Andrej Roeder enhanced the fair-acc/gnuradio4 repository by implementing a robust code quality assurance workflow focused on pre-commit automation. He introduced and configured a suite of pre-commit hooks, including cmake-format, cmake-lint, prettier for YAML and Markdown, shellcheck, and black, to enforce consistent formatting and linting standards. Working primarily with YAML and leveraging his expertise in pre-commit configuration, Andrej aligned the repository’s tooling with restyler standards, reducing style-related issues and streamlining contributor onboarding. This work improved the developer experience and ensured that quality gates were applied at commit time, supporting more reliable and maintainable code delivery.