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lib/main.dart

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+/// Application entry point: wires services, Provider, and [MaterialApp].
+library;
+
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import 'providers/item_provider.dart';
+import 'providers/theme_provider.dart';
+import 'screens/splash_screen.dart';
+import 'services/item_repository.dart';
+import 'services/storage_service.dart';
+import 'utils/app_theme.dart';
+import 'utils/constants.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  final storage = StorageService();
+  await storage.init();
+
+  runApp(
+    MyApp(
+      storage: storage,
+      repository: ItemRepository(useRemoteData: storage.useRemoteData),
+    ),
+  );
+}
+
+/// Root widget. Theme and catalog controllers live here so every route
+/// can `context.watch` them.
+class MyApp extends StatelessWidget {
+  const MyApp({
+    super.key,
+    required this.storage,
+    required this.repository,
+  });
+
+  final StorageService storage;
+  final ItemRepository repository;
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (_) => ThemeController(storage)),
+        ChangeNotifierProvider(
+          create: (_) => ItemController(
+            repository: repository,
+            storage: storage,
+          )..loadItems(),
+        ),
+      ],
+      child: const _MaterialRoot(),
+    );
+  }
+}
+
+class _MaterialRoot extends StatelessWidget {
+  const _MaterialRoot();
+
+  @override
+  Widget build(BuildContext context) {
+    final themeMode = context.watch<ThemeController>().themeMode;
+
+    return MaterialApp(
+      title: kAppName,
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.light(),
+      darkTheme: AppTheme.dark(),
+      themeMode: themeMode,
+      home: const SplashScreen(),
+    );
+  }
+}