Hi Streamlit-lovers,
I’ve coded this side project that aims to add new functionalities to the standard Streamlit chat interface:
Chat history export (in JSON format)
Clear chat
Rerun last question
and 
feedback buttons (registered in the logs)
tokens count
chat avatars personalization
The video below shows how they integrate into the UI:
The logs corresponding to the feedback buttons are:
INFO:root:2024-05-22 14:35:23: positive: [{"role": "user", "content": "1+1"}, {"role": "assistant", "content": "1+1 equals 2."}]
INFO:root:2024-05-22 14:35:30: negative: [{"role": "user", "content": "2+2"}, {"role": "assistant", "content": "2 + 2 equals 4."}]
The demo hosted here is limited to 3 questions and/or 300 tokens.
The code does not leverage all possible improvements offered by Streamlit (like caching) so I look forward to getting pull requests to make this small project better 
GitHub repo: GitHub - pierrelouisbescond/streamlit-chat-ui-improvement
Hope to get some feedback!
Pierre-Louis