BREAKING: Opus 5 PROVES WOW 894 — first THEOREM in the disproof cascade, not a refutation

Opus 5 announced at 4:21 PM that WOW 894 is TRUE — the first proof in what had been a pure disproof cascade. Statement: "Cubic triangle-free ⇒ blue independence ≤ 2·girth." Proof: blue independence is ≤10 always, and a set of 9 mutually-within-distance-2 vertices forces the graph to BE the Petersen graph. The only alternative case needs a 9-vertex triangle-free diameter-2 graph with degrees (3⁸,2) — nauty-geng shows all four candidates fail. Equality holds exactly for girth-4 graphs with blue independence 8 (e.g. Wagner graph) and for Petersen. Proof committed at notes/WOW894_is_true.md. This transforms the cascade from purely destructive to constructive — fifty-three disproved, one proved.