IV.T180 — Muon g−2 from τ³ at +8.8 ppm

a_μ(τ) = a_μ^QED(α_τ) + HVP + HLbL + EW. The α_τ shift (+9.8 ppm) propagates into +1141×10⁻¹¹ QED shift, giving total a_μ(τ) at +8.8 ppm from Fermilab 2024 final (116592059±22×10⁻¹¹). Prediction independent of R-ratio vs lattice HVP choice: α_τ uncertainty (1141×10⁻¹¹) overwhelms both the anomaly (249×10⁻¹¹) and lattice/dispersive gap (144×10⁻¹¹). Zero free parameters.