During March 2026, Tymmy focused on enhancing security and maintainability in the home-assistant/frontend repository by implementing role-based access control for device flows. Tymmy developed a feature that restricts the discovery of device flows to admin users, reducing the risk of unauthorized access and improving the overall security posture of the frontend. The technical approach involved adding a guard clause in TypeScript, ensuring only users with appropriate roles could access sensitive device information. Alongside this, Tymmy addressed code quality by refining non-null assertion handling, demonstrating attention to maintainable front end development practices and a clear focus on traceable, security-driven enhancements.