During November 2024, Mrx upgraded the CI/CD environment for the iina/iina repository, focusing on aligning the build and test pipeline with the latest Xcode 16.1 and macOS 15 toolchain. This work involved updating YAML-based GitHub Actions workflows to ensure compatibility and stability across the new macOS runner environment. By proactively preparing the CI configuration for future toolchain updates, Mrx streamlined ongoing maintenance and reduced the risk of integration issues. The project demonstrated practical expertise in CI/CD automation, version control, and Xcode toolchain management, resulting in more reliable builds, faster feedback cycles, and improved readiness for future releases.