During December 2024, Martijn de Vos focused on maintaining and preparing the TUDelft-MUDE/book repository for future development rather than delivering new features or bug fixes. He concentrated on repository health by ensuring continuous integration pipelines remained stable and documentation was current, using tools such as Git, Markdown, and shell scripting. This groundwork aimed to streamline future sprints by reducing technical debt and clarifying project structure. While no direct product changes were shipped, Martijn’s work provided a stable foundation for upcoming milestones, emphasizing process reliability and maintainability. The depth of work lay in proactive infrastructure upkeep rather than feature delivery.