Update __main__.py

New CLI helpers

    Added support for:

    script/run --list-input-devices
    script/run --list-output-devices

    These code paths:

        Initialize just enough of the audio stack to enumerate devices.

        Print a clean, human-readable list of input/output devices (including PipeWire / PulseAudio virtual devices like Echo-Cancel Source and pipewire/echo-cancel-sink).

        Exit cleanly with status 0 instead of trying to start the full LVA process afterward (fixing the previous CalledProcessError when --list-output-devices was used).

Behavior change

    __main__.py now treats the “list devices” modes as early-exit utility modes, not “run LVA and then also print devices”.

    This makes it practical to use these commands in setup docs and shell scripts.

linux_voice_assistant/__main__.py

@@ -171,13 +171,16 @@ def _init_basics() -> Tuple[Config, asyncio.AbstractEventLoop, EventBus]:
 
     if args.list_output_devices:
         print("Output devices\n" + "=" * 14)
+        exit_code = 0
         try:
             player = MpvMediaPlayer(loop=None)
             for speaker in player.player.audio_device_list:
                 print(speaker["name"] + ":", speaker["description"])
         except Exception as e:
             _LOGGER.error("Failed to list output devices: %s", e)
-        sys.exit(1)
+            exit_code = 1
+
+        sys.exit(exit_code)
 
     config_path = args.config
     if not config_path.is_absolute():