The server returns relative cover_url (/api/albums/{id}/cover, /api/playlists/{id}/cover). Android only resolved the empty-fallback placeholder trick, so any non-empty relative URL from a fresh fetch went to Coil host-less and silently failed (album detail, artist-detail album grid, playlist cards, artist avatars). Add a shared ServerImage composable + resolveServerImageUrl that prefixes the placeholder host (rewritten by BaseUrlInterceptor) for relative paths, passes http(s) through, and falls back when blank. Route AlbumCard, PlaylistCard, AlbumDetail header, and ArtistAvatar through it. Mirrors Flutter's ServerImage._resolve.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
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