# Tasks: enterprise-gaming-progression

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

## Phase 2 — Error codes & constants

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

## Phase 3 — Types

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

## Phase 4 — XP curve

- [ ] `src/core/xp-curve/xp-curve.ts` — polynomial/exponential/table formulas
- [ ] Tests (levelForXp round-trip, monotone xpForLevel)
- [ ] Docs

## Phase 5 — Progression manager

- [ ] `src/core/progression-manager/progression-manager.ts` — awardXp/getLevel/getXp/getProgress, level-up events, OTel
- [ ] Tests + docs

## Phase 6 — Skill tree

- [ ] `src/core/skill-tree/skill-tree.ts` — canUnlock/unlock/computeEffects, prerequisite DAG check
- [ ] Tests (prerequisite gate, effect aggregation)
- [ ] Docs

## Phase 7 — Achievement tracker

- [ ] `src/core/achievement-tracker/achievement-tracker.ts` — stat tracking, condition evaluation, unlock events
- [ ] Tests + docs

## Phase 8 — Integration tests

- [ ] `tests/integration.test.ts` — XP award → level-up → skill point → unlock → achievement stat update

## Phase 9 — Pre-publish gate

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