一堆乱七八糟的修改

播放页面增加桌面版

lib/features/player/playlist_provider.dart

@@ -1,18 +0,0 @@
-import 'package:riverpod_annotation/riverpod_annotation.dart';
-import 'package:shelfsdk/audiobookshelf_api.dart';
-import 'package:vaani/features/player/playlist.dart';
-
-part 'playlist_provider.g.dart';
-
-@riverpod
-class Playlist extends _$Playlist {
-  @override
-  AudiobookPlaylist build() {
-    return AudiobookPlaylist();
-  }
-
-  void add(BookExpanded item) {
-    state.add(item);
-    ref.notifyListeners();
-  }
-}