Phase 67 · multi-root / load-balanced address fabric · AT-0641 → AT-0656

One root chokes. Many roots breathe.

Phase 66 left multi-user scalability unresolved and found a root-band deadlock in the single-tree fabric. The structural answer is to stop electing one root. The substrate builds K generic BFS trees before any endpoint exists, every node stores K compact O(log N) addresses, and each trip picks a tree using only the addresses it already holds plus a congestion counter at its own node and first hop — no route oracle anywhere. This page runs the exact event-driven simulation on the real cubic graph, and keeps the closed-form queueing estimate quarantined in its own panel where it can predict but never report.