Interactive Drag-and-Drop VSM Canvas Editor

D3.js-based visual canvas with standard VSM iconography (process boxes, inventory triangles, data boxes, kaizen bursts, push/pull arrows). Drag to reorder, click to edit, auto-layout with manual override. Current-state and future-state toggle. Export to PNG/SVG/PDF. This is the biggest competitive gap — Lucidchart, Miro, Creately, and eVSM all have visual editors.