Marien Fressinaud developed a user activity tracking feature for the JunkFood02/FreshRSS repository, focusing on backend improvements using PHP and data access object (DAO) patterns. By updating the last activity timestamp upon successful login through the FreshRSS_UserDAO::touch() method, Marien enabled more accurate analytics and session tracking without altering the user-facing login experience. This targeted change addressed the need for reliable last-active data, supporting better retention insights for the application. The work demonstrated a clear understanding of backend integration and login workflows, delivering a focused solution that enhanced data accuracy while maintaining minimal impact on existing authentication processes.