During December 2025, this developer enhanced the apache/jena repository by implementing a CodeMirror-based editor within the Fuseki UI, replacing the legacy textarea to improve dataset editing with syntax highlighting and line numbering. They developed a reusable CodeMirror component in Vue.js, abstracting editor behavior for maintainability and consistent integration across the interface. The work involved updating the jena-fuseki-ui package to support native legacy mode languages and performing repository housekeeping, including license header updates, .gitignore adjustments, and yarn.lock refreshes. Their contributions focused on front end development using JavaScript and Vue, prioritizing user experience improvements and reproducible build processes.