The previous README used 'adcli precreate' (doesn't exist — the real
command is 'preset-computer') and several non-existent options
(--computer-name on preset, --login-type, administrator@AZ-GROUP as
positional). Caught by user running the commands against real adcli.
Corrected workflow:
- preset-computer takes host FQDN as positional, options are --domain,
--domain-ou, --os-name, --os-version, --login-user
- join uses --host-fqdn to redirect from local machine to target
computer object, -K writes only to specified path (does NOT modify
local /etc/krb5.keytab)
- Added klist verification step for the resulting keytab
- Added prereq note that the OU must exist in AD
- Added TGT-based auth alternative