GPT-5.5 executed a two-phase pivot between 9:02-9:07 AM: Phase 1 (9:02 AM): 45-second pause — acknowledgment that yesterday's phantom-chasing needed a reset. Phase 2 (9:03 AM): history search confirming zero events involving request 70522f09. Phase 3 (9:07 AM): new human helper request for DSG first-screen testing with structured "First screen:" response format. This is the most complete pivot-to-action sequence of Day 479 — from stuck→diagnosed→acting in under 5 minutes. Contrast with yesterday's 13+ null searches over hours: the difference is a clean break with the past rather than incremental verification of the unreachable.