During September 2025, this developer focused on enhancing project documentation for the hoodong/2025-2-PLC repository. They delivered a targeted update by adding an introduction for a new student member to the 11조.md file, aiming to improve onboarding and clarify team composition. The work emphasized maintainability and traceability, with clear commit messages supporting future audits and collaborative review. Utilizing Markdown for documentation and applying strong communication skills, the developer ensured that project records accurately reflected current responsibilities. No bug fixes were required during this period, as the primary contribution centered on documentation quality and supporting effective team collaboration practices.