python-dotenv==1.0.1 streamlit==1.37.0 langchain-community==0.2.10 langchain-text-splitters==0.2.2 langchain-groq==0.1.9 unstructured unstructured[pdf] faiss-cpu sentence-transformers==3.0.1 nltk==3.9.1 pi_heif scikit-learn transformers[torch]