Adding firmware which was tested using microReticulum as a sub modules only, **not** microReticulum_Firmware. Preserving the fieldtest_beacon for posterity even though it will be modified to utilize microReticulm_Firmware going forward."

firmware/fieldtest_beacon/platformio.ini

@@ -0,0 +1,22 @@
+; platformio.ini
+; 20260212 ChatGPT
+; $Id$
+; $HeadURL$
+
+[platformio]
+default_envs = tbeam_supreme
+
+[env:tbeam_supreme]
+platform = espressif32
+framework = arduino
+board = esp32-s3-devkitc-1          ; <-- change to your exact board if needed
+monitor_speed = 115200
+
+; Pull in microReticulum from your repo tree
+build_flags =
+  -I ../../external/microReticulum/src
+  -D FIELDTEST_BEACON=1
+
+lib_deps =
+  ; SD stack usually comes with Arduino core
+  ; Add your LoRa radio library here (RadioLib, SX126x-Arduino, etc.)