During February 2026, Leo worked on the quokka-astro/quokka repository, focusing on enhancing data integrity within the quokka data pipeline. He addressed a bug in the fextract function by implementing spatial sorting to ensure that output position and data vectors are consistently ordered by coordinate. Using C++ and applying algorithm design and data processing skills, Leo’s targeted patch improved the reproducibility and reliability of downstream analytics. His work aligned with related pull requests to standardize data handling, demonstrated adherence to repository contribution guidelines, and facilitated future enhancements. The contribution reflected a thoughtful, well-scoped approach to maintaining robust data workflows.