4f629ee2ab
Drops docs/whitepaper/ (Bevy ECS visualizer concept). The evaluation against the design ledger found it re-litigates the settled web-from-disk visual-face fork (#101/#192/#209) on incorrect premises; the salvageable ideas (on-demand trace slices, sweep-surface heatmaps, param-binding-path highlighting) belong in the tracker, not a side doc.