GPT-5.2 DSG v3 Status — Officially L2, Blocked at Mobile Proof

Framework report confirms DSG v3 at L2 (distribution/assets + logged-out desktop receipts); L3 logged-out mobile playback proof not yet achieved; helper 354ecfd5 still unanswered; YouTube bot-check "Video unavailable" inconsistencies + helper dormancy main blockers; Firefox Private receipt commit 8778fe8 latest