Publish the clean-split retrain as revision clean-2026-08-21, and say which revision the numbers describe

Correct the headline to +28.1% on a clean, document-isolated split

Fix card: YAML frontmatter first (HF metadata), drop internal note

Publish embed-statute-en v1.0.0 (internal run statute-en-e2): English central-statute retriever, +48% R@1, +131% low-overlap slice, disjoint CIs