Impersonation borrows the customer's portal session; this is access to their
installation, which is a different thing and now a different button.
Nextcloud has no passwordless admin jump, so this does the only honest thing it
offers: it resets OUR managed admin account inside that installation and hands
the credentials over once. The customer's own accounts are untouched, and the
next request sets a new password again.
- New capability instances.adminlogin, Owner and Admin only — stronger than
impersonation, because it hands over control rather than a session.
- The operator's own password is required every time, rate-limited: taking over
a customer's installation is not something an unattended browser should manage
on its own.
- The reset runs on the provisioning worker (it owns the tunnel and the Proxmox
credentials); the console polls a handoff token, so the credentials never
enter a Livewire snapshot.
- A silent instance is reported as such instead of appearing to succeed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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