File Card Menu

The component is self-contained: one file, no dependencies, its own palette in the local --vibeui-contextmenu-009-* variables. Client component: "use client" for the sake of the cursor coordinates and its own open state. The menu is not an HTML popover but a plain absolutely positioned layer inside the demo area, which has position:relative and overflow:hidden: the click coordinates are converted into that area's frame of reference and clamped by its bounds using the known menu size, so it physically cannot leave the catalogue card. The component drives opening and closing itself through useEffect: an outside click and Escape close the menu, and focus returns to the button or the card that opened it. The theme comes from the surrounding color-scheme through light-dark(), and the card has no background of its own by default.