Jacek Bendig contributed to the open-energy-transition/handbook repository by delivering a targeted enhancement to the Docusaurus site search functionality. He upgraded the local search dependency to version 0.52.1, addressing compatibility with recent features and improving search accuracy and site stability. The work involved close collaboration with a co-author to ensure robust integration and effective knowledge transfer. Jacek applied his skills in Node.js, React, and front end development, working primarily with JavaScript and JSON. The scope of the contribution was focused, demonstrating depth in dependency management and feature delivery, though it did not extend to bug fixes or broader architectural changes.