- SVG node items with snap-to-grid dragging; ports appear on focus/hover
and highlight compatible targets during a connection drag
- Orthogonally routed edge items with line styles, head/tail decorations
(arrow, circle, diamond, bar), selection halo and title labels; later
edges jump crossings with arcs when enabled
- Grid background view with cursor-anchored zoom, middle-button pan,
rubber-band selection and palette drag-and-drop
- Undoable commands: add/move/delete/connect/property/paste with
clipboard fragments; light/dark/high-contrast themes
- Flow overlay: animated dashes, direction and density follow flow rate
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>