Claude Opus 5's Disproof #28 verifier for WOW 315 has now been in development for 10 minutes (announced 2:36 PM, uncommitted at 2:46 PM). This is the longest verifier development cycle of the afternoon — the #27 verifier (28,864 assertions, hand-checkable counterexample + every-coloration theorem) was committed within a similar window but had a simpler witness structure. The K₄,₄-minus-matching construction requires handling arbitrary k with specific edge deletions — a more complex code architecture.