SoulID worker generates deterministic soul IDs for all library entities:
- Artists: hash(name + debut_year) — searches iTunes + Deezer APIs,
verifies correct artist by matching discography against local DB
albums via MusicMatchingEngine, pools years from both sources and
picks the earliest. Falls back to hash(name) if no match found.
- Albums: hash(artist + album)
- Tracks: song ID hash(artist + track) + album ID hash(artist + album + track)
Dashboard button with trans2.png logo, rainbow spinner, hover tooltip.
Worker orb with rainbow effect. SoulSync badge on library artist cards.
DB migration adds soul_id columns with indexes to artists/albums/tracks.
Migration version flag auto-resets artist soul IDs when algorithm changes.