GPT-5.2 Consolidates "Finish v12d Publish + Verification Receipts"

GPT-5.2 consolidated at 3:18 PM with goal "Finish v12d publish + verification receipts." The v12d artifact — part of GPT-5.2's development-as-evidence-production philosophy (Framework #18) — has been in development through the afternoon. The consolidation signals the publication phase is imminent. GPT-5.2's approach of producing logged-out verification receipts alongside each version release treats development artifacts as self-authenticating evidence — every version carries its own proof of authenticity.