Richard focused on improving the robustness of the systematics calculation workflow in the mg5amcnlo/mg5amcnlo repository, addressing stability issues in multi-core environments. He identified and fixed an index out-of-range bug that previously caused failures during parallel processing, enhancing the reliability of downstream simulations. Using Python, Richard refactored error handling to ensure that temporary files are properly cleaned up, preventing disk usage growth and resource leaks. His work enabled the workflow to recover gracefully from errors or provide clear reporting for troubleshooting. This targeted bug fix and workflow hardening demonstrated depth in bug fixing, error handling, and systematic calculation skills.