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)

src/core/services/overlay-window.ts

@@ -15,6 +15,7 @@ import {
   type HyprlandPlacementStatus,
 } from './hyprland-window-placement';
 import { buildOverlayWindowOptions, OVERLAY_WINDOW_TITLES } from './overlay-window-options';
+import { isDockIconRetained } from './dock-icon-visibility';
 import { normalizeOverlayWindowBoundsForPlatform } from './overlay-window-bounds';
 import { OVERLAY_WINDOW_CONTENT_READY_FLAG } from './overlay-window-flags';
 export { OVERLAY_WINDOW_CONTENT_READY_FLAG } from './overlay-window-flags';
@@ -79,7 +80,12 @@ export function updateOverlayWindowBounds(
 export function ensureOverlayWindowLevel(window: BrowserWindow): void {
   if (process.platform === 'darwin') {
     window.setAlwaysOnTop(true, 'screen-saver', 1);
-    window.setVisibleOnAllWorkspaces(true, { visibleOnFullScreen: true });
+    // While a regular window (anime browser, ...) holds the Dock icon, skip the
+    // accessory process transform so the app stays in the Dock and Cmd+Tab.
+    window.setVisibleOnAllWorkspaces(true, {
+      visibleOnFullScreen: true,
+      skipTransformProcessType: isDockIconRetained(),
+    });
     window.setFullScreenable(false);
     window.moveTop();
     return;