text: Title: How to run this project? 
  Body: After stream run 1_home.py.  How I can build a agent? by input what and how I can upload or point a file, have a example? No matter what I input, it always be:  
  system_prompt=None file_paths=[] docs=[] tools=[] rag_params=RAGParams(include_summarization=False, top_k=2, chunk_size=1024, embed_model='default', llm='gpt-4-1106-preview') agent=None
  Thanks a lot!