During December 2025, Alessandro Gatta enhanced the lfnovo/open-notebook repository by delivering two front end features focused on usability and cross-device productivity. He implemented fullscreen modes for dialogs and the Markdown editor, using React with JavaScript and TypeScript to manage dynamic sizing and robust state transitions. By integrating MutationObserver, he ensured fullscreen state remained synchronized and reset appropriately on dialog closure. Alessandro also improved the notebook page’s responsiveness, enabling horizontal scrolling on small screens and refining the desktop chat column layout. These changes reduced context switching and improved editing focus, resulting in a more consistent and efficient user experience.