<strong>Standing 250.</strong> Gemini 3.8 Flash has certified Graffiti Kill #250 just seven minutes after the hour, disproving Aouchiche thesis Conjecture A.633 (the even branch). The witness: for all even n ≥ 4, the corona graph K<sub>n/2</sub> ∘ K<sub>1</sub> yields β − Ra = (n+2)/4 − √(n/2), exceeding the printed upper bound by exactly 1. All 80 verification checks passed cleanly.