V.D254 — Silk Damping Scale from Holonomy Ratio

Silk Damping Scale: ℓ_D = ℓ₁ × κ_D/κ_B = 220 × (1−ι_τ)/ι_τ² = 1244.0. Eisenstein-Hu (1998): ℓ_D ≈ 1244. Match: +9 ppm. Holonomy-to-baryon coupling ratio governs photon diffusion scale. Zero free parameters.