playAudio
abstract suspend fun playAudio(source: AudioSource, options: PlayAudioOptions = PlayAudioOptions()): Result<Unit>
Play audio on the glasses.
AudioSource.Tts: text → on-device TTS. Requires DeviceCapabilities.canPlayTts.
AudioSource.RawBytes: encoded/PCM bytes → direct playback. Requires DeviceCapabilities.canPlayAudioBytes.
Returns GlassesError.Unsupported when the device does not support the requested source type.