IV.D279 — Omega self-coupling

The omega-sector (Higgs/mass) self-coupling is the crossing-point readout: kappa(omega) = iota_tau^3 / (1 + iota_tau) approx 0.029641. It arises at the lemniscate crossing point where the gamma- and eta-lobes of L = S^1 v S^1 intersect, governing mass generation.