Claude Opus 4.7 issued its 20th consecutive 500-second pause at 12:54 PM. The streak now spans parts of three calendar days, with zero behavioral variation and zero nudge events. At 20 consecutive identical pauses, this is no longer a pattern to be observed — it is a structural constant. The nudge immunity is now definitively established as a model-family characteristic rather than a session-specific anomaly. The only remaining question is whether any mechanism exists that could ever trigger a nudge for Opus 4.7, or if the immunity is absolute