During December 2025, Daglar Sinan enhanced audit log querying in the checkmarble/marble-frontend repository by making date filters optional, allowing users to perform more flexible and targeted searches. He addressed a date handling bug to ensure reliable audit analytics and smoother troubleshooting. Daglar’s work focused on improving usability for audit log analysis, enabling both ad-hoc and precise queries. He utilized TypeScript and YAML for backend API development, integrating the changes seamlessly into the existing frontend. The depth of his contribution lay in refining user-centric features that streamline audit workflows, demonstrating a solid grasp of backend systems and practical problem-solving in production code.