docs: Refactor and update widget documentation and implementation - Removed the planned `TitleBar` documentation as it has not been implemented. - Updated `VirtualList` documentation to clarify usage and controller methods. - Revised `Widgets` documentation to reflect the current state of shipped widgets. - Added `FormField` component documentation, detailing its usage and props. - Improved sidebar organization for better navigation and clarity.

MeowLynxSea committed Jun 18, 2026