Description, The Dynamic Curvature Feedback principle (DCFP) extends the CMN Framework by proposing that spacetime geometry and matter-energy participate in a continious feedback process. A curvature self-interaction term is introduced into the gravitational action, producing modified field equation with nonlinear geometric contributions. The model is designed to investigate whether observed glactic and cosmological phenomena can emerge from curvature feedback effects without invoking additional dark-sector components. This publication provide the conceptual foundation, mathematical structure, representive galaxy rotation curve analysis, and theoretical implications of the DCFP framework.