- Removed dns-updater Docker sidecar (curl not available in alpine)
- scripts/start-voip.sh: updates DNS then docker compose up
- update-dns.sh: supports --once flag, runs locally with curl
- All CF API calls forced to IPv4 (-4 flag)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
