fix: transport AppImage args via env and gate restart on app-ping

- Transport Linux AppImage CLI args through SUBMINER_APP_ARGC/ARG_* env vars instead of argv
- Add --app-ping command to probe single-instance lock ownership (exit 0 = running, 1 = not)
- Gate manual restart: poll app-ping until old app releases lock, then until new app owns it
- Preserve user-paused playback when disarming the auto-play-ready gate on restart
- Snapshot subtitles before connection side effects (sub-visibility hide) can suppress them
- Reapply overlay bounds after first show for Hyprland compatibility

src/core/services/overlay-window-options.ts

@@ -16,6 +16,7 @@ export function buildOverlayWindowOptions(
 ): BrowserWindowConstructorOptions {
   const showNativeDebugFrame = process.platform === 'win32' && options.isDev;
   const shouldStartAlwaysOnTop = !(process.platform === 'win32' && kind === 'visible');
+  const shouldAllowCompositorResize = process.platform === 'linux' && kind === 'visible';
 
   return {
     show: false,
@@ -29,7 +30,7 @@ export function buildOverlayWindowOptions(
     frame: false,
     alwaysOnTop: shouldStartAlwaysOnTop,
     skipTaskbar: true,
-    resizable: false,
+    resizable: shouldAllowCompositorResize,
     hasShadow: false,
     focusable: true,
     acceptFirstMouse: true,