Worked on enhancing contributor transparency and governance documentation for the hoodong/2025-2-PLC repository. Focused on updating the 4조.md file by adding a new contributor entry, including academic details, to support clear project collaboration and onboarding. Employed Markdown for structured documentation and utilized Git for precise version control, ensuring an auditable change history. The update maintained documentation integrity without introducing breaking changes or bugs. This work demonstrated skills in documentation management, contributor tracking, and open-source governance practices, contributing to a more organized and accessible project environment. No code features or bug fixes were required during this documentation-focused period.