- All nodes now use single FunnelNode type
- Dual-handle range slider for min/max on one line
- Min cannot exceed max (constrained)
- Pie chart showing outflow allocations
- Edge thickness proportional to allocation percentage
- Removed old SourceNode, RecipientNode, ThresholdNode
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>