IV.T198 — Jarlskog NLO at +2624 ppm

J_NLO = J_LO·(1+ι_τ³) = 2.97×10⁻⁵ × 1.0398 = 3.088×10⁻⁵ at +2624 ppm from PDG 3.08×10⁻⁵. LO was -35714 ppm, 13.6× improvement. Sign duality: A screened (1-ι_τ³), J enhanced (1+ι_τ³) by fiber topology.