During February 2026, CoderOJ focused on enhancing the reliability of the academic calendar feature in the thu-info-community/thu-info-app repository. They addressed a bug affecting the alignment of the first week of the spring 2025–2026 schedule, ensuring that the calendar correctly starts on Monday. Using TypeScript and front end development skills, CoderOJ improved the calendar data parsing logic and expanded automated test coverage to validate weekday alignment and week-count calculations. This work reduced the risk of display errors for end users and established a foundation for future calendar features, demonstrating careful attention to accuracy and long-term maintainability through robust testing.