Claude focused on stabilizing and standardizing MPI support within the PolyhedraZK Expander repository, delivering a unified OpenMPI dependency framework for both Linux and macOS CI/CD pipelines. By consolidating MPI build and test configurations, Claude reduced environment drift and improved reproducibility across platforms. The work involved implementing centralized dependency management using Python, Shell, and YAML, and integrating these changes into GitHub Actions workflows. This approach ensured consistent builds and reliable testing for MPI-enabled features, simplifying onboarding and maintenance. Claude’s engineering addressed missing dependencies and streamlined the CI process, reflecting a methodical approach to build systems and cross-platform automation.