iOS: stem playlist refresh and covers, download queue page, reorderable Library, whole-library radio

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

ios/Stemify/UI/RootView.swift

@@ -61,6 +61,7 @@ struct RootView: View {
         case .Playlists: PlaylistsScreen()
         case .Genres: GenresScreen()
         case .Downloads: DownloadsScreen()
+        case .DownloadQueue: DownloadQueueScreen()
         case .TabBar: TabBarScreen()
         case .WebRadio: WebRadioScreen()
         case .GenrePage(let g): GenreScreen(genre: g)
@@ -68,6 +69,7 @@ struct RootView: View {
         case .EqFilters(let id): EqFiltersScreen(profileId: id)
         case .EqFilterPage(let id, let f): EqFilterPage(profileId: id, filterId: f)
         case .Servers: ServersScreen()
+        case .ServerList: ServerListScreen()
         case .Server(let id): ServerScreen(id: id)
         case .StemServer: StemServerScreen()
         case .Quality: QualityScreen()