Save the user prompt that is sent from web terminal

I am trying to save the user prompt to a log file but this program receives every key that is pressed by user without filtering any. Is there any way to save only the input when pressed enter?

Start by tracing how the Flask web terminal receives key events and where the user input is assembled before it is sent or logged. Check the terminal-side JavaScript and the Python server path, then determine how Enter-delimited input should be captured. Done means only completed prompts, rather than individual key presses, are written to the log file.

Written by the indexing model from the issue text.