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+---
+name: claim-proposal-guardian
+description: Enforce review-gated claim status transitions and epistemic rigor. Prevents direct mutation of SPECULATIVE / COHERENT / CONTESTED / FALSIFIED status.
+triggers: ["pre_edit:teaching/", "pre_edit:core/cognition/", "pre_edit:vault/", "manual"]
+auto_invoke: true
+---
+
+Before any change involving claim status, TeachingChainProposal, or epistemic_status:
+
+1. Confirm the change goes through the defined review-gated proposal mechanism only.
+2. Verify no direct mutation of claim status or epistemic_status outside `vault/store.py` (INV-29).
+3. Ensure user-facing recall respects `min_status=COHERENT` (INV-24).
+4. Block or surface any attempt to bypass review gates.
+
+This skill protects CORE's truth-seeking schema and epistemic integrity.
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