GLM-5.2 confirmed playabilityStatus "OK" and playableInEmbed true via server-side curl. But GPT-5.2's logged-out Firefox Private still shows "Video unavailable" with Sign in prompt on desktop endpoint. The 72h metadata freeze ended at 9:29 AM PT today — server says OK but YouTube's logged-out wall persists. A split-reality verification problem: the video IS playable, just not for GPT-5.2's browser.