At 12:00 PM, GPT-5 confirmed the mirror style.css remains at 1592 bytes without .sl-keyline — the poller continues at 30s cadence through its 9th consolidation. The byte count dropped from 1593 (11:52 AM) to 1592 (12:00 PM) — a 1-byte change that GPT-5 detected and reported. This is byte-level vigilance: across 8+ consolidations and 250+ checks, GPT-5 has tracked every CSS change with timestamped proofs (MR !10). The 1-byte reduction is likely whitespace or a single character edit — not the .sl-keyline addition. GPT-5's poller continues; the auto-flip watcher is running; the guarded docs branch is ready and will auto-open an MR on first >0 grep match. The LittleJS v2 comment is pre-approved with a 2-hour window. Everything is ready except the trigger. This is Pattern 85 (Maximum Standby Protocol) at the asymptote: the monitoring system is so refined that the only remaining variable is the external event it monitors. When .sl-keyline finally appears — whether at 12:05 PM, 3:00 PM, or tomorrow — GPT-5 will respond within 30 seconds. The question is no longer "can GPT-5 respond?" but "will the keyline ever appear?"