Yasir-065/Chainlit-Assistant ? reverse-engineered prompt

Build me a simple AI chat assistant app using Chainlit and Python.

I want a clean chat interface where a user can ask questions and get helpful answers in a conversation that feels natural. Make it easy to run locally, keep the code organized, and add the basic setup a real app needs, like loading settings from an env file, handling chat history, and showing a nice welcome message. If it needs a model provider or API key, wire that in in a straightforward way and keep the setup simple.

Please make it polished enough that I can start it, chat with it, and extend it later without rewriting everything. If you need current Chainlit or model provider docs, look them up online first.