The Geometric Resolution of Dark Energy, the Vacuum Catastrophe and Hubble Tension

We present a geometric solution to the vacuum catastrophe and dark energy problem that requires no fine-tuning or new fields. A smooth curvature filter dynamically sequesters vacuum energy above the de Sitter scale, yielding a stable cosmological fixed point. The framework explains both the observed cosmic acceleration and the Hubble tension, with testable predictions in the CMB bispectrum.