feat: Add UI optional UI locking when microphone is hot (#2484)

src/card-controller/microphone-manager.ts

@@ -119,6 +119,13 @@ export class MicrophoneManager {
     return !this._stream || this._stream.getTracks().every((track) => !track.enabled);
   }
 
+  public isLocking(): boolean {
+    // The user-facing rationale: while the microphone is hot (e.g. mid 2-way
+    // audio), prevent accidental swipes, pauses, view changes.
+    const microphoneConfig = this._api.getConfigManager().getConfig()?.live.microphone;
+    return !!microphoneConfig?.lock && !this.isMuted();
+  }
+
   private _setDesiredMuteOnStream(): void {
     this._stream?.getTracks().forEach((track) => {
       track.enabled = !this._desireMute;