Update epic checklist, mark completed tasks, fix Gitea username/domain
references, and update DEPLOYMENT.md with correct registry paths.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Uses pre-built images from the Gitea container registry, runs Alembic
migrations before API startup, and keeps the database password configurable
via environment variable. No source mounts or debug mode.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>