peter
d79cb528fd
A row's grip carries it, or every selected row with a selected one, onto another list, under a sort or a filter too, and the toast undoes. The rail and the page are separate React trees, so the page reads the rail by what lies under the pointer. An unpinned rail peeks by the drag's own hover and scrolls at its edges. Many rows dropped inside the list stay; a key still moves its own row.