Double-click a port → enter cable-draw mode from that port without
having to arm the cable tool first. armTool("cable") is called so
the crosshair cursor is active during the draw; the next port-click
hits the existing cable-draw-in-progress branch in onPortPointerDown
and commits the cable. Esc / clicking the source port cancels.
Single-click behaviour (select + open port inspector) is unchanged
because pointerdown still hits onPortPointerDown first; dblclick
upgrades the selection to a cable-draw source.
mAi
0ecd9c8b4a