feat(settings): audio output device picker (labels, OS default, live refresh) (#173)

* feat(settings): clearer audio device labels for duplicate ALSA names

Show HDMI outputs as "Card (HDMI n)" from hdmi:DEV indices; include PCM and
optional subdevice for hw/plughw/sysdefault; label other ALSA plugins with
iface and PCM. When labels still collide, append a structured hint
(iface · card · PCM) instead of only truncating the raw device string.

* feat(settings): improve audio output device picker

Parse ALSA-style ids into clearer labels (HDMI with DEV index, PCM/subdevice
for hw/plughw/sysdefault). Disambiguate colliding labels; share stderr
suppression for Linux device enumeration.

Add audio_default_output_device_name and tag the matching list entry as the
current system output (i18n). While the Audio tab is open, refresh list and
mark on audio:device-changed and audio:device-reset without toggling the
refresh spinner. Show an error toast if listing devices fails.

src/locales/nb.ts

@@ -504,6 +504,8 @@ export const nbTranslation = {
     audioOutputDeviceDesc: 'Velg hvilken lydenhet Psysonic spiller gjennom. Endringer trer i kraft umiddelbart og starter gjeldende spor på nytt.',
     audioOutputDeviceDefault: 'Systemstandard',
     audioOutputDeviceRefresh: 'Oppdater enhetsliste',
+    audioOutputDeviceOsDefaultNow: 'gjeldende systemutgang',
+    audioOutputDeviceListError: 'Kunne ikke laste listen over lydenheter.',
     hiResTitle: 'Innebygd hi-res-avspilling',
     hiResEnabled: 'Aktiver innebygd hi-res-avspilling',
     hiResDesc: "Begrenser utdata til 44,1 kHz som standard for maksimal stabilitet. Aktiver kun hvis maskinvare og nettverk støtter høye samplingsrater (88,2 kHz+) pålitelig.",