draw.io Control

draw.io desktop (/Applications/draw.io.app) is an Electron app whose editor is the same JavaScript runtime as diagrams.net (mxGraph + EditorUi). Started with a DevTools port, it can be driven live: a script runs inside the editor window, the user watches the shapes appear, and every change lands on the normal undo stack. When that isn't possible, draw.io files are plain XML and the app's CLI renders them headless. Everything here was run against draw.io 31.5.2; needs Node 22+.