Andreas H. focused on stabilizing the Zig/Bazel build pipeline for the grpc/bazel-central-registry repository, addressing persistent CI flakiness and improving build reproducibility. He resolved a critical flaky test dependency by updating rules_cc and rules_zig, and modernized the CI environment by migrating to Ubuntu 24.04. Leveraging his expertise in Bazel, build systems, and dependency management, Andreas used Starlark to implement targeted dependency bumps and configuration changes. His work resulted in smoother CI runs, faster pull request validation, and more reliable integration with the central registry. The depth of his contributions improved both the reliability and maintainability of the build process.