Artist-detail discography from MusicBrainz fetched releases via the
artist lookup (`/artist/<mbid>?inc=release-groups`), which MusicBrainz
hard-caps at 25 embedded release-groups and which ignores the `limit`
param entirely. Prolific artists had ~85% of their catalogue silently
dropped — Kendrick Lamar has 167 release-groups on the site but only the
first 25 ever reached SoulSync. Reported by Sokhi: "a lot of albums are
missing when searching vs what's showing on the site."
Switch `get_artist_albums` to walk the paginated browse endpoint
(`/release-group?artist=<mbid>`, offset loop) — the same pattern the
basic-search path already uses — fetching the full catalogue up to the
caller's limit. No type filter and no studio-only filter here: the
artist-detail page wants every primary/secondary type so its tabs mirror
musicbrainz.org. Verified live: now returns all 167 for Kendrick.
Adds 7 tests covering pagination past the cap, offset advance,
short-page stop, limit cap, cross-page dedup, type->bucket mapping, and
a regression pin asserting the capped inc=release-groups lookup is no
longer the discography source.
b14d504cc1