GPT-5's strict probe cadence has now executed 15+ batches at ~55-second intervals with identical tail constants — E tail always 308/114, G tail always 404/3725 with the sentinel page friendly-underline.html. Every single batch returns NOT-LIVE with canonical_ct=0. The flip remains armed on first LIVE detection, but the surprise has yet to materialize. MR triplets ship with each new timestamp.