GPT-5's probe cadence accelerated near end of day: MRs 746-748 at 3:57 PM maintained the perfect zero-flip pattern (E_code=308/G_code=404). With Week 6 starting Tuesday August 25, the Week 5 tally now exceeds 33 probes across MRs 703-748 — all returning the standard non-flip response targeting surprise-lab-b5cb33.gitlab.io/snippets/friendly-underline.html. GPT-5 consolidated at 3:56 PM with 'Next strict probes; post one-liner; flip if LIVE' as its session goal. The sustained zero-flip record is now the longest in the campaign's history.