Grip icons on draggable toolbar items, press effect on drag start,
dashed border overlay with 'Drop to add' text when dragging over canvas.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Use screenToFlowPosition() for drop coordinates (fixes zoom/pan bug)
- Remove duplicate selection border from DeviceNode (BaseNode handles it)
- Add w-full to GroupNode for proper container sizing
- Remove unused 'selected' destructuring from DeviceNode
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
DeviceToolbar gets Subnet/VLAN/Site/DMZ grouping section with
drag-drop. PropertiesPanel gets Show Traffic toggle that switches
edges between connection and animated types. DiagramEditor handles
both device and group node drops.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Selection state now stores IDs and derives objects from live arrays,
so edits in PropertiesPanel inputs reflect immediately.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
