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lib/app/app.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:responsive_framework/responsive_framework.dart';
+
+import '../core/router/app_router.dart';
+import 'app_providers.dart';
+import 'theme/app_theme.dart';
+
+/// 앱 루트 위젯
+class App extends ConsumerWidget {
+  const App({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final router = ref.watch(appRouterProvider);
+    final themeMode = ref.watch(themeModeNotifierProvider);
+
+    return MaterialApp.router(
+      title: 'Flutter Frame',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.light,
+      darkTheme: AppTheme.dark,
+      themeMode: themeMode,
+      routerConfig: router,
+      builder: (context, child) => ResponsiveBreakpoints.builder(
+        child: child!,
+        breakpoints: const [
+          Breakpoint(start: 0, end: 450, name: MOBILE),
+          Breakpoint(start: 451, end: 800, name: TABLET),
+          Breakpoint(start: 801, end: 1920, name: DESKTOP),
+          Breakpoint(start: 1921, end: double.infinity, name: '4K'),
+        ],
+      ),
+    );
+  }
+}