This TUI app attempts to solve that issue. It caches the GitHub api responses so that you can open and close it often without loosing the previously fetched PR list (fetching a list of PRs can be slow due to GH search api rate limit). It displays the timestamp of the fetched PRs so you know if you would like to refresh to prevent the list from being too outdated.
Any suggestions on how to improve the code or UX are more than welcome!