Worked on the validmind-library repository to enhance security hygiene by updating configuration management practices. Focused on preventing accidental commits of sensitive environment variables and direnv files, the developer modified the .gitignore file to exclude .envrc and .direnv/ in alignment with best practices for secret management. This change, implemented using Git and configuration management skills, aimed to reduce operational risk and improve repository hygiene without introducing customer-facing features. The work addressed a specific bug related to secret exposure, ensuring that sensitive files are not tracked in version control. The approach demonstrated careful attention to security and repository maintenance using Git configuration.