fix: align player cascade type to IStreamingPlayerService so consumers stop receiving null

DeepDrftPublic.Client/Controls/AudioPlayerProvider.razor.cs

@@ -11,7 +11,7 @@ public partial class AudioPlayerProvider : ComponentBase, IAsyncDisposable
     [Inject] public required TrackMediaClient TrackMediaClient { get; set; }
     [Inject] public required ILogger<StreamingAudioPlayerService> Logger { get; set; }
 
-    private StreamingAudioPlayerService? _audioPlayerService;
+    private IStreamingPlayerService? _audioPlayerService;
 
     [Parameter] public RenderFragment? ChildContent { get; set; }
 
@@ -38,10 +38,10 @@ public partial class AudioPlayerProvider : ComponentBase, IAsyncDisposable
     /// </summary>
     public async ValueTask DisposeAsync()
     {
-        if (_audioPlayerService != null)
+        if (_audioPlayerService is IAsyncDisposable disposable)
         {
-            await _audioPlayerService.DisposeAsync();
-            _audioPlayerService = null;
+            await disposable.DisposeAsync();
         }
+        _audioPlayerService = null;
     }
 }

DeepDrftPublic.Client/Pages/Home.razor

@@ -226,5 +226,5 @@
 </section>
 
 @code {
-    [CascadingParameter] public IPlayerService? Player { get; set; }
+    [CascadingParameter] public IStreamingPlayerService? Player { get; set; }
 }

DeepDrftPublic.Client/Pages/TracksView.razor.cs

@@ -9,7 +9,7 @@ namespace DeepDrftPublic.Client.Pages;
 public partial class TracksView : ComponentBase
 {
     [Inject] public required TracksViewModel ViewModel { get; set; }
-    [CascadingParameter] public required IPlayerService PlayerService { get; set; }
+    [CascadingParameter] public required IStreamingPlayerService PlayerService { get; set; }
     
     private TrackDto? _selectedTrack = null;
     private int _clickCount = 0;