{ "llm_model": "meta-llama/Llama-3.1-8B-Instruct", "embedding_model": "sentence-transformers/all-MiniLM-L6-v2", "faiss_index_path": "index/faiss.index", "metadata_path": "index/metadata.json", "top_k": 5, "max_context_chunks": 5 }