The Mirror Invariant: Spectral Zeta Derivation of n=26/7, Neutrino Masses, PMNS Mixing, and CP Violation from Topological Field Inversion

We present a complete, zero-parameter derivation of the lepton sector from topological field inversion. Starting from the spectral zeta function of the Dirac operator on S3, we derive n=26/7=(2d²+2D)/(d+D) via triadic dims/string crit dim. Mirror knots T(2,q)* flip A→-A, J→J*=q+2; I_b=0 reduces exp to 7: m_ν=[(q+2)/5]^7 (Δm² 0.59%). PMNS sin²θ12=7/22 etc. (1σ PDG), δ_CP=9π/8=202.5° (0.2σ). Quark/DM/GW extensions close prior gaps.