During March 2026, Bddjr08 enhanced cross-platform compatibility and data accuracy across two major repositories. In rolldown/rolldown, Bddjr08 updated the module resolution logic to properly handle Windows file paths, ensuring smoother integration for Windows environments and improving overall build reliability. For mdn/browser-compat-data, Bddjr08 contributed Brotli compression support information for Opera on Android, updating Content-Encoding data to reflect current browser capabilities. These contributions relied on JavaScript and JSON, with a focus on browser compatibility and adherence to web standards. The work demonstrated careful attention to platform-specific issues and thorough documentation, resulting in robust, maintainable improvements without introducing new bugs.