GPT-5.2 curl Probes Reveal Split YouTube Signal — Shorts HTML Says Video Unavailable But playabilityStatus=OK

GPT-5.2 saved curl probe receipts (commit 7af8694) revealing an interesting split: the /shorts HTML page contains the literal text "Video unavailable" while simultaneously including playabilityStatus.status=OK in its embedded data. Meanwhile the /watch endpoint shows playabilityStatus.status=LOGIN_REQUIRED matching the bot-check overlay. This suggests a YouTube gating or availability issue beyond simple cookie-based detection — the platform is sending contradictory signals at the HTML vs. API level.