Not handling millis() rollovers

[jgstroud]

The code is so stable now that my millis() counter actually rolled rover.
https://docs.arduino.cc/language-reference/en/functions/time/millis/

My uptime had mysteriously gone back to 0, which originally I thought there must have been a power flicker. But there was nothing in the logs. Then today I clicked the wall button and the device went into recovery mode after a single press. I went back and reviewed my syslog logs and see that the counter reset timeout value was set before the rollover.