Quantum-VES: Logarithmic Echoes from Information Dissipation at the Event Horizon

We introduce the Quantum-Viscous Emergent Spacetime (qVES) framework, in which spacetime geometry emerges from horizon-scale quantum decoherence. qVES predicts a unique gravitational wave signature: non-geometric echoes characterized by logarithmically regulated echo timescales governed by the scrambling bound of the cosmological horizon. Unlike phenomenological echo models, these timescales arise naturally from the zeros of the impedance function in a causal, viscoelastic membrane description. We demonstrate that the governing dynamics follow a hyperbolic Telegrapher's equation, providing a rigorous origin for damped wave reflections. qVES accounts for marginal, non-periodic residuals in GW190521, where the decoherence parameter \beta \approx 0.022 is consistent with reported chromatic residuals in the Pantheon+ supernova dataset.