Worked on stabilizing the build and packaging workflow for the microsoft/WinUI-Gallery repository, focusing on resolving a critical issue caused by relocating the solution file to the repository root. Addressed a bug in the build configuration by correcting the certificate file path within the XML-based package project, ensuring secure signing and restoring reliable continuous integration builds. Validated the fix across multiple CI configurations to prevent certificate lookup failures and documented the changes to support future maintenance. Demonstrated expertise in build configuration and XML, delivering a targeted solution that reduced build failures and maintained consistent release-quality artifacts without introducing new user-facing features.