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/commands/command-modules.test.ts

@@ -207,6 +207,7 @@ test('app command starts default macOS background app detached from launcher', (
       calls.push('attached');
     },
     launchSyncUiDetached: () => calls.push('sync-ui'),
+    launchAnimeBrowserDetached: () => {},
     launchAppBackgroundDetached: (appPath, logLevel) => {
       calls.push(`detached:${appPath}:${logLevel}`);
     },
@@ -227,6 +228,7 @@ test('app command starts default Linux background app detached from launcher', (
       calls.push('attached');
     },
     launchSyncUiDetached: () => calls.push('sync-ui'),
+    launchAnimeBrowserDetached: () => {},
     launchAppBackgroundDetached: (appPath, logLevel) => {
       calls.push(`detached:${appPath}:${logLevel}`);
     },
@@ -248,6 +250,7 @@ test('app command keeps explicit passthrough args attached', () => {
       forwarded.push(appArgs);
     },
     launchSyncUiDetached: () => detached.push('sync-ui'),
+    launchAnimeBrowserDetached: () => {},
     launchAppBackgroundDetached: () => {
       detached.push('detached');
     },
@@ -266,6 +269,7 @@ test('sync UI command launches the app detached from the terminal', () => {
   const handled = runAppPassthroughCommand(context, {
     runAppCommandWithInherit: () => calls.push('piped'),
     launchSyncUiDetached: (appPath, logLevel) => calls.push(`sync-ui:${appPath}:${logLevel}`),
+    launchAnimeBrowserDetached: () => calls.push('anime'),
     launchAppBackgroundDetached: () => calls.push('detached'),
   });