track?.@_currentExplodedTrackIndex is invalid JS syntax — @ is not a
valid identifier character. Replaced with track?.['@_currentExplodedTrackIndex']
so the worker process no longer crashes on startup.
The jobs table row no longer exists for conform jobs (POST /jobs/conform
now goes directly to BullMQ). The UPDATE queries were no-ops (WHERE id = NULL)
so they're safe to remove. BullMQ tracks completed/failed status itself.