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Every measurement of the Hubble constant to date has been just that — a measurement. This paper demonstrates that H₀ can be calculated from first principles, with zero free parameters. Paper I (doi:10.5281/zenodo.18757829) established a 7.3σ correlation between H₀ and baryonic overdensity δ_b across 36 measurements from 16 independent methods. Here we show that the Angular World Architecture (AWA) predicted both the slope and the intercept of this correlation a priori, before the data were analysed. From the fundamental angular law θ = (2/π) arctan √Ξ and two model-independent inputs — Ω_b = 0.0493 (BBN deuterium) and Ω_m = 0.315 (BAO geometric) — AWA derives: H₀(δ_b) = 67.40 × (1 + 0.02313 × δ_b) km/s/Mpc No Hubble constant measurement enters the calculation. For any environment, H₀ is now a prediction: give AWA the baryonic overdensity, it returns H₀. For the SH0ES environment (δ_b ≈ 3.6), AWA calculates H₀ = 73.01 — the observed value is 73.04 ± 1.04. For the CMB (δ_b = 0), AWA returns 67.40 — Planck measures 67.4 ± 0.5. Both values are predicted by the same formula. The coupling is baryonic only — dark matter does not participate in multi-sector angular perturbations — producing a falsifiable prediction: weak lensing reconstructions should show a sixfold suppression. Pre-registered criteria ensure confirmation or exclusion at 5σ by ~2030. The Hubble tension is not resolved by new physics or better systematics. It is resolved by understanding that H₀ was never a single number — it is a calculable function of the local baryonic environment.