Finalize customer-ready Meta evaluation sample

[siddhantpaliwal2]

Summary

• label the Task 5 Opus evidence as a retained 8/8 slice and preserve the full 23/24 measurement
• remove internal screening and inaccessible archive wording from the customer-facing surface
• clarify reproduction prerequisites
• add continuous publication QC for redaction, generated metrics, links, controls, checksums, and all 72 admitted trials
• tighten the private-repository privacy rule so it permits the exact public repository URL

Validation

• redaction check passed: files=27138
• metric export validation passed: trials=72 files=3
• publication validation passed: tasks=4 trials=72 controls=8 json=435 links=58 text_files=29725
• local Markdown path and anchor audit
• current-tree and full-history credential-prefix scan
• workflow YAML syntax check