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/main-entry.ts

@@ -13,6 +13,7 @@ import {
   sanitizeBackgroundEnv,
   sanitizeHelpEnv,
   sanitizeLaunchMpvEnv,
+  hasTransportedStartupArgs,
   shouldDetachBackgroundLaunch,
   shouldHandleHelpOnlyAtEntry,
   shouldHandleLaunchMpvAtEntry,
@@ -175,7 +176,8 @@ applySanitizedEnv(sanitizeStartupEnv(process.env));
 const userDataPath = configureEarlyAppPaths(app);
 
 if (shouldDetachBackgroundLaunch(process.argv, process.env)) {
-  const child = spawn(process.execPath, process.argv.slice(1), {
+  const childArgs = hasTransportedStartupArgs(process.env) ? [] : process.argv.slice(1);
+  const child = spawn(process.execPath, childArgs, {
     detached: true,
     stdio: 'ignore',
     env: sanitizeBackgroundEnv(process.env),