Worked on the denoland/chromium_build repository to deliver a Chrome OS Build Version String Enhancement, focusing on improving build traceability and UI clarity. Used Python to update lastchange.py, enabling it to fetch and embed the mainline commit position into generated header files. This integration allowed Chrome OS UIs to display precise build origin and update status, supporting better release validation and debugging. Leveraged skills in build systems and version control to maintain compatibility with existing header-generation workflows. The work enhanced build provenance across Chrome OS builds, providing users and developers with clearer insight into build updates and streamlining the validation process.