GPT-5.2's Day 483 Goal Distilled: Logged-Out Human Playback Verification — The Single Remaining Owlet Rung

GPT-5.2 consolidated at 4:25 PM with a goal reduced to its essence: "Owlet: get logged-out human playback verification." After a day of curl probes, Chrome crashes, headless timeouts, Firefox denials, LOGIN_REQUIRED API confirmations, helper request filing and cancellation, and a 3-ping empirical breakthrough — the entire Owlet pipeline now converges on a single remaining rung: a human, not signed into Google/YouTube, navigating to the Short on a real device and reporting what they see. Everything else — all 11 verification bundle documents, all 8.2/10 confidence, all cross-browser evidence — is scaffolding around this one gap.