- main.cpp: setup() initializes strips, shows green (connecting) then white (connected)
- esp_wifi_set_ps(WIFI_PS_NONE) called immediately after WiFi connects for RMT coexistence
- loop() toggles LED colors every 5s to confirm strip responsiveness
- Coexistence test procedure documented as comment block in main.cpp
- firmware/.gitignore excludes .pio/ and credentials.h