Auto-throttle visualizer under sustained Opus decode pressure; strip streaming investigation instrumentation

DeepDrftPublic.Client/Services/AudioPlayerService.cs

@@ -186,10 +186,6 @@ public abstract class AudioPlayerService : IPlayerService, IAsyncDisposable
             var result = await _audioInterop.UnloadAsync(PlayerId);
             if (result.Success)
             {
-                // [RELOAD-DIAG] One of two base-class sites that null Duration (the other is
-                // OnPlaybackEndCallback). Logged so a run can attribute a "Duration set from header"
-                // re-fire to this path vs the spurious end-callback. Trivially removable.
-                OnDurationNulledDiag("Unload");
                 IsPlaying = false;
                 IsPaused = false;
                 CurrentTime = 0;
@@ -282,12 +278,6 @@ public abstract class AudioPlayerService : IPlayerService, IAsyncDisposable
 
     private async Task OnPlaybackEndCallback()
     {
-        // [RELOAD-DIAG] The second base-class Duration-null site — the JS PlaybackScheduler's
-        // end-of-playback callback. A false (mid-stream) fire here is the Opus-startup bug: it nulls
-        // Duration (forcing a second "Duration set from header"), sets IsLoaded=false/CurrentTime=0,
-        // and raises TrackEnded (premature queue auto-advance). After the scheduler fix this must fire
-        // only on genuine end-of-track. Trivially removable.
-        OnDurationNulledDiag("OnPlaybackEndCallback");
         IsPlaying = false;
         IsPaused = false;
         IsLoaded = false;
@@ -318,15 +308,6 @@ public abstract class AudioPlayerService : IPlayerService, IAsyncDisposable
     /// </summary>
     protected virtual void OnPlaybackEnded() { }
 
-    /// <summary>
-    /// [RELOAD-DIAG] Diagnostic seam — invoked at each base-class site that nulls <see cref="Duration"/>
-    /// (<see cref="Unload"/> and <see cref="OnPlaybackEndCallback"/>), naming the caller. The streaming
-    /// subclass overrides this to emit a tagged log via its logger so a run can attribute a re-fired
-    /// "Duration set from header" to its true cause. No-op in the base; trivially removable.
-    /// </summary>
-    protected virtual void OnDurationNulledDiag(string caller) { }
-
-
     protected async Task EnsureInitializedAsync()
     {
         if (!IsInitialized)