- Add picture-backend and picture-web to CI Docker build matrix
- Add picture services to staging deployment workflow
- Add picture-backend to production deployment workflow
- Create Dockerfile and docker-entrypoint.sh for picture-web
- Fix picture-backend Dockerfile port (3003→3006) and health endpoint
- Add picture routes to Caddyfile.staging
- Add REPLICATE_API_TOKEN and MANA_CORE_SERVICE_KEY env vars