Delete My Account

Deletes the authenticated admin's own account after re-confirming their password — the API equivalent of the "delete my account" action on the admin profile.

• Requires the caller's current password. A missing or incorrect password returns 422.
• Refuses to delete the last remaining admin (400).
• This is distinct from Delete User (DELETE /settings/users/{id}), which deletes another admin and always refuses self-deletion.
• Deleting the account also invalidates the token that owns it.

No additional permission is required beyond authentication — the password confirmation is the gate.