Layerline / play mode
This prototype uses the full screen to keep layered shutters and route previews readable.
Route mint power from the source into every amber terminal at the same time.
Hold an exposed shutter. Blue shows the exact next route and layer position. Release on that shutter to commit; drag away to cancel.
A top shutter can cover a lower hinge. Every move is reversible: use Undo, Restart, or Hint. Now flip one real shutter.
Shutter calibrated. Keep every terminal powered together.
Board 1 / 50
Press a hinge to preview. Release to flip.
Practice: hold an exposed shutter, then release it to flip.