IV.D29 — Strong Near-Match

Strong coupling near-match: 2·κ(C) = 2·ι_τ³/(1−ι_τ) ≈ 0.1208 vs α_s(M_Z) = 0.1180 (CODATA 2022). Deviation ~2.4%. τ-approximation overshoots. Range proof: 2·κ(C) ∈ (0.119, 0.122).