Sniffs ArtNet packets on UDP port 6454 and validates against the Art-Net 4 spec.
Currently validates ArtPoll and ArtPollReply packets.
Features:
- Structured logging with slog
- Name filter regex (-name flag)
- Verbose mode (-v flag)
- Universe display as net:subnet:universe (portaddr)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
