docs: Update documentation for 145 files

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docs/auriondocs/Code/src/EchoHub.Client/Services/AudioPlaybackService.cs.md

@@ -8,17 +8,12 @@ public class AudioPlaybackService
 ```
 
 
-AudioPlaybackService is a thread-safe wrapper around an underlying audio player that exposes asynchronous playback controls and a finished event surface. Use it when you need serialized access to play, pause, resume, or stop audio and a consistent event interface without managing locks and state machines yourself.
+AudioPlaybackService provides a thread-safe, asynchronous facade for audio playback using a private `Player` instance. It exposes the playback state via `IsPlaying` and `IsPaused`, and it forwards a `PlaybackFinished` event when the underlying `Player` completes playback. All public operations are serialized with a private `SemaphoreSlim` named `_lock` to prevent concurrent access to the player. When you call `PlayAsync`, if something is already playing it stops it before starting the new file; `PauseAsync`, `ResumeAsync`, and [`StopAsync`](../../EchoHub.Server/Services/ServerDirectoryService.cs.md) similarly acquire the lock, perform the appropriate operation if possible, and log any exceptions with `Log.Warning`. Volume is controlled via `SetVolumeAsync`, which clamps the requested volume to a maximum of 100 using `Math.Min`.
 
 ## Remarks
-To prevent concurrent calls from interfering with playback state, the class serializes all operations using a SemaphoreSlim. When PlayAsync is invoked while something is already playing, it stops the current track before starting the new file; PauseAsync, ResumeAsync, and StopAsync perform their actions only when appropriate states are detected. The PlaybackFinished event is forwarded from the internal player, so callers can react to completion without depending on the concrete implementation of the _player. Exceptions raised by the underlying player are caught and logged with a warning, ensuring playback issues do not crash the application.
-
-## Example
-```csharp
-// Example usage
-var audio = new AudioPlaybackService();
-await audio.PlayAsync("path/to/file.mp3");
-```
+This abstraction centralizes concurrency concerns and error handling around audio playback. By bridging the `Player` with a single, serialized surface, it reduces race conditions when multiple callers request playback from different parts of the application. The `PlaybackFinished` event provides a clean notification channel to consumers without exposing the internal player, enabling a decoupled UI or service layer to react to completion.
 
 ## Notes
-- This wrapper serializes calls to avoid race conditions; however, it is not cancellation-aware. If you need to cancel an in-flight operation, extend the class with cancellation support or a dedicated cancellation mechanism.
+- Exceptions during playback operations are swallowed after being logged with `Log.Warning`, so callers do not observe crashes but must rely on the logs to diagnose issues.
+- All playback-related methods acquire the `_lock` semaphore, meaning long-running operations inside any call can block other playback requests and should be kept短-lived to avoid contention.
+- `SetVolumeAsync` caps the volume at 100 via `Math.Min`, ensuring the underlying player never receives an out-of-range value.