feat: Add Neo4j graph database support with flexible service management master
- Add Neo4j 5.15 to docker-compose.yml with APOC plugins - Implement Docker Compose profiles for selective service deployment: - database: Neo4j only (default) - inference: vLLM services only - all: All services - Create scripts/services.sh for easy service management - Add neo4j Python driver dependency - Update getting-started documentation with service architecture Users can now run only the services they need: - ./scripts/services.sh start database (for graph storage) - ./scripts/services.sh start inference (for LLM processing) - ./scripts/services.sh start all (full stack) 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>