feat: Concept Substrate — link repos by shared concepts (Pillar 3, Spec 2a)#38

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feat/concept-substrate

Commits on Jun 17, 2026

docs(spec): Concept Substrate (Pillar 3, Spec 2a) design
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docs(plan): Concept Substrate implementation plan (Pillar 3, Spec 2a)
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feat(concepts): pure concept index + lexical/embedding link matchers
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feat(concepts): IDB concepts store + CRUD persistence
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feat(concepts): persist deep-dive atoms to the concept store
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feat(concepts): provider embeddings-capability registry helpers
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feat(concepts): callEmbeddings + embed atoms on deep dive (provider-gated)
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fix(concepts): emit embeddings-model override slot so it loads at runtime
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Commits on Jun 18, 2026