kiwi-tdd

Orchestrates the step-scoped TDD First cycle of the tdd work-mode (acceptance lines → red tests → green implementation → regression → post-hoc SRS promotion). Verifies Mode: tdd (halt otherwise) → claims the step via claim_step → records EARS acceptance lines in intent.md `## Acceptance` and checks them with step validate (under --sds, authors design.md per SDS-MD Rules) → translates the acceptance lines into failing tests (red) → green without weakening tests → regression → synthesize + promote_step_requirement (verification evidence required). Triggers — kiwi tdd, tdd mode, TDD First, tdd step, /kiwi-tdd. Options — --sds (step SDS design.md — only when the user asks).