First public release.
Firmware: flash firmware/ to a Heltec WiFi LoRa 32 V3 with PlatformIO (pio run -e node -t upload). Same binary for every board — roles are configured in the app.
App: download SynapseLink.apk below (Android 8+, allow installs from unknown sources), then scan and configure your boards over Bluetooth.
See the README for the full setup walkthrough.