Worked on the usememos/memos repository to enhance authentication resilience by improving access token management within the web application. Focused on refining the logic for stored token checks and the refresh flow, the developer addressed scenarios involving token expiration to stabilize user sessions and reduce authentication-related disruptions. Using React and TypeScript, the implementation introduced a targeted fix for token refresh, which improved session continuity and reduced friction for end users. This work established a more robust foundation for secure, seamless user experiences and positioned the authentication codebase for easier future maintenance and further security enhancements in front end development.