@spec attach_default_logger(keyword()) :: :ok | {:error, :already_exists}

Attaches the default logger to thread telemetry events.

@spec configure(keyword()) :: :ok

Configures OpenTelemetry exporting if the required environment variables are present.

Reads CODEX_OTLP_ENDPOINT and optional CODEX_OTLP_HEADERS from the provided :env map (defaults to System.get_env/0) and wires the exporter when set.

@spec emit(telemetry_event(), map(), map()) :: :ok

Emits a telemetry event with the given measurements and metadata.

@spec realtime_audio_receive(map()) :: :ok

Emits telemetry for realtime audio receive events.

@spec realtime_audio_send(map()) :: :ok

Emits telemetry for realtime audio send events.

@spec realtime_session_start(map()) :: :ok

Emits telemetry for realtime session start.

@spec realtime_session_stop(map(), map()) :: :ok

Emits telemetry for realtime session stop.

@spec voice_pipeline_start(map()) :: :ok

Emits telemetry for voice pipeline start.

@spec voice_pipeline_stop(map(), map()) :: :ok

Emits telemetry for voice pipeline stop.

@spec voice_synthesis_start(map()) :: :ok

Emits telemetry for voice synthesis start.

@spec voice_synthesis_stop(map(), map()) :: :ok

Emits telemetry for voice synthesis stop.

@spec voice_transcription_start(map()) :: :ok

Emits telemetry for voice transcription start.

@spec voice_transcription_stop(map(), map()) :: :ok

Emits telemetry for voice transcription stop.