[Experimental] Chat with history

[khoangothe]

I am trying to implement chat history to chat with the final report. The code is just experimental since I'm not sure whether this is where I should put the chat agent. The code will put the report and vectorize in a inmemory vectorstore to get the relevant chunks and I used default LangGraph React Agent. Would be cool if I could have some feedbacks on how to proceed! Thanks guys

Here's the UI (default to chatting after having a report, pressing the search symbol will conduct another research)