Quadratic-bezier edges instead of straight lines, and drop the
auto-refit-on-load that caused a jarring zoom/pan snap once the force
simulation settled. Also namespace each graph's dot-grid pattern id
with a per-instance uuid — multiple SessionGraph instances can now be
mounted at once (one per open task window), and duplicate SVG ids
silently blanked out every graph's background but the first.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>