refactor(web): migrate 4 open-coded cover URL sites to coverUrl() helper (C1 small-win)

web/src/lib/components/PlayerBar.svelte

@@ -12,7 +12,7 @@
     toggleQueueDrawer
   } from '$lib/player/store.svelte';
   import { formatDuration } from '$lib/media/duration';
-  import { FALLBACK_COVER } from '$lib/media/covers';
+  import { FALLBACK_COVER, coverUrl } from '$lib/media/covers';
   import LikeButton from './LikeButton.svelte';
   import TrackMenu from './TrackMenu.svelte';
 
@@ -57,7 +57,7 @@
         class="shrink-0 focus-visible:outline focus-visible:outline-2 focus-visible:outline-accent"
       >
         <img
-          src={`/api/albums/${current.album_id}/cover`}
+          src={coverUrl(current.album_id)}
           alt=""
           class="h-24 w-24 rounded-md object-cover"
           onerror={onCoverError}