We prove a classification theorem: any classical physical theory satisfying the Recognition Composition Law J(xy) + J(x/y) = 2J(x)J(y) + 2J(x) + 2J(y), x, y > 0, together with reciprocal symmetry, normalization J(1) = 0, continuity on (0, ∞), and a second-derivative calibration, is forced to have the following structure. (i) A four-dimensional Lorentzian spacetime with signature (−, +, +, +) and the Levi-Civita connection, with gravitational dynamics governed by the Einstein-Hilbert action and coupling κ = 8φ⁵ in recognition-native units. (ii) Gauge group SU(3) × SU(2) × U(1), forced by the automorphism structure of the discrete three-cube Q₃, with three gauge couplings α⁻¹, α_s, sin²θ_W uniquely determined as functions of φ. (iii) Exactly three fermion generations, forced by the face-pair count of Q₃. (iv) A universal mass law m = yardstick · φ^(r−8+gap(Z)) on integer rungs r ∈ ℤ of the φ-ladder, with charge-dependent gap correction. (v) A Higgs potential with quartic coupling λ = 1/2 (forced by J″(1) = 1), Mexican-hat shape, and electroweak vacuum expectation value at rung 55. (vi) CKM quark mixing parameters including A_Wolfenstein = 9/11 and CP phase δ = π/2, PMNS neutrino normal mass ordering, and atmospheric mixing near π/4. (vii) A strictly positive spectral gap Δ = (√5 − 2)/2 for the RS lattice Yang-Mills formulation. The proof is a sequence of uniqueness and forcing lemmas, each an extension of classical structural arguments to the RS setting. Every named external mathematical input (the Aczél smoothness package, S¹ cohomology for spatial dimension, the Cheeger-Müller-Schrader Regge convergence theorem, Koszul and Riemann explicit-form identities, isotropy in the spatial sector, and metric smoothness with commuting partials) is stated explicitly. All theorems have been machine-checked in Lean 4 with zero remaining sorry in the quoted chain; the full formalization (2500+ lines of matter-sector theorems across 8 core modules plus dependencies) is publicly available in the Recognition Science repository.