During May 2026, Tuan-TC focused on backend development and data analysis for the decolua/9router repository, addressing a critical issue in the Usage Overview Dashboard. He corrected the totalRequests calculation to ensure it accurately reflected the selected time window—such as 24 hours, 7 days, 30 days, or 60 days—instead of displaying a lifetime total. This JavaScript-based fix aligned totalRequests with other usage metrics, improving the reliability of analytics and supporting more informed capacity planning. Although no new features were released, Tuan-TC’s targeted bug fix enhanced dashboard accuracy, demonstrating careful attention to data integrity and metric consistency.