Added a configurable Opus bitrate for audio transcription

app/MindWork AI Studio/Settings/DataModel/DataApp.cs

@@ -112,6 +112,11 @@ public sealed class DataApp(Expression<Func<Data, DataApp>>? configSelection = n
     /// </summary>
     public string UseTranscriptionProvider { get; set; } = ManagedConfiguration.Register(configSelection, n => n.UseTranscriptionProvider, string.Empty);
 
+    /// <summary>
+    /// The Opus bitrate used when normalizing uploaded audio/video for transcription.
+    /// </summary>
+    public TranscriptionOpusBitrate OpusBitrate { get; set; } = ManagedConfiguration.Register(configSelection, n => n.OpusBitrate, TranscriptionOpusBitrate.KBPS_128);
+
     /// <summary>
     /// The global keyboard shortcut for toggling voice recording.
     /// Uses Tauri's shortcut format, e.g., "CmdOrControl+1" (Cmd+1 on macOS, Ctrl+1 on Windows/Linux).