# Tasks: enterprise-gaming-weather

## 0. Pre-flight (non-negotiable)

- [ ] 0.1 Confirm clean working tree (`git status` reports nothing) and no in-flight worktrees with uncommitted work (`git worktree list` then `git status` in each)
- [ ] 0.2 If any worktrees exist under `.claude/worktrees/`, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (`git worktree remove`) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
- [ ] 0.3 Confirm the package set in `MANIFEST.md` matches `find packages -maxdepth 3 -name package.json` count. Drift here means a prior change archived without regenerating the manifest.

## Phase 1 — Scaffold

- [ ] Create `gaming/world/weather/` (`@suaveplan/weather`, `0.1.0`, `sideEffects: false`)
- [ ] `tsconfig.json`, `vitest.config.ts`

## Phase 2 — Error codes & constants

- [ ] `src/error-codes.ts` + `src/constants/index.ts`
- [ ] `src/presets/index.ts` — CLEAR, RAIN, STORM, SNOW, FOG presets

## Phase 3 — Types

- [ ] `src/types/common.ts` + `common.md`

## Phase 4 — Blend utility

- [ ] `src/utils/blend.ts` — `blendWeather` linear interpolation of all fields
- [ ] Tests + docs

## Phase 5 — Weather zone

- [ ] `src/core/weather-zone/weather-zone.ts` — radius + blend edge, getBlendFactor
- [ ] Tests + docs

## Phase 6 — Weather system

- [ ] `src/core/weather-system/weather-system.ts` — state machine, transitionTo/tick, lightning RNG, events, OTel
- [ ] Tests (transition progress, lightning fires event, zone blend)
- [ ] Docs

## Phase 7 — Integration tests

- [ ] `tests/integration.test.ts` — preset sequence: CLEAR → RAIN → STORM → tick through transitions

## Phase 8 — Pre-publish gate

- [ ] `bunx turbo lint typecheck test --filter=@suaveplan/weather` green
- [ ] 100% coverage
- [ ] Publish: `bun scripts/publish.ts --package @suaveplan/weather`