v8.0.0 — fold validate into instance promote The validate component (mock exists-check + retag) is removed; instance promote moves :latest and :stable together in one idempotent step. Instances deliberately don't boot-smoke — basef's earned :stable is the quality bar. Also: kickstart/summary clone literals bumped + release-check guard; earned-stable.svg timing rot removed; README accuracy pass. BREAKING: removes the validate component.