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

web/src/routes/library/hidden/+page.svelte

@@ -6,6 +6,7 @@
   import { qk } from '$lib/api/queries';
   import type { LidarrQuarantineMineRow, LidarrQuarantineReason } from '$lib/api/types';
   import ApiErrorBanner from '$lib/components/ApiErrorBanner.svelte';
+  import { coverUrl } from '$lib/media/covers';
 
   const client = useQueryClient();
   const queryStore = createMyQuarantineQuery();
@@ -61,7 +62,7 @@
           <div class="flex h-14 w-14 shrink-0 items-center justify-center rounded-md bg-surface-hover">
             {#if row.album_cover_art_path}
               <img
-                src={`/api/albums/${row.album_id}/cover`}
+                src={coverUrl(row.album_id)}
                 alt=""
                 class="h-full w-full rounded-md object-cover"
                 loading="lazy"