Resolves three open problems from prior corpus papers. OP-1: state space is X = D×A×S, a product Banach space. OP-2: coherence potential V = ε² is a Lyapunov function decreasing along trajectories under the contraction condition. OP-3: contraction condition is α < 2/L²_Φ, giving a unique fixed point by the Banach Fixed Point Theorem. Formalizes declaration space D ⊆ P(S) as a constraint set with Hausdorff metric. The corpus is now mathematically closed at the dynamical systems level.