During December 2024, Daniel Brown enhanced the zio/zio repository by updating its testing documentation to clarify the use of sbt testOnly and the handling of slow-tagged tests. He focused on improving onboarding and developer efficiency by providing clear Markdown examples that demonstrate how to run targeted and slow-tag tests across the project. Daniel’s work centered on documentation, leveraging his expertise in Markdown to reduce confusion for contributors and align local development practices with CI expectations. While the contribution did not involve code or feature changes, it addressed a key workflow pain point and improved the overall developer experience for zio/zio.