Developed comprehensive project documentation and a hackathon plan for the Neutral Density Project within the Diff4Earth/ige-jaxathon-2025 repository. The work focused on establishing a single source of truth by outlining project goals, background research, and a repository map, all authored in Markdown. Leveraging skills in project documentation and scientific research planning, the developer defined clear deliverables, milestones, and success metrics to guide measurable outcomes. This documentation artifact was designed to streamline onboarding, facilitate knowledge transfer, and align cross-team collaboration, providing a reusable framework that supports both current and future contributors in understanding project scope and evaluation criteria efficiently.