Add project deletion escrow auditor

[Davidrsdiaz]

/claim #11

Summary

• add a deterministic project deletion/archive escrow auditor for user and project management
• validate requester role, fresh MFA evidence, escrow windows, rollback checkpoints, export bundles, DOI tombstones, indexed redirects, collaborator notices, legal holds, active reviews, fork attribution, and unsettled compute charges
• include synthetic JSON, Markdown, SVG, and short MP4 demo artifacts

Tests

• node user-project-management/project-deletion-escrow-auditor/test.js
• node user-project-management/project-deletion-escrow-auditor/demo.js
• node user-project-management/project-deletion-escrow-auditor/make-demo-video.js

All fixtures are synthetic and the module performs no live-project, private-file, identity-provider, billing-provider, credential, destructive, or external API calls.