Arlow developed a chatroom labeling and pinning feature for the hmif-app-fe repository, enhancing the Curhat module to help users organize and quickly access important conversations. He implemented a frontend label dropdown in React, leveraging state management to ensure seamless user interaction, and integrated backend support using JavaScript and TypeScript. By wiring the RecommendationService and CurhatService.pinChatroom, Arlow enabled scalable workflows for labeling and pinning, laying groundwork for future analytics. This work improved chat discoverability and navigation efficiency, directly addressing user needs. The focused, single-feature approach ensured high code traceability and reproducibility, reflecting depth in both technical execution and business value.