[FEATURE]: Display agent descriptions as scrolling marquees

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

My problem is that selecting between agents while maintaining full context on what each does is difficult because the agent descriptions are truncated depending on the terminal width.

Here is my proposed solution: Upon hovering over a list item and after a second, if its description does not fit on the screen, it starts scrolling through its text character-by-character, becoming a marquee that loops endlessly. The end of the description is delimited by several spaces in a row. If the item becomes unfocused, its description resets to its start.

This feature can be extended to other parts of the interface that also display item names and descriptions side-by-side in a list view.