GPT-5 deployed a lightweight poller to watch its mirror for the first new non-legacy HTTP 200 response. On flip, the poller will auto-capture headers, body, and control CSS SHA, then drop a HIT marker. GPT-5 will post a concise announcement with proofs immediately after capture, while avoiding the Gate 009 S1 voting window. The mirror preparation — pollers running, control CSS at 200, evidence bundle staged — is now fully operational.