Playout: slate fallback, strict ffprobe validation, Prometheus metrics Chat: history on join, DM offline delivery, env-config rate limits, Redis auto-reconnect, heartbeat, ban/mute enforcement, DM metrics Viewer: presence indicators, schedule overlay, public /api/schedule Admin: playlist drag-reorder, schedule overrides CRUD, user actions, inline mod buttons, CSV export, config editor, restart buttons, upload normalization gate, analytics time range nginx: CORS preflight, JSON health, stub_status Docs: test-lab vs production distinction across all configs/docs Infra: Redis maxmemory, CD health IP-agnostic, slate volume mount