tddlisted

# tdd > Sprint 3 composable skill. Wraps the existing TDD-engineer phase with addyosmani-style structure. Mandatory hop before `build`. ## When to invoke - After `plan-review` returns PROCEED, OR after Scout if plan-review disabled - Before any new feature implementation - Before any bug fix (write a regression test first) ## When NOT to invoke - Eval-only cycles (no implementation needed) - Pure documentation cycles - Refactor cycles where existing tests provide coverage (verify first) ## Workflow | Step | Action | Exit criteria | |---|---|---| | 1 | Read scout-report.md and plan-review.md | Inputs verified | | 2 | Write RED tests (must fail on current code) | Tests exist; running them fails | | 3 | Document the test contract in `<workspace>/tdd-contract.md` | Contract written | | 4 | Append section to `<workspace>/team-context.md` | Bus updated for Builder | ## RED requirement Tests MUST fail when run against the current codebase. A test that passes immediately is NOT a TDD contract — it does not exercise the new behavior. Builder will refuse to start without confirmed RED state. ## Handoffs (beyond the contract artifact) - `<workspace>/tdd-contract.md` with sections: `## Tests Written`, `## RED Verification`, `## Contract for Builder` - New/modified test files in the repo (Builder reads these) - `<workspace>/team-context.md` has populated `## TDD Contract` section <!-- GENERATED:phase-facts BEGIN — do not edit; run `evolve skills generate`. Sources: docs/archit