Worked on streamlining CI/CD pipelines and modernizing test infrastructure across the OpenXiangShan/circt and OpenXiangShan/YunSuan repositories. Focused on removing unused GitHub Actions workflows and cleaning up automation logic to reduce maintenance overhead. Upgraded YunSuan’s dependencies to Chisel 7.13.0 and Mill 0.12.17, and introduced a DecoupledDriver utility to standardize test stimulus generation and output verification. Refactored test suites to replace complex fork-join patterns with a clockstep-driven approach, improving test reliability and clarity. Leveraged skills in Scala, Docker, and hardware verification to align tooling with updated standards, resulting in more robust and maintainable development workflows.