Worked on stabilizing the Cron Scheduler in the openclaw/openclaw repository by addressing an infinite loop issue caused by stuck past-due cron jobs. Introduced a minimum delay when re-arming timers to prevent event-loop saturation and reduce log flooding, directly improving the reliability of scheduled tasks under heavy load. Enhanced the system’s resilience by adding regression tests to verify the fix and guard against future recurrences. Utilized Node.js and TypeScript to implement and validate these changes, focusing on debugging and testing practices. This work contributed to more predictable maintenance windows and robust operation of the cron subsystem in production environments.