root cause: the library stores album/artist art as media-server RELATIVE paths (Plex
/library/metadata/.., Jellyfin /Items/.., Navidrome /rest/..), which don't render in a browser
<img>. normal wishlist items carry Spotify CDN urls so they show fine, but LIBRARY-sourced
items — dead-file re-downloads and preview-clip re-fetches — carry the raw relative path, so
their album art came up blank. and the nebula only had artist photos for WATCHLISTED artists,
so non-watchlist orbs showed initials.
fix on READ in the wishlist tracks endpoint (so it also repairs items already in the wishlist,
no re-run needed), using the library data we already have:
- normalize each track's album.images url that needs it — relative/internal only, via the
canonical normalize_image_url; CDN urls are left untouched so already-rendering items can't
regress.
- build an artist-name -> normalized library-photo map and return it; the nebula seeds its
artist-image map from it (every wishlist artist), with curated watchlist photos overriding.
8 tests (predicate: relative/internal fixed, CDN untouched; album normalize in-place; artist
map build/skip-empty/idempotent/graceful). 237 wishlist+repair+JS tests green, ruff clean.
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