* fix(library): multi-genre local index with track_genre and backfill
Restore atomic genre browse, filters, and counts via track_genre:
OpenSubsonic genres[] first with Navidrome-default split fallback, sync
write path, read-path query switches, blocking startup backfill with
progress, and v12 repair migration for DBs that recorded legacy 002–011.
TS fallback adds genreTagsFor and migration gate i18n across locales.
* fix(library): address multi-genre review — robust TS genres and scope join
genreTagsFor routes raw genres through parseItemGenres (single-object
Subsonic quirk and bare strings). Library-scoped genre browse/counts join
track for raw_json library_id fallback. Statistics keeps empty-genre bucket.
* docs: CHANGELOG and credits for multi-genre local index (PR #1059)
* docs(changelog): credit HiveMind on Discord for multi-genre report (PR #1059)
cucadmuh