Worked on the wabbajack-tools/mod-lists repository to expand access to external mod sources by updating the repositories.json configuration. Focused on configuration management, the developer added a new external repository and adjusted existing entries, broadening the mod catalog available to users. All changes were managed through Git-based version control, with clear, traceable commits and local validation to ensure compatibility with the existing mod-loading workflow. No bugs were reported or fixed during this period, indicating stable integration. The work demonstrated proficiency in JSON data modeling and disciplined change management, supporting ongoing data integrity and accessibility within the mod-listing infrastructure.