App overlays: drawer, context menu, toasts

SvDrawer (edge side-sheet), SvContextMenu (right-click menu) and the toast() API + SvToaster - all built on the shared focus-trap, scroll-lock and dismissable-layer primitives, so nested overlays close top-first and every toast is announced to screen readers.

A live, editable Svelte 5 data grid example. Open the interactive demo or read the documentation.