Worked on the hoodong/2025-2-PLC repository over a two-month period, focusing on documentation quality and repository maintainability. Enhanced onboarding and team knowledge sharing by updating the 5조.md file with detailed team member profiles and improved Markdown formatting, ensuring clearer context for new contributors. Prioritized repository hygiene by removing an obsolete file, streamlining the project structure without altering production code. The work centered on documentation skills and Markdown, emphasizing clarity and traceability in all changes. No bugs were reported or fixed, reflecting a maintenance-oriented approach that prioritized user-facing documentation improvements and efficient project organization over direct codebase development.