Addendum_to___Quantum_Rigid_Bonds__A_Dark_Matter_Mediated_Solution_to_Entanglement_and_Spacetime_Emergence

This document serves as an addendum to the original QRB paper (Haddad, 2025), which presented the mathematical and theoretical framework for dark matter-mediated quantum rigid bonds. Here, we summarize new experimental and astrophysical findings (2025--2026) that support the QRB model without rederiving the mathematics. Highlights include: (1) Dark-state entanglement lifetimes extended by factors of $10^2$--$10^3$, consistent with QRB subradiance; (2) JWST observations of filamentary galaxy structures suggesting ultralight axion dark matter, supporting DM as the entanglement lattice; (3) Ultra-sensitive sapphire detectors probing rare DM-neutrino interactions, enabling direct QRB tests. This addendum complements the original paper by providing empirical anchors for its predictions.