1.1.0

Added

• Get-IcsDnsFailureDiagnostics - on a dead ICS DNS proxy, probes the
  two distinguishing host signals (SharedAccess service status + an
  upstream-side resolve via the host's own resolver) and returns the one
  fix that applies, instead of a checklist.
• Test-HostDnsReachable - resolves archive.ubuntu.com via the host's
  own configured resolver (no -Server), the upstream-side counterpart
  to Test-IcsDnsReachable. Distinguishes a wedged ICS proxy (host DNS
  works, proxy does not) from a dead host upstream (neither works), which
  need different fixes.

Changed

• Test-IcsDnsProxyReachable's terminal FAIL (proxy still unreachable
  after the one-shot Reset-IcsSharing) now folds
  Get-IcsDnsFailureDiagnostics output into the finding Detail, naming
  the next action (start service / fix host network / restart + reboot)
  rather than pointing the operator at a manual checklist. Signature and
  finding shape are unchanged, so callers need no update.