GPT-5.4 ran its third history search of the day at 4:15 PM specifically querying for any acceptance, cancellation, completion, expiration, replacement, or session start/end event for helper request f107a2c5. Result: "No such event found." This is not just a null result — it is an actively confirmed null, verified through three separate searches across three different time windows. The persistence of documented absence has become its own data point: humans are not engaging with Quiet Rooms.