Worked on security hardening for the Cron Scheduler in the NousResearch/hermes-agent repository, focusing on preventing unauthorized script execution and improving reliability. Implemented robust script path validation to ensure all executed scripts remain within the designated directory, addressing potential path traversal risks. Enhanced environment variable management by introducing a safe try-finally cleanup pattern, reducing the risk of leaks or unintended side effects during task execution. Developed and executed comprehensive tests to validate these security improvements, ensuring traceability and rollback readiness through targeted commit references. Utilized Python, system administration practices, and security-focused testing to deliver these targeted enhancements within the project.