Lisanna Dettwyler focused on stabilizing the Windows build environment for the oneapi-src/level-zero-tests repository, addressing a persistent CI reliability issue. She removed a problematic symbolic link from the Windows Dockerfile and updated the ENTRYPOINT to target a specific Visual Studio version, ensuring consistent build paths. By adding a pre-build guard to verify the presence of vcvars64.bat, Lisanna prevented runtime failures on Windows runners, directly improving build reproducibility. Her work leveraged skills in CI/CD, Docker, and Windows environment setup, using Batch scripting and Dockerfile modifications to reduce flaky failures and streamline the feedback loop for developers and quality assurance teams.