Real IP is 192.168.8.243 (not .214). Web UI is on port 8443 HTTPS,
not 8080. Caddy backend uses tls_insecure_skip_verify. boxCertAuth
disabled so ESP32 Toniebox connects without client cert extraction.
Added SD card onboarding steps for Leon's ESP32 box.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>