Worked on stabilizing and improving automation within the chanzuckerberg/github-actions repository, focusing on the Happy Cleanup GitHub Action. Addressed a critical bug in argument handling by shifting from single-string to array-based invocation, ensuring that conditional flags such as --all and --exclude were parsed correctly during stack deletions. This change reduced the risk of unintended deletions and improved the reliability of automated cleanup processes. Utilized Bash and shell scripting skills to implement and validate the fix across typical scenarios, supporting safer and more dependable CI/CD workflows. The work enhanced automation stability and reduced the need for manual intervention in pipeline maintenance.