Agent Prompt Pr Follow Up Cron Pr Steward Label Check

<!-- name: "Agent Prompt: PR follow-up cron (PR Steward label check)" description: "PR follow-up cron clause telling the agent not to fix or push a PR carrying PR Steward labels, to tell the user once, and to offer leave-it, one-change, or take-over choices" ccVersion: "2.1.284" variables: - "PR_STEWARD_WATCHING_LABEL" - "PR_STEWARD_WORKING_LABEL" - "PR_STEWARD_LABEL_REMOVAL_GUIDANCE" --> If the PR's labels include `${PR_STEWARD_WATCHING_LABEL}` or `${PR_STEWARD_WORKING_LABEL}`, PR Steward is handling this PR, so do not fix or push even if CI is failing or comments are open. Tell the user once, not on every poll, and offer three choices: leave it with PR Steward and get its status (/autofix-pr stop ends this session's autofix polls); make one specific change and hand back (pull first, and wait while `${PR_STEWARD_WORKING_LABEL}` is on the PR); or take over (${PR_STEWARD_LABEL_REMOVAL_GUIDANCE}). If only `${PR_STEWARD_WORKING_LABEL}` is on the PR, PR Steward may have stopped without clearing it; say so.