fix(audio): device-reset false positive + stderr noise + i18n tooltip

- Device watcher requires 3 consecutive misses (~9 s) before triggering
  audio:device-reset, preventing false positives when ALSA temporarily
  hides a busy device from output_devices() enumeration
- Add stderr suppression to open_stream_for_device_and_rate (last source
  of ALSA terminal noise on Linux)
- Fix tooltip showing raw key 'common.refresh' — replaced with
  settings.audioOutputDeviceRefresh (added to all 8 locales)
- Device switch restarts track from beginning (no seek-back)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src-tauri/src/audio.rs

@@ -1530,6 +1530,20 @@ impl AudioCurrent {
 fn open_stream_for_device_and_rate(device_name: Option<&str>, desired_rate: u32) -> (rodio::OutputStream, rodio::OutputStreamHandle, u32) {
     use rodio::cpal::traits::{DeviceTrait, HostTrait};
 
+    // Suppress ALSA stderr noise while enumerating devices on Unix.
+    #[cfg(unix)]
+    let _guard = unsafe {
+        struct StderrGuard(i32);
+        impl Drop for StderrGuard {
+            fn drop(&mut self) { unsafe { libc::dup2(self.0, 2); libc::close(self.0); } }
+        }
+        let saved = libc::dup(2);
+        let devnull = libc::open(b"/dev/null\0".as_ptr() as *const libc::c_char, libc::O_WRONLY);
+        libc::dup2(devnull, 2);
+        libc::close(devnull);
+        StderrGuard(saved)
+    };
+
     let host = rodio::cpal::default_host();
 
     // Resolve the target device: named device first, fall back to system default.
@@ -2993,6 +3007,12 @@ pub fn start_device_watcher(engine: &AudioEngine, app: tauri::AppHandle) {
                 .and_then(|d| d.name().ok())
         }).await.unwrap_or(None);
 
+        // How many consecutive checks the pinned device has been absent.
+        // ALSA can temporarily fail to enumerate a device that is busy (e.g. actively
+        // streaming), so we require 3 consecutive misses (~9 s) before treating it
+        // as truly unplugged.
+        let mut pinned_miss_count: u32 = 0;
+
         loop {
             tokio::time::sleep(Duration::from_secs(3)).await;
 
@@ -3026,7 +3046,14 @@ pub fn start_device_watcher(engine: &AudioEngine, app: tauri::AppHandle) {
             if let Some(ref dev_name) = pinned {
                 // ── Case 2: pinned device disappeared ────────────────────────
                 if !available.iter().any(|d| d == dev_name) {
+                    pinned_miss_count += 1;
+                    // Only act after 3 consecutive misses (~9 s) to avoid false
+                    // positives when ALSA temporarily hides a busy device.
+                    if pinned_miss_count < 3 {
+                        continue;
+                    }
                     eprintln!("[psysonic] device-watcher: pinned device '{dev_name}' disconnected, falling back to system default");
+                    pinned_miss_count = 0;
                     *selected_device.lock().unwrap() = None;
 
                     // Debounce so the OS finishes reconfiguring.
@@ -3053,8 +3080,11 @@ pub fn start_device_watcher(engine: &AudioEngine, app: tauri::AppHandle) {
                     }
 
                     last_default = current_default;
+                } else {
+                    // Device is present — reset miss counter.
+                    pinned_miss_count = 0;
                 }
-                // Pinned device still present — nothing to do.
+                // Pinned device still present (or not yet confirmed gone) — nothing to do.
                 continue;
             }
 

src/App.tsx

@@ -421,13 +421,10 @@ function TauriEventBridge() {
   useEffect(() => {
     let unlisten: (() => void) | undefined;
     listen('audio:device-changed', () => {
-      const { currentTrack, currentTime, isPlaying, playTrack, resetAudioPause } = usePlayerStore.getState();
+      const { currentTrack, isPlaying, playTrack, resetAudioPause } = usePlayerStore.getState();
       if (!currentTrack) return;
       if (isPlaying) {
-        const pos = currentTime;
-        const dur = currentTrack.duration || 1;
         playTrack(currentTrack);
-        setTimeout(() => usePlayerStore.getState().seek(pos / dur), 600);
       } else {
         // Paused: clear warm-pause flag so the next resume uses the cold path
         // (audio_play + seek) which creates a new Sink on the new device.
@@ -446,10 +443,7 @@ function TauriEventBridge() {
       const { currentTrack, currentTime, isPlaying, playTrack, resetAudioPause } = usePlayerStore.getState();
       if (!currentTrack) return;
       if (isPlaying) {
-        const pos = currentTime;
-        const dur = currentTrack.duration || 1;
         playTrack(currentTrack);
-        setTimeout(() => usePlayerStore.getState().seek(pos / dur), 600);
       } else {
         resetAudioPause();
       }

src/locales/de.ts

@@ -502,6 +502,7 @@ export const deTranslation = {
     audioOutputDevice: 'Audio-Ausgabegerät',
     audioOutputDeviceDesc: 'Wähle das Audiogerät, über das Psysonic spielt. Änderungen werden sofort übernommen und starten den aktuellen Track neu.',
     audioOutputDeviceDefault: 'Systemstandard',
+    audioOutputDeviceRefresh: 'Geräteliste aktualisieren',
     hiResTitle: 'Native Hi-Res-Wiedergabe',
     hiResEnabled: 'Native Hi-Res-Wiedergabe aktivieren',
     hiResDesc: "Standardmäßig wird auf 44,1 kHz begrenzt (maximale Stabilität). Nur aktivieren, wenn Hardware und Netzwerk zuverlässig hohe Abtastraten (88,2 kHz+) unterstützen.",

src/locales/en.ts

@@ -504,6 +504,7 @@ export const enTranslation = {
     audioOutputDevice: 'Audio Output Device',
     audioOutputDeviceDesc: 'Select which audio device Psysonic plays through. Changes take effect immediately and restart the current track.',
     audioOutputDeviceDefault: 'System Default',
+    audioOutputDeviceRefresh: 'Refresh device list',
     hiResTitle: 'Native Hi-Res Playback',
     hiResEnabled: 'Enable native hi-res playback',
     hiResDesc: "Forces 44.1 kHz output by default for maximum stability. Enable only if your hardware and network reliably support high sample rates (88.2 kHz+).",

src/locales/es.ts

@@ -505,6 +505,7 @@ export const esTranslation = {
     audioOutputDevice: 'Dispositivo de salida de audio',
     audioOutputDeviceDesc: 'Selecciona el dispositivo de audio que usa Psysonic. Los cambios surten efecto de inmediato y reinician la pista actual.',
     audioOutputDeviceDefault: 'Predeterminado del sistema',
+    audioOutputDeviceRefresh: 'Actualizar lista de dispositivos',
     hiResTitle: 'Reproducción Nativa Hi-Res',
     hiResEnabled: 'Habilitar reproducción nativa hi-res',
     hiResDesc: "Fuerza 44.1 kHz de salida por defecto para máxima estabilidad. Habilita solo si tu hardware y red soportan confiablemente altas tasas de muestreo (88.2 kHz+).",

src/locales/fr.ts

@@ -502,6 +502,7 @@ export const frTranslation = {
     audioOutputDevice: 'Périphérique de sortie audio',
     audioOutputDeviceDesc: 'Choisissez le périphérique audio utilisé par Psysonic. Les changements sont immédiats et relancent la piste en cours.',
     audioOutputDeviceDefault: 'Défaut système',
+    audioOutputDeviceRefresh: 'Actualiser la liste',
     hiResTitle: 'Lecture haute résolution native',
     hiResEnabled: 'Activer la lecture haute résolution native',
     hiResDesc: "Force une sortie à 44,1 kHz par défaut pour une stabilité maximale. N'activer que si le matériel et le réseau prennent en charge les hautes fréquences d'échantillonnage (88,2 kHz+).",

src/locales/nb.ts

@@ -503,6 +503,7 @@ export const nbTranslation = {
     audioOutputDevice: 'Lydutgangsenhet',
     audioOutputDeviceDesc: 'Velg hvilken lydenhet Psysonic spiller gjennom. Endringer trer i kraft umiddelbart og starter gjeldende spor på nytt.',
     audioOutputDeviceDefault: 'Systemstandard',
+    audioOutputDeviceRefresh: 'Oppdater enhetsliste',
     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.",

src/locales/nl.ts

@@ -501,6 +501,7 @@ export const nlTranslation = {
     audioOutputDevice: 'Audio-uitvoerapparaat',
     audioOutputDeviceDesc: 'Kies via welk audioapparaat Psysonic afspeelt. Wijzigingen worden direct toegepast en starten het huidige nummer opnieuw.',
     audioOutputDeviceDefault: 'Systeemstandaard',
+    audioOutputDeviceRefresh: 'Apparatenlijst vernieuwen',
     hiResTitle: 'Natieve hi-res-weergave',
     hiResEnabled: 'Natieve hi-res-weergave inschakelen',
     hiResDesc: "Beperkt de uitvoer standaard tot 44,1 kHz voor maximale stabiliteit. Alleen inschakelen als hardware en netwerk hoge samplerates (88,2 kHz+) ondersteunen.",

src/locales/ru.ts

@@ -519,6 +519,7 @@ export const ruTranslation = {
     audioOutputDevice: 'Устройство вывода звука',
     audioOutputDeviceDesc: 'Выберите аудиоустройство для воспроизведения. Изменения применяются немедленно и перезапускают текущий трек.',
     audioOutputDeviceDefault: 'Системное по умолчанию',
+    audioOutputDeviceRefresh: 'Обновить список устройств',
     hiResTitle: 'Нативное воспроизведение Hi-Res',
     hiResEnabled: 'Включить нативное Hi-Res воспроизведение',
     hiResDesc: "По умолчанию вывод ограничен до 44,1 кГц для максимальной стабильности. Включайте только если оборудование и сеть надёжно поддерживают высокие частоты (88,2 кГц+).",

src/locales/zh.ts

@@ -497,6 +497,7 @@ export const zhTranslation = {
     audioOutputDevice: '音频输出设备',
     audioOutputDeviceDesc: '选择 Psysonic 播放音频的设备。更改立即生效并重新开始当前曲目。',
     audioOutputDeviceDefault: '系统默认',
+    audioOutputDeviceRefresh: '刷新设备列表',
     hiResTitle: '原生高清晰度播放',
     hiResEnabled: '启用原生高清晰度播放',
     hiResDesc: "默认强制 44.1 kHz 输出以获得最大稳定性。仅在硬件和网络可靠支持高采样率（88.2 kHz+）时启用。",

src/pages/Settings.tsx

@@ -559,7 +559,7 @@ export default function Settings() {
                   className="icon-btn"
                   onClick={refreshAudioDevices}
                   disabled={devicesLoading || deviceSwitching}
-                  data-tooltip={t('common.refresh')}
+                  data-tooltip={t('settings.audioOutputDeviceRefresh')}
                 >
                   <RotateCcw size={15} className={devicesLoading ? 'spin' : ''} />
                 </button>