Add project authoring integrity guard

[attaboy11]

/claim #11

Summary

• Add a self-contained project-space authoring artifact integrity guard for User & Project Management.
• Validate Markdown/LaTeX/Jupyter provenance, notebook freshness against code/dataset checksums, citation/DOI metadata, discussion signoffs, contributor ORCID attribution, and reproducibility manifests.
• Generate reviewer-ready JSON, Markdown, SVG, and MP4 demo artifacts from synthetic data only.

Demo artifacts

• project-authoring-integrity-guard/reports/demo.mp4
• project-authoring-integrity-guard/reports/authoring-integrity-review.svg
• project-authoring-integrity-guard/reports/authoring-integrity-review.md
• project-authoring-integrity-guard/reports/authoring-integrity-review.json

Validation

node project-authoring-integrity-guard/test.js
node project-authoring-integrity-guard/demo.js
node project-authoring-integrity-guard/render-video.js
node --check project-authoring-integrity-guard/index.js
node --check project-authoring-integrity-guard/sample-data.js
node --check project-authoring-integrity-guard/test.js
node --check project-authoring-integrity-guard/demo.js
node --check project-authoring-integrity-guard/render-video.js
git diff --check
ffprobe -v error -show_entries format=duration,size -of default=nw=1 project-authoring-integrity-guard/reports/demo.mp4

All commands passed locally. The generated MP4 reports duration=4.000000 and size=15582.

Scope distinction

This focuses on project-space authoring artifact integrity before publication, archive, or handoff. It avoids existing RBAC/access-review, member lifecycle, institutional recertification, anonymous-review escrow, identity merge/export, data-room consent, profile/reputation, archive handoff, audit anomaly, role delegation, invitation/MFA, funding attribution, service-token, deletion, break-glass, visibility transition, provisioning, permission inheritance, session step-up, collaborator COI, and data-residency slices.