fix(config): memoize detected_operator_cidr failure to avoid repeated probes

When all public IP probes fail (network down, DNS broken), detect_public_operator_cidr
raises HyperstackVM::Error. The old code did not cache this failure, so every
call to resolved_allowed_cidrs re-ran all probes, compounding slowness.

Add a rescue block in detected_operator_cidr that stores the exception in
@detected_operator_cidr_error and re-raises it. On subsequent calls the cached
error is re-raised immediately, preventing redundant probe retries.

0 files changed, 0 insertions, 0 deletions