## 1. Specification
- [ ] 1.1 Draft and validate spec deltas.

## 2. Implementation
- [ ] 2.1 Implement core behavior.
- [ ] 2.2 Add or update tests.

## 3. Verification
- [ ] 3.1 `npm run build`
- [ ] 3.2 `npm run test`
- [ ] 3.3 `openspec validate <change-id> --strict`
