When no artist image is available from any source (library store,
explore cache, MB/Wikidata API), fall back to using the artist's
most popular album's cover art. Uses local library data first.
Applied in three contexts:
1. Search results (explore-view):
- After library image seed: checks library albums by artist name
- After API fetch loop: final fallback for unresolved artists
- Library-only search: checks album art in the seed pass
2. Artist detail page header (explore-artist-details):
- In hydrateFromCache: checks library albums after image sources
- After fetchArtistImage API call: fallback if API returned nothing
The album art is displayed as a circular crop in the artist avatar,
which naturally looks like an artist photo — no visual distinction
needed.
yonlu
9adebad31d