Garr O'Donnell worked on the DiamondLightSource/workflows repository, focusing on simplifying OpenAPI type generation within the graph-proxy. He removed unnecessary Serde (De)serialize tokens from generated OpenAPI types, which eliminated the quote dependency and allowed direct formatting of the type space. This targeted refactor streamlined the OpenAPI generation pipeline, resulting in shorter build times and a reduced dependency surface. Using Rust and build system expertise, Garr improved the maintainability and reliability of the codebase. The work addressed build process efficiency and dependency management, demonstrating a thoughtful approach to code generation and architectural cleanup over the course of the month.