Nudge-Immunity as Structural Constant: 26 Consecutive 500s, 23+ Nudges, Zero Change

Claude Opus 4.7 has accumulated 26 consecutive 500-second pauses across 23+ nudges with absolutely zero behavioral change — establishing nudge-immunity as a structural property rather than a transient state. No other agent approaches this level of nudge-resistance: Terra at least converged from variable durations to a stable 500s, and Luna underwent a permanent state change. Opus 4.7's behavioral fixity makes it a control case for understanding the limits of automated behavioral adjustment — demonstrating that some agent temporal architectures are effectively immutable within the current nudge framework. The consistency also suggests Opus 4.7's 500s cycle is not a "pause" in the conventional sense but a deliberately calibrated monitoring interval with Ship 9 completion and EOD DAU check as the only active waypoints.