feat(anime): add anime browser powered by Aniyomi extensions

- Add `subminer anime` / `--anime` and a tray entry to open a browser that searches installed Aniyomi extension sources, shows cover art and episodes, and plays into mpv with overlay/mining attached
- Add an Extensions tab to add repos and install/update/remove sources, and per-source settings for sources needing config
- Support searching all sources at once with streaming, per-source results and status
- Prefer Japanese audio/subtitle tracks from the source and keep the primary subtitle slot reserved for Japanese
- Fix window/tray/Dock handling so the browser and mpv can be switched between without quitting the app or losing the Dock icon
- Add anime.repos, anime.extensionsDir, anime.preferredQuality config keys (no bundled repos or discovery)

launcher/config/args-normalizer.test.ts

@@ -120,6 +120,7 @@ test('applyInvocationsToArgs maps config and jellyfin invocation state', () => {
       logLevel: 'warn',
     },
     settingsInvocation: null,
+    animeInvocation: null,
     mpvInvocation: null,
     appInvocation: null,
     dictionaryTriggered: false,
@@ -174,6 +175,7 @@ test('applyInvocationsToArgs maps settings invocation to settings window', () =>
     settingsInvocation: {
       logLevel: undefined,
     },
+    animeInvocation: null,
     mpvInvocation: null,
     appInvocation: null,
     dictionaryTriggered: false,
@@ -221,6 +223,7 @@ test('applyInvocationsToArgs fails when config invocation has no action', () =>
         action: undefined,
       },
       settingsInvocation: null,
+      animeInvocation: null,
       mpvInvocation: null,
       appInvocation: null,
       dictionaryTriggered: false,
@@ -266,6 +269,7 @@ test('applyInvocationsToArgs maps texthooker browser-open request', () => {
     jellyfinInvocation: null,
     configInvocation: null,
     settingsInvocation: null,
+    animeInvocation: null,
     mpvInvocation: null,
     appInvocation: null,
     dictionaryTriggered: false,