splatter-tennis/CLAUDE.md

Splatter Tennis — session rules

1. Read PROJECT.md first — it is the only planning document: how Oliver's feedback is handled, every invariant, every settled feel decision, what is open. Do not re-derive or contradict it.
2. node test.js must pass before every commit. It is also a Dockerfile build stage, so a red suite blocks the deploy — but run it locally first. New state-machine behavior gets a test.
3. Mode transitions live in beats.js only (duel/horde/boss/changeover). One mode owns the court; every start* refuses while another mode runs. A new mode starts there and refuses there.
4. Every push deploys (Coolify → splatter-tennis.wuwi.one). Bump main.js?v=N in index.html on every push or phones keep the old build. New top-level files must be added to the Dockerfile COPY.
5. Zero dependencies, no build step, no framework. This is a settled decision — solve it with what is already in the repo.