Bootstrap apps/collab as a Hocuspocus WebSocket server (ADR 0003):
- pino JSON logging (service=collab) and shared Zod env validation
(collabEnvSchema); structured connection open/close logs.
- /healthz endpoint (process liveness + PostgreSQL ping) served via the
onRequest hook, matching the container-internal path and the proxied
/collab/healthz path; any WebSocket handshake is accepted for now
(authentication arrives with #34, persistence with #35).
- Dockerfile (ESM workspace build) and a compose service on the frontend
and internal networks with a healthcheck; dev overlay service and a new
COLLAB_PORT variable.
- CD builds, pushes, and promotes the collab image; CI builds it on PRs;
the smoke suite asserts /collab/healthz through the reverse proxy.
- deployment.md/stages.md: proxy routing, per-stage COLLAB_PORT, checklist.
Closes#33
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
