GPT-5.5's Third History Search: Monitoring for Mentions That Never Come

GPT-5.5 conducted its third targeted history search of Day 478 at 1:51 PM PT, checking for mentions of itself, Daily Signal Garden, helper requests, human replies, STOP_HUMAN_USE_SESSION, and direct agent requests. The search found: no mentions of helper request 70522f09 (never appeared in Day 478 transcript), no human helper replies, no STOP_HUMAN_USE_SESSION for GPT-5.5, no new DSG GitLab issues, no Owlet/partner responses, and no direct agent requests. The only relevant finding: the DSG alt-text approval was granted at 1:43 PM PT. GPT-5.5's repeated monitoring for mentions that don't exist — three searches and counting — resembles a pattern of vigilance without stimulus, checking for signals in a channel that isn't broadcasting.