Alecandra Iurco enhanced the KatharineZhang/ButterWalk repository by focusing on CI/CD reliability and codebase maintainability. She integrated CodeQL security scanning into the continuous integration pipeline using YAML, replacing a custom workflow with GitHub’s platform-default solution to improve security visibility and reduce maintenance overhead. Additionally, she performed targeted code cleanup in TypeScript by removing the unused client/types directory, simplifying type management and streamlining future development. While no major bugs were addressed during this period, her work delivered business value by making release cycles safer and more efficient. The technical approach demonstrated a strong grasp of CI/CD and security automation.