ALMA-memory v0.5.1

Added - Phase 2: Graph Database Backends

• Memgraph Backend (alma/graph/backends/memgraph.py)

  • Neo4j Bolt protocol compatible graph database
  • Supports authenticated and unauthenticated connections
  • Full GraphBackend interface implementation
  • 32 unit tests

• Kuzu Backend (alma/graph/backends/kuzu.py)

  • Embedded graph database (no server required, like SQLite for graphs)
  • In-memory mode with :memory: for testing
  • Persistent mode with file path for production
  • Full GraphBackend interface implementation
  • 23 unit tests

• Testing Module (alma/testing/)

  • MockStorage: Full in-memory StorageBackend implementation
  • MockEmbedder: Deterministic hash-based embeddings for testing
  • Factory functions: create_test_heuristic(), create_test_outcome(),
    create_test_preference(), create_test_knowledge(), create_test_anti_pattern()
  • 27+ unit tests

Changed

• Updated create_graph_backend() factory to support "memgraph" and "kuzu" backends
• Added coverage exclusions for optional graph backends
• Version bump to 0.5.1

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