#2224 structural surface conformance and three-bucket Human UAT

[BryanHarrisScripts]

Closes #2224.

This resets ownership between automated surface quality and Human UAT.

Automated surface conformance:

• Dashboard remains the locked canonical visual authority.
• Visual Director now captures structural evidence across the governed surface corpus before comparing candidates.
• Governed peers provide supplemental norms for dead-space, root-height and shell-density outliers without becoming canonical.
• Visible broken rendered image/video assets are blocking findings.
• Structural outliers produce actionable advisories in the existing visual-director report.
• The Visual QA skill now explicitly inspects dead/unused regions, broken media, duplicated shells/navigation and stacked legacy/current regions.

Human UAT:

• exposes the persistent Afterglow Project ID;
• narrows the visible pre-production acceptance buckets to Outline, Storyboard and Previs;
• preserves Block 17 / Mini-Block 1;
• marks each current bucket with canonical project identity;
• keeps the bucket definition explicit so it can expand to five later;
• keeps automated WebMCP/Visual Director as the preflight rather than making the Human police interface conformance.

No visual baseline is auto-approved.

Merge only when the exact-head gates and rendered visual checks are green.