release

Cut a new ArcKit release — bump versions in lockstep, regenerate non-Claude formats, validate plugin/marketplace agreement, tag, and push to standalone repos. Use when the user says 'cut a release', 'release ArcKit', 'ship vX.Y.Z', 'bump the version and release', 'do the release flow', 'tag and publish', or 'push the extensions'. This is a manual, high-consequence workflow: it never runs automatically.