Romain Caneill developed comprehensive project documentation and a hackathon plan for the Diff4Earth/ige-jaxathon-2025 repository, focusing on the Neutral Density Project. Using Markdown and leveraging skills in project documentation and scientific research planning, Romain defined project goals, synthesized background research, and mapped code repositories to streamline collaboration. The documentation established clear deliverables, milestones, and success metrics, providing a structured framework for measurable outcomes. By creating a single source of truth, Romain’s work improved onboarding, knowledge transfer, and alignment across teams. The depth of the artifact supports faster onboarding and cross-team collaboration, reflecting a thorough and methodical approach to project planning.