The tour is the editor: create a short-lived practice graph, then every control, slide, test, and Three.js workplane operates on that same validated DAG.
Each node gets a deterministic rank and lane. Add a candidate, then an evaluation gate; the shared canvas reflows the horizontal columns after every accepted command.
Choose a source, target, semantic link type, and nominal runs per second. Saving an existing link changes its type or flow rate; a backward link is rejected before it can create a cycle.
Pick a card here or directly on the Three.js canvas. The selected workplane and every transitive upstream dependency become one bright path; the same path is announced as text.
Select a node to trace its inputs.
Trace a three-node pathNest workplanes inside a container, fly through it, use the same selection and link tools in that layer, then close it or remove a selected node. The 2D controls and 3D layer are two views of one session.