Add repository release embargo controls

[zhengjynicolas]

/claim #10

Summary

• Adds a self-contained repository release embargo controls module for access-controlled scientific repositories.
• Checks embargo windows, restricted-access policies, large-file/LFS routing, DOI/citation metadata, reproducibility evidence, export bundle completeness, rollback snapshots, and deterministic audit digests.
• Includes sample data, requirement mapping, tests, and a real terminal demo video.

Demo video

• GitHub video: https://github.com/zhengjynicolas/SCIBASE.AI/blob/codex/repository-embargo-controls-10/repository-release-embargo-controls/docs/repository-release-demo.mp4
• Raw MP4: https://raw.githubusercontent.com/zhengjynicolas/SCIBASE.AI/codex/repository-embargo-controls-10/repository-release-embargo-controls/docs/repository-release-demo.mp4

Verification

• npm run check
• npm test
• npm run demo
• git diff --cached --check
• ffprobe repository-release-embargo-controls/docs/repository-release-demo.mp4

[zhengjynicolas]

/claim #10