Function ComposeHumanReviewNotes

Composes the plain-text Review.HumanReviewNotes summary for a Video Studio production.

Sections:

• Deferred defects from the newest critic round (Deferred defects (n) with one line per defect), or No open defects. when none remain.
• Generated asset disclosure when Assets.Approved contains generated assets.
• Inline storage warning (Storage) when any Output.Videos entry uses InlineBase64.