OSS-first docs
These docs teach the open system first: contracts, generated surfaces, runtimes, governance, and incremental adoption. Studio shows up as the operating layer on top, not as the source of truth.
Terminally rejects a review record. Terminal at the record level — re-opening requires a fresh review.
Per SEAMS §1.3 (S-11), emits exactly one `audit.event.append` with kind `review.rejected` and retention class `regulatory`. Returns `auditEventId` so the UI can deep-link to the record.
Capability: `review.act`. Per SEAMS §1.5, missing capability returns `FORBIDDEN` — auditor persona sees the button disabled.
Idempotency: `idempotencyKey` is required.