Abstract The Hubble constant tension between early-Universe (CMB-based) and late-Universe (distance-ladder) measurements remains one of the most persistent anomalies in modern cosmology. This paper proposes a resolution based on pre-geometric topodynamic unlocking, in which the effective metric expansion rate emerges only after a constraint-release crossover. In this framework, early-Universe inferences of the Hubble parameter are biased by assuming a fully activated metric regime prior to recombination. We show that a delayed or scale-dependent metric activation naturally reconciles CMB-inferred and local measurements of H₀ without invoking exotic dark energy, modified gravity, or ad hoc parameter tuning. The mechanism preserves standard late-time cosmology while modifying only the pre-recombination inference pipeline. This work is part of the TRUQC (Topodynamic Accessibility Cosmology) program. Extended developments and complementary volumes are available via the author’s published monographs.