refactor: migrate console usage to shared loggers

js/services/playbackService.js

@@ -1,3 +1,4 @@
+import { userLogger } from "../utils/logger.js";
 // js/services/playbackService.js
 
 class SimpleEventEmitter {
@@ -73,7 +74,7 @@ export class PlaybackService {
     try {
       this.logger(...args);
     } catch (err) {
-      console.warn("[PlaybackService] logger threw", err);
+      userLogger.warn("[PlaybackService] logger threw", err);
     }
   }