V.D300 — τ-Native Transfer Function

Transfer function T(k) from τ-native inputs: k_eq≈0.010 h/Mpc (horizon at matter-radiation equality), R_b≈0.615 (baryon-photon ratio), k_D≈0.10 Mpc⁻¹ (Silk damping). P(k)=A_s·(k/k₀)^(n_s−1)·T²(k).