argenis de la rosa
bb7006313c
feat(memory): layered architecture upgrade + remove mem0 backend
Implement 6-phase memory system improvement:
- Multi-stage retrieval pipeline (cache → FTS → vector)
- Namespace isolation with strict filtering
- Importance scoring (category + keyword heuristics)
- Conflict resolution via Jaccard similarity + superseded_by
- Audit trail decorator (AuditedMemory<M>)
- Policy engine (quotas, read-only namespaces, retention rules)
- Deterministic sort tiebreaker on equal scores
Remove mem0 (OpenMemory) backend — all capabilities now covered
natively with better performance (local SQLite vs external REST API).
46 battle tests + 262 existing tests pass. Backward-compatible:
existing databases auto-migrate, existing configs work unchanged.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>