Sarah Bellaha focused on improving the user experience of the OpenRailAssociation/osrd-ui project by addressing a nuanced bug in the Manchette Space-Time Panning feature. She isolated and resolved an edge-case in vertical panning, ensuring that navigation remained within the container’s scrollable area and preventing overscroll. Using TypeScript and React Hooks, Sarah delivered a well-scoped fix that enhanced the reliability of space-time navigation, reducing potential confusion for users. Her disciplined approach to version control, demonstrated through a concise and traceable commit, reflected careful engineering. The work, while limited in scope, showed attention to detail and a clear understanding of front-end development.