I'm using the Universal Summarizer a lot on my mobile, and clearing input on mobile is annoying (you need to focus carefully to place the cursor at the end of the input to delete it). It would be great to have a 'clear input' button somewhere.
After using clear button, the focus should return to the input field, similar to how it's done in Kagi Search.
On mobile, maybe the 'clear input' button could replace the submit button, as most people probably submit inputs directly from the keyboard?