* Add ESP32 Power Management lessons learned document
Documents our experimentation with ESP-IDF DFS and why it doesn't
work well for Meshtastic (RTOS locks, BLE locks, USB issues).
Proposes simpler alternative: manual setCpuFrequencyMhz() control
with explicit triggers for when to go fast vs slow.
* Added a lambda function to clear startup output in the MQTT unit test to ensure a clean state before and after the MQTT subscription process.
Clive BlackledgeandGitHub
8093e2ed5a