节点过多的话，构建 faiss_filter会出错

[lybtt]

[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2199 - Indexed 6000/7107 nodes
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2199 - Indexed 7000/7107 nodes
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2206 - Time taken to build node text index: 0.00603795051574707 seconds
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2228 - Saved node text index with 6494 words to retriever/faiss_cache_new/test/node_text_index.pkl (size: 356795 bytes)
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2351 - Precomputing chunk embeddings for direct chunk retrieval...
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2574 - Loaded chunk embedding cache with 1014 entries from retriever/faiss_cache_new/test/chunk_embedding_cache.pt (file size: 1857728 bytes)
[2025-10-20 17:28:55] INFO     enhanced_kt_retriever:2353 - Successfully loaded chunk embeddings from disk cache
[2025-10-20 17:28:55] INFO     faiss_filter:856 - Building FAISS indices and embeddings...
./start.sh: line 27: 38579 Segmentation fault: 11  python backend.py
👋 Youtu-GraphRAG server stopped.
/opt/homebrew/Cellar/[email protected]/3.10.17/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/resource_tracker.py:224: UserWarning: resource_tracker: There appear to be 1 leaked 
semaphore objects to clean up at shutdown
  warnings.warn('resource_tracker: There appear to be %d '

如果