feat(server): capability framework, AudioMuse sonic routing & PsyLab Connections (#1033)

* feat(server): probe AudioMuse via OpenSubsonic and add PsyLab Connections tab

Navidrome ≥0.62: detect sonicSimilarity extension for reliable plugin signal;
older servers keep the legacy getSimilarSongs probe. PsyLab gets a Connections
tab with session, endpoint, and active-server capability details.

* feat(psylab): polish Connections tab, admin role probe, and tab bar layout

Status badges and Navidrome admin/user validation in Connections; prevent
PsyLab tab row from vertically collapsing under the Logs flex layout.

* docs: add CHANGELOG and credits for PR #1032

* feat(settings): auto-enable AudioMuse on Navidrome 0.62+ with status indicator

Replace the per-server manual toggle with a probe-driven badge when
sonicSimilarity is available; pre-0.62 Navidrome keeps the legacy toggle.

* feat(server): capability framework with AudioMuse sonic routing

Add a declarative server-capability catalog (src/serverCapabilities/) that
picks a feature strategy per server generation, runs only the needed probes,
and routes API calls. AudioMuse Instant Mix now prefers the OpenSubsonic
sonicSimilarity endpoint (getSonicSimilarTracks) on Navidrome 0.62+ and
falls back to legacy getSimilarSongs.

- catalog/context/resolve: eligibility, detection, activation, call routing
- storeView: read facade over the existing per-server probe maps
- getSonicSimilarTracks API client + fetchSimilarTracksRouted router
- route Instant Mix and Lucky Mix through the resolver
- ServersTab + PsyLab Connections read the resolver (auto status vs toggle)
- tests: resolve, storeView, router

* docs: update CHANGELOG and credits for PR #1033

Renamed branch supersedes PR #1032: point changelog/credits at #1033 and
document the server-capability framework, auto-managed AudioMuse indicator,
and sonic Instant Mix routing.

* refactor(server): address PR #1033 review — idempotent probe, drop dead code

- Make scheduleInstantMixProbeForServer idempotent: skip when a definitive
  result is cached; re-probe only on force (add/edit/test server), a prior
  error, or a server version/type change (invalidated in setSubsonicServerIdentity).
  Removes the steady-state 120 s re-probe, the present→probing→present flicker,
  and the momentary legacy-fallback routing window.
- Remove now-dead identity helpers (showAudiomuseNavidromeServerSetting,
  isAudiomusePluginAutoManaged, isNavidromeSonicSimilarityEligible,
  resolveAudiomusePluginProbeUiStatus + type) and the superseded
  probeAudiomusePluginWithCredentials; the catalog is the single source of truth.
- Drop the never-emitted 'unsupported' AudiomusePluginProbeResult variant.
- Fill audiomuseStatus* keys in all 8 non-en locales.
- Tests: probe idempotency + version-change invalidation; retarget
  OpenSubsonic test to fetchOpenSubsonicExtensionsWithCredentials.

src/locales/de/settings.ts

@@ -106,6 +106,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Subsonic-Passwort für „{{username}}" eingeben — es wird in den kopierten Magic-String übernommen.',
   userMgmtMagicStringModalConfirm: 'String kopieren',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Aktiv',
+  audiomuseStatusChecking: 'Wird geprüft…',
+  audiomuseStatusNotDetected: 'Nicht erkannt',
+  audiomuseStatusProbeFailed: 'Prüfung fehlgeschlagen',
   audiomuseDesc:
     'Aktivieren, wenn dieser Server das <pluginLink>AudioMuse-AI-Navidrome-Plugin</pluginLink> nutzt. Schaltet Instant Mix pro Titel frei und nutzt ähnliche Künstler vom Server statt Last.fm auf Künstlerseiten.',
   audiomuseIssueHint:

src/locales/en/settings.ts

@@ -108,6 +108,10 @@ export const settings = {
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
   audiomuseDesc:
     'Turn on if this server has the <pluginLink>AudioMuse-AI Navidrome plugin</pluginLink> configured. Enables Instant Mix from tracks and uses server-side similar artists instead of Last.fm on artist pages.',
+  audiomuseStatusActive: 'Active',
+  audiomuseStatusChecking: 'Checking…',
+  audiomuseStatusNotDetected: 'Not detected',
+  audiomuseStatusProbeFailed: 'Probe failed',
   audiomuseIssueHint:
     'Instant Mix failed recently — check the Navidrome plugin and AudioMuse API. Similar artists fall back to Last.fm when the server returns none.',
   connected: 'Connected',

src/locales/es/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Introduce la contraseña Subsonic de «{{username}}». Se incluirá en la cadena mágica copiada.',
   userMgmtMagicStringModalConfirm: 'Copiar cadena',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Activo',
+  audiomuseStatusChecking: 'Comprobando…',
+  audiomuseStatusNotDetected: 'No detectado',
+  audiomuseStatusProbeFailed: 'Error de comprobación',
   audiomuseDesc:
     'Activa si este servidor tiene el plugin <pluginLink>AudioMuse-AI Navidrome</pluginLink> configurado. Habilita Mezcla Instantánea desde pistas y usa artistas similares del servidor en lugar de Last.fm en páginas de artistas.',
   audiomuseIssueHint:

src/locales/fr/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Saisissez le mot de passe Subsonic de « {{username}} ». Il est inclus dans la chaîne magique copiée.',
   userMgmtMagicStringModalConfirm: 'Copier la chaîne',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Actif',
+  audiomuseStatusChecking: 'Vérification…',
+  audiomuseStatusNotDetected: 'Non détecté',
+  audiomuseStatusProbeFailed: 'Échec de la détection',
   audiomuseDesc:
     'Activez si ce serveur utilise le <pluginLink>plugin Navidrome AudioMuse-AI</pluginLink>. Active le mix instantané depuis un morceau et affiche les artistes similaires côté serveur au lieu de Last.fm sur les pages artiste.',
   audiomuseIssueHint:

src/locales/nb/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Skriv inn Subsonic-passordet for «{{username}}». Det tas med i den kopierte magic string-en.',
   userMgmtMagicStringModalConfirm: 'Kopier streng',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Aktiv',
+  audiomuseStatusChecking: 'Sjekker…',
+  audiomuseStatusNotDetected: 'Ikke oppdaget',
+  audiomuseStatusProbeFailed: 'Sjekk mislyktes',
   audiomuseDesc:
     'Slå på hvis denne serveren bruker <pluginLink>AudioMuse-AI Navidrome-plugin</pluginLink>. Aktiverer Instant Mix fra spor og henter lignende artister fra serveren i stedet for Last.fm på artistsider.',
   audiomuseIssueHint:

src/locales/nl/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Voer het Subsonic-wachtwoord voor „{{username}}" in. Het wordt opgenomen in de gekopieerde magic string.',
   userMgmtMagicStringModalConfirm: 'String kopiëren',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Actief',
+  audiomuseStatusChecking: 'Controleren…',
+  audiomuseStatusNotDetected: 'Niet gedetecteerd',
+  audiomuseStatusProbeFailed: 'Detectie mislukt',
   audiomuseDesc:
     'Zet aan als deze server de <pluginLink>AudioMuse-AI Navidrome-plugin</pluginLink> gebruikt. Schakelt Instant Mix per nummer in en toont vergelijkbare artiesten van de server i.p.v. Last.fm op artiestpagina’s.',
   audiomuseIssueHint:

src/locales/ro/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Introdu parola Subsonic pentru "{{username}}". Este inclusă în string-ul magic copiat.',
   userMgmtMagicStringModalConfirm: 'Copiază string-ul',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Activ',
+  audiomuseStatusChecking: 'Se verifică…',
+  audiomuseStatusNotDetected: 'Nedetectat',
+  audiomuseStatusProbeFailed: 'Verificare eșuată',
   audiomuseDesc:
     'Pornește dacă acest server are <pluginLink>AudioMuse-AI Navidrome plugin</pluginLink> configurat. Activează Mixul Instant din piese si folosește artiști similari de pe partea de server în loc de Last.fm pe paginile de artiști.',
   audiomuseIssueHint:

src/locales/ru/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: 'Введите пароль Subsonic для «{{username}}» — он попадёт в копируемую magic string.',
   userMgmtMagicStringModalConfirm: 'Скопировать строку',
   audiomuseTitle: 'AudioMuse-AI (Navidrome)',
+  audiomuseStatusActive: 'Активно',
+  audiomuseStatusChecking: 'Проверка…',
+  audiomuseStatusNotDetected: 'Не обнаружено',
+  audiomuseStatusProbeFailed: 'Ошибка проверки',
   audiomuseDesc:
     'Включите, если на этом сервере настроен <pluginLink>плагин AudioMuse-AI для Navidrome</pluginLink>. Появится Instant Mix для треков, а на странице исполнителя похожие будут браться с сервера вместо Last.fm.',
   audiomuseIssueHint:

src/locales/zh/settings.ts

@@ -105,6 +105,10 @@ export const settings = {
   userMgmtMagicStringModalDesc: '请输入用户「{{username}}」的 Subsonic 密码，它会包含在复制的魔法字符串中。',
   userMgmtMagicStringModalConfirm: '复制字符串',
   audiomuseTitle: 'AudioMuse-AI（Navidrome）',
+  audiomuseStatusActive: '已启用',
+  audiomuseStatusChecking: '检测中…',
+  audiomuseStatusNotDetected: '未检测到',
+  audiomuseStatusProbeFailed: '检测失败',
   audiomuseDesc:
     '若此服务器已配置 <pluginLink>AudioMuse-AI Navidrome 插件</pluginLink>请开启。可从曲目启动即时混音，并在艺人页使用服务器返回的相似艺人，而非 Last.fm。',
   audiomuseIssueHint: