IV.R415 — CDF–ATLAS W Mass Tension and τ³ Prediction

CDF 2022: 80,433.5±9.4 MeV (τ deviation: −800 ppm). ATLAS 2024: 80,360.2±7.2 MeV (τ deviation: +112 ppm). PDG 2024 combination: 80,369.2±1.3 MeV (τ deviation: −0.5 ppm). The τ³ prediction is structurally fixed by ι_τ and was not adjusted in response to any experimental update. CDF tension (7σ from SM) does not affect the τ³ framework.