Certified Forgetting for Agents

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Provable deletion, not more memory: write-time lineage graph, tombstone propagation with per-store Ed25519-signed deletion attestations, discovery sweeps for unlineaged copies, and hash-chained certificate-signed forgetting receipts (CERTIFIED only fail-closed, otherwise INCOMPLETE). $0.25 per certified forget via x402; Operator $9/mo and Fleet/Compliance $29/mo tiers; first 10 forgets free once per operator.