Only care about TLS handshake success for certificate monitoring.
Services like nzbget (401) and ha (400) return non-2xx but have
valid certificates.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
The rules were already added to rules.yml but the blackbox.nix file
still had them, causing duplicate 'groups' key errors.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>