During July 2025, Hama contributed to the sparcs-kaist/clubs repository by expanding the summer semester credits roster. Hama implemented a focused data-structure update in TypeScript, adding a new member entry with complete metadata, including nickname, name, PM role, role type, and a motivational comment. The change was isolated and non-breaking, ensuring seamless integration with the existing roster management workflow and preserving data integrity. By linking the update to a specific commit for traceability, Hama demonstrated attention to repository hygiene and commit-based documentation. This work improved the accuracy of cohort credits, supporting precise reporting and fair performance reviews for the team.