During August 2025, contributed to the block/goose repository by delivering a redesigned main panel featuring a resizable sidecar and enhanced user experience. Leveraging React and TypeScript, implemented auto-opening of the sidecar when a tool returns a UI resource, refined the close behavior, and introduced smooth resize animations using setSize for consistent visual transitions. The new main panel layout improved layout dynamics and state management, while fixes to auto-open and close interactions increased UI reliability. These updates streamlined access to tools, reduced user friction, and established a scalable foundation for ongoing UI maintenance and future enhancements in front end development.