Path B: legacy command read state.player.state.current_device() and
state.player.state.is_playing() — both methods already exist on the
qbz-player Player.state in the V2 architecture. No domain extraction
needed; the v2 command reads them via CoreBridge.player() like the
existing v2_get_hardware_audio_status does.
Adds v2_get_audio_output_status returning V2AudioOutputStatus
(serialized to the same {device_name, is_playing} shape so the
AudioOutputBadges frontend type is unchanged). Updates both
AudioOutputBadges call sites (initial loadStatus + the 1s polling
interval). The legacy command in commands/playback.rs is preserved
untouched.
cc
vicrodh
1abb57bd7f