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/screens/intro.dart

@@ -90,7 +90,7 @@ class _IntroScreenState extends State<IntroScreen> with WidgetsBindingObserver {
           ),
           const SizedBox(height: 4),
           const Text(
-            'REVOLT VPN',
+            'Revolt VPN',
             style: TextStyle(
               color: AppColors.textWhite,
               fontSize: 28,