Neutrino Mass Ordering as Weakly Projected Closure in ψ₀–OCM

This paper develops a quantitatively testable neutrino-sector reduction within ψ₀–OCM, interpreting neutrino mass ordering, PMNS structure, and weak cosmological transport as correlated expressions of weakly retained closure. Neutrinos are modeled as near-threshold stabilization modes generated by incomplete boundary-mediated redistribution closure, distinct from the compact PDS–1 stabilization associated with charged leptons. The framework derives a structurally preferred normal-ordering spectrum, a low total mass regime near Σmν ≈ 0.061 eV, and leading-order PMNS closure relations linking θ13 suppression, broad θ12/θ23 mixing, and weak-sector overlap geometry. It further develops benchmark predictions, uncertainty propagation, covariance/statistical testing structure, radiative-correction allowances, and explicit falsification criteria. The proposed realization is challenged by robust inverted ordering, a substantially elevated absolute neutrino mass scale, large PMNS residuals incompatible with weak-overlap geometry, strong sterile-sector requirements, or neutrinoless double-beta decay evidence implying a quasi-degenerate or high-scale Majorana spectrum.