Yan focused on improving the security and stability of the brave/leo repository by addressing a critical dependency vulnerability in March 2025. He identified and patched a security advisory related to Vite, applying targeted dependency management and configuration updates using JavaScript. Yan validated the patch through a clean build process and ensured alignment with Dependabot remediation practices, minimizing risk and maintaining compliance. His work demonstrated proficiency in security patching and dependency management, with clear documentation supporting ongoing project stability. Although the period did not involve feature development, Yan’s contribution provided depth in maintaining secure, reliable code through careful, low-risk engineering interventions.