Mark Krumholz enhanced the governance and code review process for the hydro module in the quokka-astro/quokka repository. He established a dedicated codeowner to oversee hydro-related contributions, introducing a standardized pull request checklist to ensure consistent review quality. By integrating mandatory testing coverage for new physics features, Mark improved the reliability of future hydro module updates. He also prepared the continuous integration pipeline to support GPU-based testing, enabling automated validation through the standard workflow. Throughout the project, Mark utilized Git for version control, collaborated closely with team members, and leveraged Markdown to document processes, laying groundwork for more efficient development cycles.