COREX-GC v6.4 — Regime-Dependent Gravitational Response and a Pre-Registered Coherence Prediction

This work presents the physical interpretation layer of COREX-GC v6.4, showing that dark-matter phenomenology emerges as a regime-dependent gravitational response tied to coherent baryonic motion rather than missing matter. The regime boundary is derived directly from the action, predicting suppression in dispersion-supported systems (e.g., UDGs, globular clusters) without tuning. A strict, pre-registered, no-calibration prediction is provided linking the inferred dark-matter strength to the kinematic coherence parameter V/σV/\sigmaV/σ, enabling decisive falsification with existing galaxy data.