Maity: Board

Review PR #143 (runner revoke policy)

tsk-bkas46g2978k cancelled chore

Independent review of https://github.com/oliver-zehentleitner/maity/pull/143: on_runner_revoke keep/stop/inherit. Check: does stop really stop agents without the runner (credential revocation reach), race with a re-pair, multi-project runners with different settings, audit/events, whether keep leaves a hole. Deliver review_result to oz-agent-a.