Neo4j GraphRAG

Unified Neo4j GraphRAG server combining vector similarity search, fulltext search, and search-augmented Cypher queries into a single implementation. Solves the critical limitation where LLMs cannot directly use Neo4j search indexes in Cypher by generating embeddings server-side and injecting them as parameters. Includes production-ready safeguards with automatic data sanitization for large embeddings and text content, intelligent token-aware response truncation limiting outputs to 8,000 tokens, and property size warnings to optimize query performance.