Nodes can now be built from the keyboard

Building a map no longer needs the mouse. Arrow keys move the selection around the tree, Cmd plus an arrow key adds a child or a sibling in that direction, and Enter opens the selected node so you can type straight into the card.

Deleting a node takes its whole branch with it and closes the gap in the ordering, so the tree never ends up with holes in it.

There is one guard. Once a node’s prompt has been submitted it stops being editable, because the answer below it was written against that exact wording.

Open a map and press Cmd plus the right arrow to add your first child.