Creates the built-in admin user with the given password. The username is always fixed to admin.
This endpoint can only be called from localhost (the same machine as the server). The password must satisfy the password policy: at least 12 characters, including uppercase, lowercase, digit, and special characters. The password must not be empty, only whitespace, or match the username.
Admin JWT obtained from the login endpoint.
Password for the admin user. Must satisfy the password policy.