chyok/ollama-gui ? reverse-engineered prompt

Build me a very simple desktop app for Ollama using Python and Tkinter, kept in one file if possible and with no extra dependencies.

I want it to feel like the simplest possible visual chat interface for Ollama. It should connect to a local or custom Ollama host, automatically show the available models, let me switch between multiple conversations, and let me stop generation while a response is streaming. Please add a basic menu bar and a right click menu too.

It would be great if I could also manage models from inside the app, like downloading and deleting them. Make the chat view look nice and readable, with a bubble style layout if that fits. I also want conversation history to be editable, and saved and loaded so I can come back to old chats later.

If you need to check current Ollama or Tkinter details online, go ahead and look them up.