Document MenuBar and ContextMenu item state from #44 New MenuBar page (items, checked items, keyboard and mouse, events and methods), linked from the sidebar and Home. ContextMenu documents checkable and group items and the persistent set_disabled / set_hidden / set_checked. The Widget Catalog lists MenuBar (20 widgets); the Roadmap marks it shipped, leaving the two-thumb slider in Priority 2b; the dhxpyt comparison's menu row and gap list follow. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>