Add enterprise grant portfolio compliance

[sypham98-prog]

/claim #19

Summary

• Add a distinct enterprise grant-portfolio compliance module for funder mandate tracking.
• Evaluate open access, data management plans, repository deposits, DOI evidence, ORCID coverage, and funder report due dates from synthetic institutional grant data.
• Produce admin metrics, export readiness decisions, action queues, signed event payloads, docs, tests, and demo artifacts.

Demo

• enterprise-grant-portfolio-compliance/docs/demo.gif
• enterprise-grant-portfolio-compliance/docs/demo.svg
• npm run demo prints the portfolio status and signed event digest locally.

Verification

• npm run check
• npm test
• npm run demo
• git diff --check

Non-overlap

This slice is focused on grant-portfolio obligations and funder mandate certification. It does not duplicate the existing broad dashboards, export package builders, compliance evidence packets, webhook replay ledgers, identity provisioning drift, legal hold, or data residency submissions.

[sypham98-prog]

Withdrawing this PR from my active bounty queue because the bounty instructions require a short demo video, and I am filtering out video-required bounties going forward. Thanks for the review.