During October 2024, Andrew Halberstadt focused on stabilizing the CI workflow for the mozilla/fx-desktop-qa-automation repository by addressing a critical bug in trust-domain handling. He refined the .taskcluster.yml configuration using YAML and Taskcluster, ensuring Level-3 execution was restricted to the correct repository and specific task types. This targeted fix improved both the reliability and security of the CI/CD pipeline by preventing misrouted or unauthorized tasks. Andrew’s work demonstrated a strong understanding of CI/CD configuration and execution-context validation, delivering a well-scoped solution that enhanced the automation workflow’s integrity without introducing new features, but with careful attention to detail.