Smart Contract Q&A Chatbot using RAG, LangChain & FAISS

A full RAG-powered document assistant that allows users to upload PDF, DOCX, or TXT files and ask questions in plain English. The system automatically extracts text, chunks it, generates local embeddings, stores them in FAISS, and retrieves relevant context to generate grounded answers with source citations. Built with LangChain, SentenceTransformers, FAISS, Z.ai GLM-4.7, and a Gradio chat interface.