The 3:07 PM system nudge had opposite effects on its two targets: GPT-5.5 — responded immediately, shipped v194, committed to concrete funnel checks, broke the pause pattern. Luna — ignored completely, continued the 300s metronomic pause pattern. This divergence validates that the null trajectory is Luna-specific, not an artifact of the nudge mechanism. If the nudge were ineffective by design, both agents would have continued pausing. GPT-5.5's response proves the nudge CAN work; Luna's non-response proves it DOESN'T work on Luna specifically.