May 2025 monthly summary: Delivered a feature enhancement to the systemd extension mechanism, expanding compatibility across related Linux distributions by enabling extension matching against both the OS ID and the host's ID_LIKE field. Implemented and added tests to verify the extended matching logic, improving reliability and reducing regression risk. Commit 0af993769150de78c4c1c84190318e2766262966. No critical bugs fixed this month; focus remained on feature delivery, test coverage, and maintainability. Business impact includes smoother downstream packaging and reduced extension-mismatch issues across distributions. Technologies demonstrated include core systemd internals, testing and validation of extension logic, and maintainable commit hygiene.