Quick Start had drifted: postgres:16-alpine instead of pgvector/pg16,
a single celery-worker + celery-beat layout instead of the actual
worker / scheduler / ml-worker split, and no mention of the ML
tag-suggestion surface. Updates the compose example to mirror the
real docker-compose.yml, adds ml-worker env vars and /models volume
docs, and documents the ML maintenance tools in Settings.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>