feat: Lidarr searches for a better copy of a rip that has none (M498 #5447)

The operator chose option 2: an album holding a video rip that is the only
copy of its song is searched in Lidarr (AlbumSearch), at most once a week
and ten albums a pass. Lidarr grabs only when the quality profile allows an
upgrade, so nothing is removed and the rip stays held back either way.

- lidarr.Client.SearchAlbums posts the AlbumSearch command.
- ListAlbumsWithSoleCopyRips finds the albums: a held-back rip with no
  present clean copy sharing its song or its pending group, and not searched
  in the last week (audit action lidarr_rip_search).
- Suspect sources shows when Lidarr last searched the track's album.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/lib/api/admin.suspect-sources.test.ts

@@ -16,7 +16,8 @@ function track(id: string): AdminSuspectTrack {
     track_number: null,
     markers: [],
     verdict: null,
-    verdict_at: null
+    verdict_at: null,
+    searched_at: null
   };
 }
 

web/src/lib/api/types.ts

@@ -443,6 +443,8 @@ export type AdminSuspectTrack = {
   // back. null: the resolver hasn't looked yet (M498 #5439).
   verdict: SuspectVerdict | null;
   verdict_at: string | null;
+  // When Lidarr was last asked to search the album for a better copy (#5447).
+  searched_at: string | null;
 };
 
 export type SuspectVerdict = 'suspect' | 'fine';