Worked on reliability-focused features across the zen-browser/www and zen-browser/desktop repositories, delivering improvements to script stability and operational efficiency. Enhanced the twilight-to-stable release workflow by implementing robust error handling for file I/O and JSON parsing, validating workflow identifiers, and ensuring correct data types in release notes. Improved the merging process to reduce manual intervention and prevent failures. In the desktop repository, strengthened the update_newtab.py script by adding comprehensive exception handling, directory existence checks, and detailed logging of subprocess output. Utilized Python with a focus on error handling, JSON processing, and scripting to increase debuggability and resilience in release processes.