b2439e4bac
Drop the faint base-graph (G') edges and the dotted restored base edge from the medial panels, leaving just the medial graph (medial vertices at edge midpoints, medial edges, colours, halos, and the restored-diagonal medial square). Panels A and B still show the triangulation. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>