chore: bootstrap flutter reader app skeleton

lib/app/app.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../core/theme/app_theme.dart';
+import 'router/app_router.dart';
+
+class ReaderApp extends ConsumerWidget {
+  const ReaderApp({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final router = ref.watch(appRouterProvider);
+
+    return MaterialApp.router(
+      title: 'Reader App',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.lightTheme,
+      routerConfig: router,
+    );
+  }
+}

lib/app/router/app_router.dart

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+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../features/auth/presentation/login_screen.dart';
+import '../../features/bookshelf/presentation/bookshelf_screen.dart';
+import '../../features/comments/presentation/comments_screen.dart';
+import '../../features/genres/presentation/genres_screen.dart';
+import '../../features/home/presentation/home_screen.dart';
+import '../../features/novel/presentation/novel_detail_screen.dart';
+import '../../features/profile/presentation/profile_screen.dart';
+import '../../features/reader/presentation/reader_screen.dart';
+import '../../features/search/presentation/search_screen.dart';
+import '../../features/settings/presentation/settings_screen.dart';
+import '../../features/splash/presentation/splash_screen.dart';
+import '../../shared/widgets/app_shell.dart';
+import 'route_names.dart';
+
+final appRouterProvider = Provider<GoRouter>((ref) {
+  return GoRouter(
+    initialLocation: RouteNames.splash,
+    routes: [
+      GoRoute(
+        path: RouteNames.splash,
+        builder: (context, state) => const SplashScreen(),
+      ),
+      GoRoute(
+        path: RouteNames.login,
+        builder: (context, state) => const LoginScreen(),
+      ),
+      ShellRoute(
+        builder: (context, state, child) => AppShell(child: child),
+        routes: [
+          GoRoute(
+            path: RouteNames.home,
+            builder: (context, state) => const HomeScreen(),
+          ),
+          GoRoute(
+            path: RouteNames.search,
+            builder: (context, state) => const SearchScreen(),
+          ),
+          GoRoute(
+            path: RouteNames.genres,
+            builder: (context, state) => const GenresScreen(),
+          ),
+          GoRoute(
+            path: RouteNames.bookshelf,
+            builder: (context, state) => const BookshelfScreen(),
+          ),
+          GoRoute(
+            path: RouteNames.profile,
+            builder: (context, state) => const ProfileScreen(),
+          ),
+        ],
+      ),
+      GoRoute(
+        path: RouteNames.novelDetail,
+        builder: (_, state) => NovelDetailScreen(
+          novelId: state.uri.queryParameters['id'] ?? '',
+        ),
+      ),
+      GoRoute(
+        path: RouteNames.reader,
+        builder: (_, state) => ReaderScreen(
+          chapterId: state.uri.queryParameters['chapterId'] ?? '',
+        ),
+      ),
+      GoRoute(
+        path: RouteNames.comments,
+        builder: (_, state) => CommentsScreen(
+          novelId: state.uri.queryParameters['novelId'] ?? '',
+          chapterId: state.uri.queryParameters['chapterId'],
+        ),
+      ),
+      GoRoute(
+        path: RouteNames.settings,
+        builder: (context, state) => const SettingsScreen(),
+      ),
+    ],
+  );
+});

lib/app/router/route_names.dart

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+class RouteNames {
+  RouteNames._();
+
+  static const splash = '/';
+  static const home = '/home';
+  static const login = '/login';
+  static const search = '/search';
+  static const genres = '/genres';
+  static const novelDetail = '/novel';
+  static const reader = '/reader';
+  static const bookshelf = '/bookshelf';
+  static const comments = '/comments';
+  static const profile = '/profile';
+  static const settings = '/settings';
+}