The firing cron expression — carried into the maintenance-error log line for correlation.
Raw APPROVAL_RETENTION_DAYS env value; parsed via numberVar(…, 30, 'APPROVAL_RETENTION_DAYS', { allowZero: true }) and converted to ms — 0 purges decided approvals immediately, the same convention RUN_RETENTION_DAYS uses.
factory.system() — the cron-only cross-tenant view.
Options for the cron-owned approval-retention purge.