# Live Captions

ESP32-S3 external app that streams 16 kHz signed-16-bit mono microphone PCM to the Mac mini Hermes voice gateway and renders its live draft/final captions. It stores **only final captions** on the device SD card in `/sdcard/captions/YYYY-MM-DD.txt`.

## Configuration

Before packaging, place `config.json` in the app's user-data directory (not source control):

```json
{
  "server_url": "ws://192.168.68.102:8642/api/esp32/voice/ws",
  "device_id": "your-registered-device-id",
  "api_key": "device-profile-key"
}
```

The app never retries automatically: connection failure remains `FAILED` until the user selects **Start** again. **Stop** sends the gateway `stop` event, waits for the final caption, appends it to that day’s text file, then returns to idle.