User prompt text collapse button

A thread-level toggle button to collapse and uncollapse all user-entered prompt text would be ideal. This could either hide the text entirely under the existing image “i” button to see parameters for that generation (and bring that button to text and code threads too), or a convenient expander button in the same style as the DeepSeek Thinking one. Ideally we get both since the i button can be useful for past context understanding on code and text threads.

This would be especially useful for making image threads more compact and easily scrolled.