During February 2026, dlwngjs429 focused on enhancing the developer experience for the skkuding/codedang repository by improving documentation across core backend services. Working primarily with TypeScript and leveraging API development and backend skills, they introduced comprehensive JSDoc comments to services such as ProblemService, UserService, and GroupMemberService. This effort aimed to increase code clarity, maintainability, and ease of onboarding for new contributors. By standardizing inline documentation and ensuring consistency across services, dlwngjs429 addressed internal priorities and facilitated cross-service collaboration. The work demonstrated a methodical approach to code quality, emphasizing long-term maintainability over immediate feature delivery or bug fixes.