- Switch source/outcome nodes from SVG shapes to foreignObject HTML cards
with white backgrounds, gradient headers, status badges, and progress bars
- Add foreignObject text overlay to funnel nodes (keep SVG tank shape)
- Fix Sankey edge widths: flow-value-relative formula instead of percentage
- Smooth drag: rAF throttle + lightweight edge path patching during drag
- Add dot grid canvas background, arrowhead markers, larger port dots
- Fixed node sizes: source 220x120, outcome 220x180
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
d8f9f46515