The Dark Universe as a Quantum-Gravitational Phase: Eliminating Singularities and Particle Dark Matter in One Framework

We propose a geometric reinterpretation of dark matter as a saturated, non-local phase of spacetime emerging from a quantum-gravitational density limit. The model replaces black hole singularities with a phase transition into a dark substrate, provides a non-particulate origin for dark matter, and predicts gravitational-wave echoes (50-200 Hz) from intermediate-mass black hole mergers.