During May 2025, CodingCapybara focused on enhancing build stability and cross-platform test compatibility for the swiftlang/swift-corelibs-libdispatch repository. They addressed a specific issue affecting FreeBSD test builds by conditionally including sys/sysctl.h in the dispatch_test.h header, enabling sysctlbyname support and resolving a persistent build failure. This targeted bug fix improved continuous integration reliability and ensured consistent behavior across operating systems. Working primarily in C and leveraging expertise in build systems and testing, CodingCapybara demonstrated a methodical approach to cross-OS compatibility. The work was focused in scope, addressing a single, well-defined problem with a precise and maintainable technical solution.