setup.py --check only validated token shape/expiry but did not detect
when Google had disabled the OAuth client or account. Users got
AUTHENTICATED even when actual API calls failed with disabled_client.
Changes:
- Catch disabled_client and invalid_client in check_auth() refresh
path with actionable guidance (check Cloud Console, check account
status, do not retry)
- Add check_auth_live() that performs a real Calendar API call to
detect disabled_client errors that survive token refresh
- Add --check-live CLI flag backed by check_auth_live()
Fixes#19570
5fa493a2ca