No boards connected

Power on a board flashed with the latest firmware and confirm it can reach mqtt.greg.tech.

1. Pull main and reflash — see START-HERE.md in the repo
2. Confirm MQTT host mqtt.greg.tech and TLS CA cert
3. Your board appears in the selector below when live

Expecting data now? Check HaLow link, MQTT credentials, and device ID (HALOW-ALS-001 / 002).