Khalid Boulanouare focused on enhancing test reliability for the openjdk/leyden repository by addressing issues in multi-monitor detection within the MultiScreenTest component. He refined exception handling to ensure accurate feedback when fewer than two monitors are present, which reduced CI flakiness and improved test resilience across diverse environments. Khalid also performed targeted cleanup and structural adjustments in the test code and rendering logic, supporting future maintainability and extensibility. His work leveraged Java, AWT, and testing frameworks to align test expectations with real-world configurations, resulting in more dependable validation of UI behavior. The contributions demonstrated careful attention to test stability.