Gabriel focused on enhancing the basedosdados/queries-basedosdados repository by overhauling its documentation to improve onboarding and contributor experience. He modernized the README to provide a clear overview of data pipelines and incorporated structured contribution guidelines, clarifying environment setup, data upload, and dbt-based model development workflows. Using Markdown and leveraging his skills in documentation and data engineering, Gabriel established a CONTRIBUTING.md that sets clear expectations for both users and collaborators. His work addressed maintainability and collaboration challenges, resulting in a more accessible and organized repository. The depth of the updates reflects a thoughtful approach to open-source project sustainability and usability.