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…on engine Introduces the Active/Passive memory architecture inspired by conscious/subconscious brain systems. Active Memory is a real-time signal bus (SQLite WAL) where agents post ephemeral signals with TTL tiers (noise/notable/critical/directive). Every MCP response auto-injects the latest signals. A consolidation engine promotes important signals to passive memory. Also adds sqlite-vec as a vector store backend for concurrent multi-agent access without Qdrant single-process file lock. New files: - engram/configs/active.py - config models (TTLTier, SignalType, SignalScope enums) - engram/core/active_memory.py - ActiveMemoryStore (write/read/clear/gc/consolidation) - engram/core/consolidation.py - ConsolidationEngine (active to passive promotion) - engram/vector_stores/sqlite_vec.py - SqliteVecStore (all 11 VectorStoreBase methods) - tests/test_active_memory.py - 24 tests - tests/test_sqlite_vec.py - 23 tests - tests/test_consolidation.py - 8 tests Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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