Fix mobile app submodule initialization and cleanup

- Removed incorrect swingmusic_mobile directory
- Properly initialized swingmusic_mobile submodule from swingmusic-mobile.git
- Clean submodule configuration for unified release workflow

swingmusic_mobile/lib/data/models/search_results_model.dart

@@ -1,153 +0,0 @@
-import 'package:equatable/equatable.dart';
-import 'album_model.dart';
-import 'folder_model.dart';
-import 'playlist_model.dart';
-import 'track_model.dart';
-
-class SearchResultsModel extends Equatable {
-  final List<TrackModel> tracks;
-  final List<AlbumModel> albums;
-  final List<ArtistModel> artists;
-  final List<FolderModel> folders;
-  final List<PlaylistModel> playlists;
-
-  const SearchResultsModel({
-    this.tracks = const [],
-    this.albums = const [],
-    this.artists = const [],
-    this.folders = const [],
-    this.playlists = const [],
-  });
-
-  SearchResultsModel copyWith({
-    List<TrackModel>? tracks,
-    List<AlbumModel>? albums,
-    List<ArtistModel>? artists,
-    List<FolderModel>? folders,
-    List<PlaylistModel>? playlists,
-  }) {
-    return SearchResultsModel(
-      tracks: tracks ?? this.tracks,
-      albums: albums ?? this.albums,
-      artists: artists ?? this.artists,
-      folders: folders ?? this.folders,
-      playlists: playlists ?? this.playlists,
-    );
-  }
-
-  factory SearchResultsModel.fromJson(Map<String, dynamic> json) {
-    return SearchResultsModel(
-      tracks: (json['tracks'] as List<dynamic>?)
-          ?.map((track) => TrackModel.fromJson(track))
-          .toList() ?? [],
-      albums: (json['albums'] as List<dynamic>?)
-          ?.map((album) => AlbumModel.fromJson(album))
-          .toList() ?? [],
-      artists: (json['artists'] as List<dynamic>?)
-          ?.map((artist) => ArtistModel.fromJson(artist))
-          .toList() ?? [],
-      folders: (json['folders'] as List<dynamic>?)
-          ?.map((folder) => FolderModel.fromJson(folder))
-          .toList() ?? [],
-      playlists: (json['playlists'] as List<dynamic>?)
-          ?.map((playlist) => PlaylistModel.fromJson(playlist))
-          .toList() ?? [],
-    );
-  }
-
-  Map<String, dynamic> toJson() {
-    return {
-      'tracks': tracks.map((track) => track.toJson()).toList(),
-      'albums': albums.map((album) => album.toJson()).toList(),
-      'artists': artists.map((artist) => artist.toJson()).toList(),
-      'folders': folders.map((folder) => folder.toJson()).toList(),
-      'playlists': playlists.map((playlist) => playlist.toJson()).toList(),
-    };
-  }
-
-  bool get isEmpty => 
-      tracks.isEmpty && 
-      albums.isEmpty && 
-      artists.isEmpty && 
-      folders.isEmpty && 
-      playlists.isEmpty;
-
-  bool get isNotEmpty => !isEmpty;
-
-  @override
-  List<Object?> get props => [
-        tracks,
-        albums,
-        artists,
-        folders,
-        playlists,
-      ];
-}
-
-class TopSearchResultsModel extends Equatable {
-  final List<TopResultItemModel> topResults;
-  final SearchResultsModel allResults;
-
-  const TopSearchResultsModel({
-    required this.topResults,
-    required this.allResults,
-  });
-
-  factory TopSearchResultsModel.fromJson(Map<String, dynamic> json) {
-    return TopSearchResultsModel(
-      topResults: (json['top_results'] as List<dynamic>?)
-          ?.map((item) => TopResultItemModel.fromJson(item))
-          .toList() ?? [],
-      allResults: SearchResultsModel.fromJson(json['all_results'] ?? {}),
-    );
-  }
-
-  Map<String, dynamic> toJson() {
-    return {
-      'top_results': topResults.map((item) => item.toJson()).toList(),
-      'all_results': allResults.toJson(),
-    };
-  }
-
-  @override
-  List<Object?> get props => [topResults, allResults];
-}
-
-class TopResultItemModel extends Equatable {
-  final String type; // 'track', 'album', 'artist', 'folder', 'playlist'
-  final String title;
-  final String subtitle;
-  final String? image;
-  final dynamic data; // The actual model object
-
-  const TopResultItemModel({
-    required this.type,
-    required this.title,
-    required this.subtitle,
-    this.image,
-    this.data,
-  });
-
-  factory TopResultItemModel.fromJson(Map<String, dynamic> json) {
-    return TopResultItemModel(
-      type: json['type'] ?? '',
-      title: json['title'] ?? '',
-      subtitle: json['subtitle'] ?? '',
-      image: json['image'],
-      data: json['data'],
-    );
-  }
-
-  Map<String, dynamic> toJson() {
-    return {
-      'type': type,
-      'title': title,
-      'subtitle': subtitle,
-      'image': image,
-      'data': data,
-    };
-  }
-
-  @override
-  List<Object?> get props => [type, title, subtitle, image, data];
-}