Discogs masters (/masters/{id}) and releases (/releases/{id}) share one
numeric ID namespace, so release N and master N are different albums.
search_albums() (type=release) yields RELEASE ids, but get_album,
get_album_tracks and _fetch_and_cache_album all tried /masters first and
only fell back to /releases. Whenever a release id collided with a real
master id, the master lookup succeeded and returned a valid-but-wrong
album — the fallback never fired.
Tag the object type into the id string ('r12345' / 'm12345') at the single
parse point (Album.from_discogs_release) and route each fetch to the
matching endpoint. Legacy untagged ids are tried release-first (then master),
which self-heals pre-existing bad matches without a migration. The
enrichment worker now persists the tagged id too.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
