n = 670,617,279
370 steps to 1 · pair₀ (LSB) = left edge of GPK
steps 370
episodes 83
ep/steps 0.224
d=1 58%
peak 322,205,345,153
Red = pair₀=G (d=1, ×1.5 growth). Blue = pair₀≠G (d≥2, collapse).
Every red band is finite (Cor. 5.3: max burst ≤ ⌊log₂n⌋). The trajectory cannot diverge.