (알림 재예약용)
   // SRP 원칙에 따라 다른 Provider 객체를 명시적으로 주입
@@ -89,6 +101,8 @@ Future<void> main() async {
         ChangeNotifierProvider(create: (_) => AppLockProvider(appLockBox)),
         ChangeNotifierProvider(create: (_) => notificationProvider),
         ChangeNotifierProvider(create: (_) => localeProvider),
+        ChangeNotifierProvider(create: (_) => themeProvider),
+        ChangeNotifierProvider(create: (_) => navigationProvider),
       ],
       child: const SubManagerApp(),
     ),
@@ -100,12 +114,15 @@ class SubManagerApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Consumer<LocaleProvider>(
-      builder: (context, localeProvider, child) {
+    return Consumer2<LocaleProvider, ThemeProvider>(
+      builder: (context, localeProvider, themeProvider, child) {
+        // 시스템 UI 오버레이 스타일 적용
+        AdaptiveTheme.applySystemUIOverlay(context);
+        
         return MaterialApp(
           title: 'SubManager',
           debugShowCheckedModeBanner: false,
-          theme: AppTheme.lightTheme,
+          theme: themeProvider.getTheme(context),
           locale: localeProvider.locale,
           localizationsDelegates: const [
             AppLocalizationsDelegate(),
@@ -118,7 +135,24 @@ class SubManagerApp extends StatelessWidget {
             Locale('ko'),
           ],
           navigatorKey: navigatorKey,
-          home: const SplashScreen(),
+          navigatorObservers: [AppNavigationObserver()],
+          initialRoute: AppRoutes.splash,
+          routes: AppRoutes.getRoutes(),
+          onGenerateRoute: AppRoutes.generateRoute,
+          builder: (context, child) {
+            // 성능 최적화 및 메모리 관리
+            if (kDebugMode) {
+              PerformanceOptimizer().startFrameMonitoring();
+            }
+            
+            return MediaQuery(
+              data: MediaQuery.of(context).copyWith(
+                textScaler: TextScaler.linear(themeProvider.largeText ? 1.2 : 1.0),
+                disableAnimations: themeProvider.reduceMotion,
+              ),
+              child: child!,
+            );
+          },
         );
       },
     );