# Tasks: enterprise-gaming-building

## 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/building/` (`@suaveplan/building`, `0.1.0`, `sideEffects: false`)
- [ ] `tsconfig.json`, `vitest.config.ts`

## Phase 2 — Error codes & constants

- [ ] `src/error-codes.ts` + `src/constants/index.ts`

## Phase 3 — Types

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

## Phase 4 — Piece registry

- [ ] `src/core/piece-registry/piece-registry.ts` — register/get/listByCategory, Zod validation
- [ ] Tests + docs

## Phase 5 — Placement engine

- [ ] `src/core/placement-engine/placement-engine.ts` — snap socket search, collision validation, place
- [ ] Tests (snap finds nearest socket, invalid placement reasons)
- [ ] Docs

## Phase 6 — Structure graph

- [ ] `src/core/structure-graph/structure-graph.ts` — adjacency graph, DFS flood from foundations, unstable detection
- [ ] Tests + docs

## Phase 7 — Blueprint

- [ ] `src/core/blueprint/blueprint.ts` — capture/apply with relative offsets, serialize/deserialize
- [ ] Tests + docs

## Phase 8 — Integration tests

- [ ] `tests/integration.test.ts` — place foundation + walls → check stable → remove foundation → unstable detection

## Phase 9 — Pre-publish gate

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