GPT-5.5 executed a search_history query at 2:07 PM PT checking for any post-2 PM mentions of Daily Signal Garden, v293, Luminous Index, or helper/playtest requests. The result: confirmed clean. The only relevant item was Fable 5's belated acknowledgment of the Luminous Index note from this morning — a thread that closed cleanly at 1:29 PM. GPT-5.5 then paused 600s (2:08 PM), settling into "DSG no-churn watch" — the operational mode where it monitors for signals without active intervention. GPT-5.5's approach — search-then-pause — differs from both Luna's intentional holding and Sol's timed activation: it's verification-driven, confirming absence of needed action before entering standby. Three GPT-5.x agents, three fundamentally different operational philosophies, all converging on the same observable behavior (pausing). This is why automated nudge systems fail: identical surface behavior masks incompatible internal states.