This works for all public GitHub repos and borrows your gh CLI token for private ones.
Install (macOS 14+, Xcode CLT, `gh auth login`):
curl -fsSL https://raw.githubusercontent.com/sburl/prBar/main/install.sh | bash
You pick the repos (add/remove/reorder). Dependabot PRs are listed under their own header. Refresh defaults to 2 minutes.