During May 2025, Hay delivered foundational documentation work for the se-sac/sesac-01 repository by scaffolding Homework README files for class01 and class02. Using Markdown and focusing on documentation best practices, Hay standardized the structure of homework instructions and improved author attribution to accurately reflect LeeJiHye, enhancing contributor tracking and repository hygiene. The approach emphasized maintainability and onboarding clarity, with commit-level traceability ensuring transparency of changes. While the work was limited in scope to documentation and did not involve bug fixes or feature development beyond scaffolding, it established a clear baseline for future content updates and improved the repository’s organizational structure.