An access created without storing its config had no download button and no
explanation — it looked broken. It now shows a dimmed button that says why
(the private key only exists on your device), and every staff access gets
"Re-issue": a new keypair, old key off the hub before the new one goes on,
so two peers never claim the same tunnel address at once. A stored config is
re-encrypted in step, or the owner would download a key the hub no longer
accepts.
Host peers are excluded: their key belongs to the machine's own wg0, and
swapping it here would cut the host off with nothing left to repair it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>