Worked on the CMSgov/dpc-app repository to enhance development hygiene by updating the .gitignore configuration. The approach excluded all contents within the tmp/ directory from version control, while retaining a .keep file to support local development workflows. This change reduced the risk of accidentally committing temporary files that might contain sensitive data, aligning with security and compliance best practices. The update was implemented using Git and configuration management skills, focusing on minimizing developer friction while improving the project’s security posture. No bugs were addressed during this period, and the work centered on refining repository management processes rather than introducing new application features.