Debug dongle test code

platformio.ini

@@ -0,0 +1,47 @@
+; PlatformIO Project Configuration File
+; ESP32 Debug Dongle - Web Serial Terminal with Bluetooth
+;
+; Build and upload:
+;   pio run -t upload
+;
+; Upload filesystem (LittleFS with web files):
+;   pio run -t uploadfs
+;
+; Monitor serial output:
+;   pio device monitor
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+monitor_filters = esp32_exception_decoder
+
+board_build.filesystem = littlefs
+
+; Use a larger app partition (pick ONE):
+board_build.partitions = huge_app.csv      ; 3MB app, 1MB FS, no OTA
+; board_build.partitions = no_ota.csv      ; 2MB app, 2MB FS, no OTA
+; board_build.partitions = min_spiffs.csv  ; 1.9MB app + OTA, 190KB FS
+
+build_flags =
+    -DCORE_DEBUG_LEVEL=3
+    -DCONFIG_BT_ENABLED=1
+    -DCONFIG_BLUEDROID_ENABLED=1
+
+; Libraries
+lib_deps =
+    ; Async Web Server and dependencies
+    https://github.com/ESP32Async/ESPAsyncWebServer
+    https://github.com/ESP32Async/AsyncTCP
+
+    ; ArduinoJson for configuration/commands
+    ArduinoJson
+
+; Upload settings (adjust port as needed)
+; upload_port = /dev/ttyUSB0
+; upload_speed = 921600
+
+; Extra scripts for LittleFS
+extra_scripts =
+    pre:scripts/download_xterm.py