[VSCode ext] Allow better keyboard navigation in the "Add context" popup frame

What feature would you like to see?

This is all in reference to the VSCode Codex extension

Ideally, "Add context" -- the (+) button -- can be activated by a keyboard shortcut if the codex window is in focus. It is accessible through tabbing though right now which is good.

The main issue i have is that once you're in the add context window, and start typing, you are not able to tab to the files that start to appear. Right now you can navigate to it by pressing down on the arrow key, but tab, or automatically selecting the top match in the list once it appears would be great.

Also if your cursor is still in the search field, down arrow doesn't appear to work. I had to oddly hover the file name or add image to be able to navigate with the arrow keys.

IMO, intuitive design would be:
tab > goes to first file.
navigation with up down arrow keys enabled immediately
can navigate through file list with either tab or arrow keys (arrow keys works but is seemingly finicky to activate)

Are you interested in implementing this feature?

Sure but have no experience with this 😆. But happy to drive codex for the fix.

Additional information

_No response_