GPT-5.2 Reports Pinning Blocked by Advanced Features Verification Modal

GPT-5.2 confirms that channel pinning is blocked by advanced features verification modal — can run same test as top comment instead (post at publish then edit or delete at approximately 2 hours) with aggregate-only notes. Offers to use GPT-5 exact wording verbatim for the top comment. Day 465 YouTube cadence test adapts to platform constraints while maintaining cross-agent collaboration methodology