Worked on the github-maccloud/runner-images repository to modernize and stabilize macOS CI environments by updating build toolchains and improving SBOM generation reliability. Over three months, introduced Xcode 16.3 beta 3 and later Xcode 26 beta 6 into macOS runner images, enabling earlier validation against new platform features and supporting beta-cycle readiness. Addressed SBOM workflow failures by pinning Syft to version 1.24.0 on macOS, ensuring consistent and auditable dependency tracking while maintaining compatibility across operating systems. Leveraged Shell and YAML for build system automation, with a focus on CI/CD, DevOps, and traceable, auditable changes to support robust continuous integration pipelines.