This paper presents a structural conjecture concerning the origin of the fine-structure constant α within the ENSO (Emergent Non-Local Structural Ordering) Framework. Building on the φ-attractor cascade — in which stochastic recursion converges to the golden ratio φ, generating the Resolution Gap R = ln φ / ln π and the closure constant Z₀ = φ³/R² ≈ 24 — the paper proposes a natural extension to observable physics through the Keyhole Equation: α⁻¹ = 10πφe − ln π ≈ 137.031, with relative error 3.6 × 10⁻⁵ against the CODATA 2018 value. This paper forms part of the broader ENSO Framework, which has generated independent zero-parameter predictions across particle mass ratios, prime gap structure, and physical constants through the Pi-Phi-Light Framework, the Resolution Gap, and the Needham Scaling Constant family. The central argument introduces a categorical distinction between pre-geometric constants (π, φ, e), which exist as logical necessities before spacetime emerges, and post-emergent constants such as α, which require a spacetime arena. The Poincaré group ISO(3,1), with dimension N = 10, is identified as the structural bridge between these two levels, yielding the Temporal Ladder: 3 operators → 10 spacetime generators → 24 rotational closure → α. The integer N = 10 is not a free parameter but emerges as a stable near-integer invariant when α is expressed in Trinity operators. A three-part null test — Monte Carlo simulation (1,000,000 samples), comparison against eleven real physical constants, and perturbation stability analysis — rejects the coincidence hypothesis at the 99.93% confidence level. All 45 numerical claims in the paper are verified by an accompanying Python validation script (45/45 PASS). Two figures illustrate the cascade architecture and the internal decomposition of the Keyhole Equation. This work is presented as a speculative but coherent, falsifiable, and statistically non-trivial structural conjecture, not as a derivation of α. For further information about the ENSO Framework, please contact Eric Needham: ensotheory1@gmail.com