✨ Rebuilt router with go router

lib/router.dart

@@ -0,0 +1,59 @@
+import 'package:go_router/go_router.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:groovybox/data/db.dart';
+import 'package:groovybox/data/playlist_repository.dart';
+import 'package:groovybox/ui/screens/album_detail_screen.dart';
+import 'package:groovybox/ui/screens/library_screen.dart';
+import 'package:groovybox/ui/screens/player_screen.dart';
+import 'package:groovybox/ui/screens/playlist_detail_screen.dart';
+import 'package:groovybox/ui/screens/settings_screen.dart';
+import 'package:groovybox/ui/shell.dart';
+
+// Route names
+class AppRoutes {
+  static const String library = '/';
+  static const String player = '/player';
+  static const String settings = '/settings';
+  static const String albumDetail = '/album';
+  static const String playlistDetail = '/playlist';
+}
+
+// Router provider that can be accessed from anywhere in the app
+final routerProvider = Provider<GoRouter>((ref) {
+  return GoRouter(
+    initialLocation: AppRoutes.library,
+    routes: [
+      ShellRoute(
+        builder: (context, state, child) => Shell(child: child),
+        routes: [
+          GoRoute(
+            path: AppRoutes.library,
+            builder: (context, state) => const LibraryScreen(),
+          ),
+          GoRoute(
+            path: AppRoutes.player,
+            builder: (context, state) => const PlayerScreen(),
+          ),
+          GoRoute(
+            path: AppRoutes.settings,
+            builder: (context, state) => const SettingsScreen(),
+          ),
+          GoRoute(
+            path: AppRoutes.albumDetail,
+            builder: (context, state) {
+              final album = state.extra as AlbumData;
+              return AlbumDetailScreen(album: album);
+            },
+          ),
+          GoRoute(
+            path: AppRoutes.playlistDetail,
+            builder: (context, state) {
+              final playlist = state.extra as Playlist;
+              return PlaylistDetailScreen(playlist: playlist);
+            },
+          ),
+        ],
+      ),
+    ],
+  );
+});