Seonhwi worked on the iOfficeAI/AionUi repository, focusing on the Gemini Authentication System during a one-month period. He addressed the model naming alignment required for the 3.0 upgrade, ensuring that all authentication components referenced models consistently as the system transitioned from version 2.5 to 3.0. Using React and TypeScript, Seonhwi implemented and validated a targeted bug fix that standardized model names, reducing the risk of misconfiguration after deployment. His approach involved careful version control and cross-module analysis, which improved upgrade readiness and minimized potential support issues. The work demonstrated depth in front end development and authentication system maintenance.