Registry-pull pattern matching Worldtree: CI on vh/skaldsong builds and
pushes gitea.phasefinal.com/vh/skaldsong:<sha>, this playbook pulls +
recreates. SHA-pin only per current preference; no :latest moving-tag
advance yet (revisit once /health exercises Worldtree + Kokoro reach).
Host port 8300 (host) → 8000 (container). Persistent state under
/opt/docker/conf/skaldsong/{db,runs}.
Bifrost endpoint URL 10.250.50.70:8300 will need a paired
BIFROST_CLIENT_ALLOWED_HOSTS update on corviduo-dev Worldtree at first
deploy.
