- Add POST /v1/canonical/generate/backfill-anchors endpoint for batch
populating open_anchors on controls generated with skip_web_search=true
- Uses AnchorFinder Stage A (RAG search) to find OWASP/NIST/ENISA refs
- Background job with progress tracking (same pattern as other backfills)
- Promotes needs_review controls that gain anchors to draft state
- Target audience normalization (enterprise/authority/provider → JSON arrays)
already applied via SQL
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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