feat: add predicate relationship metadata#5

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feat/predicate-metadata-backfillfrom

feat/predicate-relationship-metadata

Commits on Jun 1, 2026

feat: add schema.org vocabulary package
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Commits on Jun 2, 2026

fix: make schema.org generation hermetic
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Commits on Jun 3, 2026

feat: add metadata predicate backfill tranche

Jonathan Prozzi
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feat: add predicate relationship metadata
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