Will Wang upgraded the continuous integration workflow for the openai/codex repository by enhancing the Rust CI runner infrastructure. He migrated runner instances to larger, more capable configurations and updated macOS and Ubuntu runner settings to match the new hardware profiles. Using YAML and leveraging GitHub Actions, Will defined custom runner groups and labels for Linux and Windows, optimizing build and test parallelism. This work focused on accelerating CI performance and improving system administration efficiency. The changes, tracked under a single feature commit, addressed the need for faster and more reliable builds, demonstrating depth in CI/CD pipeline optimization and infrastructure management.