feat: redesign multi-hop reasoning, add sticky layout, query logs history tracking, and hybrid fallback search

Update Multi-Hop Reasoning View with modular PathView and dynamic highlighting

feat: improve graph visualization, stabilize multi-hop path reasoning, and update multi-hop page styling

feat: add Screen 4 - Multi-Hop Reasoning page

feat: simplify graph visualization to 3D only, implement 3D camera controls, and persist document states globally

Fix: Resolve 0-entity extraction error by adding NVIDIA LLM integration and robust error handling

feat: complete frontend and backend integration and security configurations

initialise the Graphrag knowledge ai