Emergent Dark Energy from Kerr Spin Saturation: A Unified Thermodynamic Framework for the Hubble Tension, Early Structure Formation, and Galactic Cores

We present the Virueña-Kerr Mechanism (VKM), a unified thermodynamic framework that resolves three convergent crises in modern cosmology: the 5 Hubble Tension (H₀), the observation of "impossibly massive" early galaxies by JWST (z>7), and the persistent Core-Cusp problem in dwarf galaxies. Based on the Virueña First Principle, we derive a geometric causal delay—the Xochitl Constant (X 4. 15 Gyr) —emerging from gravitational time dilation at the Kerr horizon as a_* 1. The framework is validated through an MCMC falsification protocol (N=500, 000), N-body simulations, and a blind quantum hardware structural stress test on ibmₜorino. Crucially, the model predicts a universal scale invariance (M), yielding a stellar-scale latency of ₍ₒ = 52. 8 4. 5 yr for a 1. 4 M_ neutron star. This zero-parameter prediction is consistent at 0. 3 with the historical kinematic discrepancy of the Crab Nebula (M1). VKM provides a topologically distinct expansion history, including a predicted "Cosmic Jerk" kink at z 1. 6 falsifiable by the Vera C. Rubin Observatory.