feat(station-g1): initial support for station g1

[gordol]

it boots, and is configurable over usb/radio

it's screaming about i2c issues in the console (likely no rtc, or gps pins are wrong or something?)

more to come... (any help would be appreciated)

[robekl]

• possible invalid BLE_PIN_CODE numeric literal

  • variants/station_g1/platformio.ini:222
  • -D BLE_PIN_CODE=022288 is invalid in C/C++ (0 prefix => octal, octal cannot contain 8), so Station_G1_companion_radio_ble fails where BLE_PIN_CODE is used numerically (e.g. examples/companion_radio/MyMesh.cpp:846).

• Potential radio init/reliability mismatch for E22/SX1262 configuration

  • variants/station_g1/platformio.ini:25-29
  • G1 sets SX126X_DIO2_AS_RF_SWITCH=true but omits SX126X_DIO3_TCXO_VOLTAGE and SX126X_CURRENT_LIMIT; CustomSX1262 then defaults TCXO to 1.6V (src/helpers/radiolib/CustomSX1262.h:18-22). Existing E22/SX1262 variants in this repo commonly set 1.8V + current limit explicitly.

• Battery percentage UI likely inaccurate for Station G1 voltage domain

  • variants/station_g1/StationG1Board.h:73-82
  • examples/companion_radio/ui-new/UITask.cpp:106-110
  • examples/companion_radio/ui-orig/UITask.cpp:152-156
  • G1 returns scaled pack voltage (multi-cell range), but UI percent conversion is hardcoded to 3000-4200mV, likely pinning display near full and reducing telemetry usefulness.

• Global RadioLib debug enabled for all Station G1 builds

  • boards/station-g1.json:7-9
  • Forces -D RADIOLIB_DEBUG=1 in board definition, adding debug overhead/noise in production artifacts.