non blocking status loading

frontend/js/main.js

@@ -34,6 +34,12 @@ window.App = window.App || {};
 
         await App.videos.loadVideos();
         App.favorites.syncButtons();
+
+        // The UI above is rendered entirely from the last known status cached in
+        // localStorage, so startup never blocks on (or breaks because of) a slow
+        // or failing status endpoint. Now fetch fresh status in the background and
+        // reconcile the UI with whatever comes back.
+        App.storage.refreshServerStatusInBackground();
     }
 
     initApp();