During May 2025, Alexis Delforges focused on enhancing the robustness of the picking interaction pipeline in the iTowns/itowns repository. He addressed a critical bug by implementing validation checks that ensure picking operations only process valid geometry data and loaded points, thereby reducing runtime errors in interactive 3D maps. Using JavaScript and leveraging his expertise in 3D graphics, error handling, and geometry processing, Alexis improved data integrity by skipping over missing geometry or position attributes during picking. This targeted fix increased the stability of the interactive workflow and provided clear traceability for maintainers through a well-documented, auditable code commit.