Scaffold project and author 14-phase roadmap

Browser co-op kitchen game: FastAPI + native WebSockets, server-authoritative
20 Hz simulation, in-memory anonymous lobbies, data-driven YAML levels, Canvas 2D
vanilla ES-module client with locally authored SVG art and no external CDNs.

.agents/PLAN.md records the LOCKED decisions; .agents/user_stories/ holds the 12
flow contracts; .agents/phases/todo/ breaks them into 14 sequential, test-gated
phases (71 task files), each leaving the app launchable and the suite green.

LLM-Generated: true

.agents/user_stories/US-08_hazards_under_pressure.md

@@ -0,0 +1,29 @@
+# US-08 — Handle hazards and pressure without losing control
+
+**As a** player in a late level,
+**I want to** deal with fires, spills, moving obstacles, and order surges,
+**so that** the escalation is a fair test of teamwork rather than random unfairness.
+
+## Acceptance criteria
+1. **Fire** starts on a station per level probability, spreads to an adjacent station
+   after its burn timer unless dealt with, blocks its tile, and ruins items on it; it is
+   extinguished by a sink-filled douse (carry water) with visible steam.
+2. **Spill** makes its tile slippery (accel/brake reduced, cook slides ~0.5 tile) and is
+   cleaned by a wipe action; a cook leaving the kitchen with a spill under a station
+   does not propagate it.
+3. **Moving obstacles** (cart, boat mast) follow their authored path and stun on contact
+   for 0.6 s with a visible telegraph 0.5 s before entering a tile.
+4. **Rush waves** spawn a burst of orders with a HUD "RUSH" banner and a wave counter.
+5. Every hazard is data-driven (level YAML): type, location/station reference, rate, and
+   mitigation — no hard-coded hazard placement in Python.
+6. Hazard effects are deterministic under a fixed seed (replay test covers all four).
+7. Client FX exist for each hazard and respect `prefers-reduced-motion` (reduced: static
+   markers instead of flicker/shake).
+8. Hazard penalties never soft-lock a round: the round always ends by timer or target.
+
+## E2E suite
+`tests/e2e/test_us08_hazards.py` — level fixture with fire + spill: extinguish, clean,
+avoid a mover; asserts hazard states in the snapshot and reduced-motion rendering.
+
+## Phases
+`10_hazards_and_escalation_mechanics`, `11_campaign_levels_and_progression`