Worked on application and package management for macOS, focusing on stability and user experience across the lizongying/homebrew-cask, iina/iina, and XcodesOrg/homebrew-cask repositories. Delivered features such as stable download URLs and improved window management, ensuring reliable installations and intuitive file handling. Addressed packaging and livecheck issues by updating zap trash paths and correcting version-check URLs, which reduced user confusion and improved repository health. Employed Ruby and Swift to implement these solutions, leveraging skills in DevOps, Homebrew cask management, and macOS development. Maintained clear documentation and commit traceability, supporting ongoing maintainability and alignment with Homebrew’s evolving workflows.