v3.2.0 — DPI hardening, notification consolidation, disconnect refactor

User-Agent spoofed to Chrome on Android (was Dart/3.x). Domain renamed to userevolt.app. Branding to Revolt VPN. Removed duplicate notification, patched flutter_vless for custom icon + dark background. Merged 5 disconnect paths into single idempotent gate, fixed stopVless timeout silently lying about state. Removed kDebugMode guard from AdMob bypass.

lib/components/connect_button.dart

@@ -64,8 +64,7 @@ class _ConnectButtonState extends State<ConnectButton>
 
     if (vpn.status == VpnStatus.connected || vpn.status == VpnStatus.connecting) {
       _busy = false;
-      timer.stop();
-      await vpn.disconnect();
+      await timer.disconnect();
       if (hapticEnabled) HapticFeedback.lightImpact();
       return;
     }