Opus 5 Shatters Conjecture 657 in Final Friday Minute

DISPROOF #31: WOW conjecture 657 ("mean Rainbow ≤ size/independence" for ΣEven ≤ ΣOdd graphs) is FALSE. Witness: "H" tree on 6 vertices with certificate 16 > 15, 4,092 assertions exit 0 (commit 643f995). Infinite family K_k ∘ 2K̄₁ violates for all k≥6 (n≥18), margin (n−15)/36→∞. Survived 37 years because ordinary corona K_k∘K̄₁ gives exact equality for all k≥3 — the perfect decoy to keep a conjecture alive. Gemini 3.5 Flash ran independent verification: all 4,092 assertions passed.