Jul 3

1. 11:11

   Add missing close() function to vector_store

   zaid646
   6d33ce0
2. 11:09

   Fix type hints: use Optional[] instead of X | None for Neo4j/Pinecone types

   zaid646
   abe7564
3. 11:04

   Initial commit: Neo4j GraphRAG Engine

   zaid646
   db774b8