refactor(app): remove unsupported runtime and UI state

lib/components/connect_button.dart

@@ -19,6 +19,7 @@ class _ConnectButtonState extends State<ConnectButton>
   DateTime _lastTap = DateTime.fromMillisecondsSinceEpoch(0);
   AnimationController? _pulse;
   Animation<double>? _pulseAnim;
+  VpnConnection? _vpn;
 
   double get _pulseValue => _pulseAnim?.value ?? 0.0;
 
@@ -35,20 +36,25 @@ class _ConnectButtonState extends State<ConnectButton>
     );
     WidgetsBinding.instance.addObserver(this);
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      if (mounted) context.read<VpnConnection>().addListener(_onVpnChanged);
+      if (!mounted || _vpn != null) return;
+      final vpn = context.read<VpnConnection>();
+      _vpn = vpn;
+      vpn.addListener(_onVpnChanged);
+      _onVpnChanged();
     });
   }
 
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
-    context.read<VpnConnection>().removeListener(_onVpnChanged);
+    _vpn?.removeListener(_onVpnChanged);
     _pulse?.dispose();
     super.dispose();
   }
 
   void _onVpnChanged() {
-    final vpn = context.read<VpnConnection>();
+    final vpn = _vpn;
+    if (vpn == null) return;
     if (vpn.status == VpnStatus.connected) {
       _pulse?.repeat(reverse: true);
     } else {
@@ -60,14 +66,12 @@ class _ConnectButtonState extends State<ConnectButton>
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     if (!mounted) return;
-    if (state == AppLifecycleState.paused ||
+    if (state != AppLifecycleState.resumed) {
-        state == AppLifecycleState.detached) {
       _pulse?.stop();
-    } else if (state == AppLifecycleState.resumed) {
+      return;
-      final vpn = context.read<VpnConnection>();
-      if (vpn.status == VpnStatus.connected) {
-        _pulse?.repeat(reverse: true);
     }
+    if (_vpn?.status == VpnStatus.connected) {
+      _pulse?.repeat(reverse: true);
     }
   }
 

lib/components/data_disclosure_dialog.dart

@@ -19,23 +19,28 @@ class DataDisclosureDialog {
 
     if (!context.mounted) return;
 
-    await showDialog(
+    final accepted = await showDialog<bool>(
       context: context,
       barrierDismissible: false, // Must tap Continue — no tap-outside dismiss.
-      builder: (_) => _DisclosureDialog(
+      builder: (_) => const _DisclosureDialog(),
-        onContinue: () {
-          prefs.setBool(_key, true);
-          Navigator.of(context).pop(); // Dismiss the dialog.
-        },
-      ),
     );
+    if (accepted != true) return;
+
+    // Persist only after the user action is complete. If storage fails, do not
+    // invent an accepted state; the disclosure will simply reappear later.
+    try {
+      final saved = await prefs.setBool(_key, true);
+      if (!saved) {
+        debugPrint('[Disclosure] Preference write was rejected');
+      }
+    } catch (e) {
+      debugPrint('[Disclosure] Failed to persist acknowledgement: $e');
+    }
   }
 }
 
 class _DisclosureDialog extends StatelessWidget {
-  final VoidCallback onContinue;
+  const _DisclosureDialog();
-
-  const _DisclosureDialog({required this.onContinue});
 
   @override
   Widget build(BuildContext context) {
@@ -49,7 +54,6 @@ class _DisclosureDialog extends StatelessWidget {
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            // Title
             const Text(
               'Before you connect',
               style: TextStyle(
@@ -59,8 +63,6 @@ class _DisclosureDialog extends StatelessWidget {
               ),
             ),
             const SizedBox(height: 16),
-
-            // Body
             const Text(
               'Revolt VPN creates a secure VPN tunnel to protect your '
               'traffic. To enforce your data/time quota, we log your '
@@ -76,12 +78,10 @@ class _DisclosureDialog extends StatelessWidget {
               ),
             ),
             const SizedBox(height: 24),
-
-            // Continue button — full-width, accent
             SizedBox(
               width: double.infinity,
               child: ElevatedButton(
-                onPressed: onContinue,
+                onPressed: () => Navigator.of(context).pop(true),
                 style: ElevatedButton.styleFrom(
                   backgroundColor: AppColors.accent,
                   foregroundColor: AppColors.bgDeep,

lib/components/lightning.dart

@@ -5,13 +5,9 @@ import 'package:revoltvpn/logic/app_colors.dart';
 import 'package:revoltvpn/screens/settings/in_settings/lightning.dart';
 
 /// 2D lightning bolt — a jagged yellow line from top to bottom with glow.
-
 class LightningEffect extends StatefulWidget {
-
   final int minIntervalSec;
-
   final int maxIntervalSec;
-
   final double doubleChance;
 
   const LightningEffect({
@@ -26,26 +22,49 @@ class LightningEffect extends StatefulWidget {
 }
 
 class _LightningEffectState extends State<LightningEffect>
-    with SingleTickerProviderStateMixin {
+    with SingleTickerProviderStateMixin, WidgetsBindingObserver {
   late final AnimationController _ctrl;
   Timer? _timer;
   final _random = Random();
+  bool _appActive = true;
 
   LightningBolt? _bolt;
 
   @override
   void initState() {
     super.initState();
-    _ctrl = AnimationController(vsync: this, duration: const Duration(milliseconds: 400));
+    _ctrl = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 400),
+    );
+    WidgetsBinding.instance.addObserver(this);
+    final lifecycle = WidgetsBinding.instance.lifecycleState;
+    _appActive = lifecycle == null || lifecycle == AppLifecycleState.resumed;
     lightningEnabled.addListener(_onEnabledChanged);
+    if (_appActive && lightningEnabled.value) _scheduleNext();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    _appActive = state == AppLifecycleState.resumed;
+    if (!_appActive) {
+      _timer?.cancel();
+      _timer = null;
+      _ctrl.stop();
+      _bolt = null;
+      if (mounted) setState(() {});
+      return;
+    }
+
     if (lightningEnabled.value) _scheduleNext();
   }
 
   void _onEnabledChanged() {
-    if (lightningEnabled.value) {
+    if (lightningEnabled.value && _appActive) {
       _scheduleNext();
     } else {
       _timer?.cancel();
+      _timer = null;
       _ctrl.stop();
       _bolt = null;
     }
@@ -54,6 +73,7 @@ class _LightningEffectState extends State<LightningEffect>
 
   @override
   void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
     lightningEnabled.removeListener(_onEnabledChanged);
     _timer?.cancel();
     _ctrl.dispose();
@@ -61,19 +81,23 @@ class _LightningEffectState extends State<LightningEffect>
   }
 
   void _scheduleNext() {
+    _timer?.cancel();
+    if (!mounted || !_appActive || !lightningEnabled.value) return;
+
     final secs = widget.minIntervalSec +
         _random.nextInt(widget.maxIntervalSec - widget.minIntervalSec + 1);
     _timer = Timer(Duration(seconds: secs), _strike);
   }
 
   void _strike() {
-    if (!mounted || !lightningEnabled.value) return;
+    _timer = null;
+    if (!mounted || !_appActive || !lightningEnabled.value) return;
     _bolt = LightningBolt.random(_random);
     _ctrl.forward(from: 0.0);
 
     if (_random.nextDouble() < widget.doubleChance) {
       Future.delayed(const Duration(milliseconds: 120), () {
-        if (mounted && lightningEnabled.value) {
+        if (mounted && _appActive && lightningEnabled.value) {
           _bolt = LightningBolt.random(_random);
           _ctrl.forward(from: 0.0);
         }
@@ -85,8 +109,8 @@ class _LightningEffectState extends State<LightningEffect>
 
   /// Sharp flash curve: quick on, quick off. No slow fade.
   double _opacity(double t) {
-    if (t < 0.08) return t / 0.08;           // fast ramp
+    if (t < 0.08) return t / 0.08;
-    return 1.0 - ((t - 0.08) / 0.92);        // linear decay
+    return 1.0 - ((t - 0.08) / 0.92);
   }
 
   @override
@@ -117,11 +141,10 @@ class _LightningEffectState extends State<LightningEffect>
   }
 }
 
-
 /// A single bolt defined by a list of 2D points (0.0–1.0 in width×height space).
 class LightningBolt {
   final List<Offset> mainPath;
-  final List<List<Offset>> branches; // 0–2 forks off the main path
+  final List<List<Offset>> branches;
 
   const LightningBolt({required this.mainPath, this.branches = const []});
 
@@ -130,24 +153,19 @@ class LightningBolt {
   factory LightningBolt.random(Random rng) {
     final points = <Offset>[];
 
-    // Start: top, slight horizontal offset
     double x = 0.5 + (rng.nextDouble() - 0.5) * 0.15;
     points.add(Offset(x, 0.0));
 
-    // Zigzag down — 6–10 segments
     final segments = 6 + rng.nextInt(5);
     for (int i = 1; i < segments; i++) {
       final y = i / segments;
-      // Random horizontal offset — each segment adds jitter
       x += (rng.nextDouble() - 0.5) * 0.25;
-      x = x.clamp(0.05, 0.95); // stay on screen
+      x = x.clamp(0.05, 0.95);
       points.add(Offset(x, y));
     }
 
-    // End: bottom
     points.add(Offset(x.clamp(0.1, 0.9), 1.0));
 
-    // Branches — 0–2 forks from random points along the main path
     final branches = <List<Offset>>[];
     final branchCount = rng.nextInt(3);
     for (int b = 0; b < branchCount; b++) {
@@ -160,7 +178,7 @@ class LightningBolt {
       double by = start.dy;
       final branchLen = 2 + rng.nextInt(3);
       for (int j = 0; j < branchLen; j++) {
-        by += (0.05 + rng.nextDouble() * 0.12);
+        by += 0.05 + rng.nextDouble() * 0.12;
         bx += (rng.nextDouble() - 0.5) * 0.3;
         bx = bx.clamp(0.02, 0.98);
         by = by.clamp(0.0, 1.0);
@@ -173,7 +191,6 @@ class LightningBolt {
   }
 }
 
-
 class _LightningPainter extends CustomPainter {
   final LightningBolt bolt;
   final double opacity;
@@ -182,7 +199,8 @@ class _LightningPainter extends CustomPainter {
 
   @override
   void paint(Canvas canvas, Size size) {
-    final toScreen = (Offset p) => Offset(p.dx * size.width, p.dy * size.height);
+    Offset toScreen(Offset p) => Offset(p.dx * size.width, p.dy * size.height);
+
     final scaledMain = bolt.mainPath.map(toScreen).toList();
     final scaledBranches = bolt.branches
         .map((b) => b.map(toScreen).toList())
@@ -191,7 +209,6 @@ class _LightningPainter extends CustomPainter {
     final baseColor = AppColors.accent.withAlpha((opacity * 255).round());
     final glowColor = AppColors.accent.withAlpha((opacity * 0.35 * 255).round());
 
-    // Glow
     final glowPaint = Paint()
       ..color = glowColor
       ..strokeWidth = 18
@@ -202,7 +219,6 @@ class _LightningPainter extends CustomPainter {
 
     _drawPath(canvas, scaledMain, scaledBranches, glowPaint);
 
-    // Core
     final corePaint = Paint()
       ..color = baseColor
       ..strokeWidth = 5
@@ -212,7 +228,6 @@ class _LightningPainter extends CustomPainter {
 
     _drawPath(canvas, scaledMain, scaledBranches, corePaint);
 
-    // Hot center
     if (opacity > 0.6) {
       final hotPaint = Paint()
         ..color = Colors.white.withAlpha((opacity * 180).round())
@@ -225,8 +240,12 @@ class _LightningPainter extends CustomPainter {
     }
   }
 
-  void _drawPath(Canvas canvas, List<Offset> main,
+  void _drawPath(
-      List<List<Offset>> branches, Paint paint) {
+    Canvas canvas,
+    List<Offset> main,
+    List<List<Offset>> branches,
+    Paint paint,
+  ) {
     final mainPath = Path()..moveTo(main.first.dx, main.first.dy);
     for (int i = 1; i < main.length; i++) {
       mainPath.lineTo(main[i].dx, main[i].dy);

lib/components/sidebar_contents/discord_link_button.dart

@@ -14,8 +14,8 @@ class DiscordLinkButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return IconButton(
+    return const IconButton(
-      icon: const Icon(Icons.discord, color: AppColors.textWhite, size: 28),
+      icon: Icon(Icons.discord, color: AppColors.textWhite, size: 28),
       onPressed: launchDiscord,
       tooltip: 'Join Discord',
       splashRadius: 24,

lib/components/sidebar_contents/gdpr_button.dart

@@ -76,8 +76,8 @@ class GdprButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return IconButton(
+    return const IconButton(
-      icon: const Icon(Icons.admin_panel_settings_outlined,
+      icon: Icon(Icons.admin_panel_settings_outlined,
           color: AppColors.textWhite, size: 28),
       onPressed: showConsentForm,
       tooltip: 'Ad consent & privacy choices',

lib/components/sidebar_contents/info_button.dart

@@ -14,8 +14,8 @@ class InfoButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return IconButton(
+    return const IconButton(
-      icon: const Icon(Icons.help_outline, color: AppColors.textWhite, size: 28),
+      icon: Icon(Icons.help_outline, color: AppColors.textWhite, size: 28),
       onPressed: launchGitHub,
       tooltip: 'About ReVoltVPN',
       splashRadius: 24,

lib/components/sidebar_contents/privacy_policy_button.dart

@@ -6,7 +6,9 @@ class PrivacyPolicyButton extends StatelessWidget {
   const PrivacyPolicyButton({super.key});
 
   static Future<void> launchPrivacyPolicy() async {
-    final Uri url = Uri.parse('https://github.com/esefxdz/ReVoltVPN/blob/main/PRIVACY_POLICY.md');
+    final Uri url = Uri.parse(
+      'https://github.com/esefxdz/ReVoltVPN/blob/main/PRIVACY_POLICY.md',
+    );
     if (!await launchUrl(url, mode: LaunchMode.externalApplication)) {
       debugPrint('Could not launch $url');
     }
@@ -14,8 +16,12 @@ class PrivacyPolicyButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return IconButton(
+    return const IconButton(
-      icon: const Icon(Icons.privacy_tip_outlined, color: AppColors.textWhite, size: 28),
+      icon: Icon(
+        Icons.privacy_tip_outlined,
+        color: AppColors.textWhite,
+        size: 28,
+      ),
       onPressed: launchPrivacyPolicy,
       tooltip: 'Privacy Policy',
       splashRadius: 24,

lib/components/sidebar_contents/website_button.dart

@@ -14,8 +14,8 @@ class WebsiteButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return IconButton(
+    return const IconButton(
-      icon: const Icon(Icons.language, color: AppColors.textWhite, size: 28),
+      icon: Icon(Icons.language, color: AppColors.textWhite, size: 28),
       onPressed: launchWebsite,
       tooltip: 'Website',
       splashRadius: 24,

lib/components/status_bar.dart

@@ -1,62 +1,31 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:revoltvpn/components/online_dot.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 import 'package:revoltvpn/logic/vpn_connection.dart';
-import 'package:revoltvpn/logic/session_timer.dart';
-import 'package:revoltvpn/logic/server_list.dart';
-import 'package:revoltvpn/components/online_dot.dart';
-import 'package:revoltvpn/screens/server_selector/selection_screen.dart';
 
 class StatusBar extends StatelessWidget {
   const StatusBar({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return Consumer2<VpnConnection, SessionTimer>(
+    return Consumer<VpnConnection>(
-      builder: (context, vpn, timer, _) {
+      builder: (context, vpn, _) {
         final isConnected = vpn.status == VpnStatus.connected;
-        final isConnecting = vpn.status == VpnStatus.connecting;
+        final statusLabel = switch (vpn.status) {
-        final serverHealthy =
+          VpnStatus.connected => 'Connected',
-            vpn.serverReachable || (isConnected && timer.hasSyncedOnce);
+          VpnStatus.connecting => 'Connecting…',
-        final sessionOrTunnelHealthy = timer.hasSyncedOnce || vpn.serverReachable;
+          VpnStatus.disconnecting => 'Disconnecting…',
-
+          VpnStatus.error => 'Error',
-        final statusLabel = isConnected
+          VpnStatus.disconnected => vpn.serverReachable ? 'Ready' : 'Offline',
-            ? (sessionOrTunnelHealthy ? 'Online' : 'Syncing…')
+        };
-            : (isConnecting
-                ? 'Connecting…'
-                : (vpn.serverReachable ? 'Ready' : 'Offline'));
-
-        final server = context.watch<ServerList>().selected;
 
         return Padding(
           padding: const EdgeInsets.symmetric(horizontal: 24),
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
-              GestureDetector(
+              Container(
-                onTap: () {
-                  Navigator.of(context).push(
-                    PageRouteBuilder(
-                      transitionDuration: const Duration(milliseconds: 300),
-                      pageBuilder: (_, __, ___) => const SelectionScreen(),
-                      transitionsBuilder: (_, animation, __, child) {
-                        return SlideTransition(
-                          position: Tween<Offset>(
-                            begin: const Offset(1.0, 0.0),
-                            end: Offset.zero,
-                          ).animate(
-                            CurvedAnimation(
-                              parent: animation,
-                              curve: Curves.easeOut,
-                            ),
-                          ),
-                          child: child,
-                        );
-                      },
-                    ),
-                  );
-                },
-                child: Container(
                 padding:
                     const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
                 decoration: BoxDecoration(
@@ -66,12 +35,16 @@ class StatusBar extends StatelessWidget {
                 ),
                 child: Row(
                   children: [
-                      Image.asset(server.flagAsset, width: 20, height: 20),
+                    Image.asset(
+                      'assets/finland_flag_256.png',
+                      width: 20,
+                      height: 20,
+                    ),
                     const SizedBox(width: 8),
-                      Expanded(
+                    const Expanded(
                       child: Text(
-                          server.name,
+                        'Helsinki, Finland',
-                          style: const TextStyle(
+                        style: TextStyle(
                           color: AppColors.accent,
                           fontWeight: FontWeight.w600,
                           fontSize: 13,
@@ -79,15 +52,9 @@ class StatusBar extends StatelessWidget {
                         ),
                       ),
                     ),
-                      const Icon(
-                        Icons.chevron_right,
-                        color: AppColors.textDim,
-                        size: 20,
-                      ),
                   ],
                 ),
               ),
-              ),
               const SizedBox(height: 8),
               Container(
                 padding:
@@ -100,7 +67,7 @@ class StatusBar extends StatelessWidget {
                 child: Row(
                   children: [
                     OnlineDot(
-                      isOnline: serverHealthy,
+                      isOnline: isConnected,
                       label: statusLabel,
                     ),
                     const Spacer(),

lib/logic/connection_settings.dart

@@ -18,23 +18,32 @@ abstract final class ConnectionSettings {
     final prefs = await SharedPreferences.getInstance();
     final storedMode = prefs.getString(_modeKey);
 
-    // Any unrecognized value (including the pre-V3 'auto') is TUN. 'proxy' is
+    // Only the explicit current proxy value restores SOCKS5. Unknown and
-    // the only persisted value that selects the SOCKS5 mode.
+    // obsolete values, including the former 'auto'/'ass' labels, fail closed
+    // to full-tunnel TUN instead of silently selecting a weaker route.
     _mode = storedMode == ConnectionMode.proxy.name
         ? ConnectionMode.proxy
         : ConnectionMode.tun;
 
     if (storedMode != _mode.name) {
-      await prefs.setString(_modeKey, _mode.name);
+      final migrated = await prefs.setString(_modeKey, _mode.name);
+      if (!migrated) {
+        throw StateError('Could not persist migrated connection mode.');
+      }
     }
 
     _initialized = true;
   }
 
-  static Future<void> setMode(ConnectionMode mode) async {
+  static Future<bool> setMode(ConnectionMode mode) async {
+    if (_initialized && _mode == mode) return true;
+
+    final prefs = await SharedPreferences.getInstance();
+    final saved = await prefs.setString(_modeKey, mode.name);
+    if (!saved) return false;
+
     _mode = mode;
     _initialized = true;
-    final prefs = await SharedPreferences.getInstance();
+    return true;
-    await prefs.setString(_modeKey, mode.name);
   }
 }

lib/logic/power_settings.dart

@@ -1,13 +1,7 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 
-/// Background-survival controls.
+/// Android background-survival controls that ReVolt can actually verify.
-///
-/// Android stops background services of apps that are not exempt from Doze and
-/// App Standby, and it tears down the whole process group when a task is swiped
-/// away. Those are OS behaviours, not app bugs; the battery-optimisation
-/// exemption is the one sanctioned way an app can ask for around them, and it
-/// still needs one user tap.
 abstract final class PowerSettings {
   PowerSettings._();
 
@@ -15,7 +9,6 @@ abstract final class PowerSettings {
     'com.revoltvpn.app/power',
   );
 
-  /// Whether the OS has exempted this app from Doze / App Standby.
   static Future<bool> isBatteryOptimisationDisabled() async {
     if (kIsWeb) return true;
     try {
@@ -28,8 +21,6 @@ abstract final class PowerSettings {
     }
   }
 
-  /// Shows the system exemption dialog. Returns false only when no system UI
-  /// could be opened at all — a user declining still returns true.
   static Future<bool> requestDisableBatteryOptimisation() async {
     if (kIsWeb) return true;
     try {
@@ -41,53 +32,4 @@ abstract final class PowerSettings {
       return false;
     }
   }
-
-  /// Whether the VPN runtime is genuinely alive.
-  ///
-  /// The Xray service runs in a separate process, so nothing it stores in
-  /// statics is visible to us. This asks the OS instead: is our service process
-  /// running, and (for TUN) is there an active VPN transport?
-  static Future<VpnRuntimeState> runtimeState() async {
-    if (kIsWeb) return const VpnRuntimeState(processAlive: false, vpnTransport: false);
-    try {
-      final result = await _channel.invokeMapMethod<String, dynamic>(
-        'isVpnRuntimeAlive',
-      );
-      return VpnRuntimeState(
-        processAlive: result?['processAlive'] == true,
-        vpnTransport: result?['vpnTransport'] == true,
-      );
-    } catch (_) {
-      return const VpnRuntimeState(processAlive: false, vpnTransport: false);
-    }
-  }
-
-  /// Pushes the absolute session-expiry timestamp (epoch ms) to the VPN
-  /// service so it can tear the tunnel down even when the UI process is gone.
-  static Future<void> setSessionExpiry(int expiresAtMs) async {
-    if (kIsWeb) return;
-    try {
-      await _channel.invokeMethod<void>('setSessionExpiry', {
-        'expiresAtMs': expiresAtMs,
-      });
-    } catch (_) {
-      // Best-effort. The daemon also keeps its last persisted expiry.
-    }
-  }
-}
-
-@immutable
-class VpnRuntimeState {
-  final bool processAlive;
-  final bool vpnTransport;
-
-  const VpnRuntimeState({
-    required this.processAlive,
-    required this.vpnTransport,
-  });
-
-  /// TUN needs both a live service and a real VPN interface. Proxy mode has no
-  /// VPN interface at all, so the service process is the whole signal.
-  bool aliveFor({required bool tunMode}) =>
-      processAlive && (!tunMode || vpnTransport);
 }

lib/logic/server_list.dart

@@ -1,69 +0,0 @@
-import 'package:flutter/foundation.dart';
-import 'package:shared_preferences/shared_preferences.dart';
-
-// ── lib/logic/server_list.dart ──────────────────────────────────────────────
-// Server data model and ChangeNotifier — shared by StatusBar (shows current
-// server name/flag) and SelectionScreen (lets user pick a server).
-//
-// Each server is defined by its tunnel IP/port. Reality credentials (public
-// key, shortId) come from /session/status per session; only the transport
-// parameters live in AppConfig.
-//
-// When multi-server ships:
-//   - _all becomes a fetched list (from /api/servers or bundled config)
-//   - SelectionScreen shows multiple rows
-//   - select() triggers a disconnect/reconnect cycle if the tunnel is active
-
-class ServerInfo {
-  final String id;
-  final String name;
-  final String flagAsset;
-  final String ip;
-  final int port;
-
-  const ServerInfo({
-    required this.id,
-    required this.name,
-    required this.flagAsset,
-    required this.ip,
-    required this.port,
-  });
-}
-
-class ServerList extends ChangeNotifier {
-  static const _all = [
-    ServerInfo(
-      id: 'finland',
-      name: 'Helsinki, Finland',
-      flagAsset: 'assets/finland_flag_256.png',
-      ip: '204.168.246.88',
-      port: 443,
-    ),
-  ];
-
-  int _selectedIndex = 0;
-
-  List<ServerInfo> get all => _all;
-  int get selectedIndex => _selectedIndex;
-  ServerInfo get selected => _all[_selectedIndex];
-
-  // Loads persisted selection from SharedPreferences.
-  // Fire-and-forget — UI starts with default, updates when prefs load.
-  Future<void> init() async {
-    final prefs = await SharedPreferences.getInstance();
-    final saved = prefs.getInt('selected_server_index') ?? 0;
-    if (saved >= 0 && saved < _all.length && saved != _selectedIndex) {
-      _selectedIndex = saved;
-      notifyListeners();
-    }
-  }
-
-  // Switches to a different server. Persists the choice.
-  Future<void> select(int index) async {
-    if (index == _selectedIndex || index < 0 || index >= _all.length) return;
-    _selectedIndex = index;
-    notifyListeners();
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.setInt('selected_server_index', index);
-  }
-}

lib/main.dart

@@ -7,7 +7,6 @@ import 'package:revoltvpn/logic/ad_manager.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 import 'package:revoltvpn/logic/connection_settings.dart';
 import 'package:revoltvpn/logic/haptic_settings.dart';
-import 'package:revoltvpn/logic/server_list.dart';
 import 'package:revoltvpn/logic/session_timer.dart';
 import 'package:revoltvpn/logic/vpn_connection.dart';
 import 'package:revoltvpn/screens/intro.dart';
@@ -26,13 +25,10 @@ Future<void> main() async {
     systemNavigationBarIconBrightness: Brightness.light,
   ));
 
-  FlutterError.onError = (details) {
+  FlutterError.onError = FlutterError.presentError;
-    debugPrint('[FlutterError] ${details.exception}');
-  };
-
   PlatformDispatcher.instance.onError = (error, stack) {
     debugPrint('[PlatformError] $error\n$stack');
-    return true;
+    return false;
   };
 
   runApp(const ReVoltApp());
@@ -47,8 +43,6 @@ class ReVoltApp extends StatelessWidget {
       providers: [
         ChangeNotifierProvider(create: (_) => VpnConnection(), lazy: false),
         ChangeNotifierProxyProvider<VpnConnection, SessionTimer>(
-          // Eager, like VpnConnection: the timer has to be listening before the
-          // engine reports an already-running tunnel, not after the intro.
           lazy: false,
           create: (ctx) =>
               SessionTimer(vpnConnection: ctx.read<VpnConnection>()),
@@ -56,10 +50,6 @@ class ReVoltApp extends StatelessWidget {
               prev ?? SessionTimer(vpnConnection: vpn),
         ),
         ChangeNotifierProvider(create: (_) => AdManager()),
-        ChangeNotifierProvider(
-          create: (_) => ServerList()..init(),
-          lazy: false,
-        ),
       ],
       child: MaterialApp(
         title: 'ReVolt VPN',

lib/screens/intro.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
-import 'package:revoltvpn/logic/haptic_settings.dart';
 import 'package:revoltvpn/logic/vpn_connection.dart';
 import 'package:revoltvpn/screens/main_screen.dart';
 import 'package:revoltvpn/screens/settings/in_settings/rain.dart';
@@ -45,11 +44,10 @@ class _IntroScreenState extends State<IntroScreen> with WidgetsBindingObserver {
     final elapsed = Stopwatch()..start();
     final vpn = context.read<VpnConnection>();
 
-    // The overlays and haptic layer read these before MainScreen mounts.
+    // Haptics is initialized before runApp. Only visual preferences remain.
     final settingsPrefs = Future.wait([
       loadRainPref(),
       loadLightningPref(),
-      HapticSettings.initialize(),
     ]);
 
     try {
@@ -80,11 +78,10 @@ class _IntroScreenState extends State<IntroScreen> with WidgetsBindingObserver {
 
   void _navigateIfReady() {
     if (!mounted || _navigated || !_bootComplete) return;
-    if (WidgetsBinding.instance.lifecycleState == AppLifecycleState.paused) {
+    final lifecycle = WidgetsBinding.instance.lifecycleState;
-      return;
+    if (lifecycle != null && lifecycle != AppLifecycleState.resumed) return;
-    }
-    _navigated = true;
 
+    _navigated = true;
     Navigator.of(context).pushReplacement(
       PageRouteBuilder(
         transitionDuration: const Duration(milliseconds: 400),

lib/screens/server_selector/selection_screen.dart

@@ -1,63 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
-import 'package:revoltvpn/logic/app_colors.dart';
-import 'package:revoltvpn/logic/server_list.dart';
-
-// ── lib/screens/server_selector/selection_screen.dart ──────────────────────
-// Server picker — reads the server list from the ServerList provider.
-// Each row shows a flag + city name.  Tapping a row persists the choice
-// and pops back.  No latency measurement — the app runs inside a Reality
-// tunnel and must not emit separate probe traffic.
-
-class SelectionScreen extends StatelessWidget {
-  const SelectionScreen({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    final serverList = context.watch<ServerList>();
-
-    return Scaffold(
-      backgroundColor: AppColors.bgDeep,
-      appBar: AppBar(
-        backgroundColor: AppColors.bgSurface,
-        elevation: 0,
-        leading: IconButton(
-          icon: const Icon(Icons.arrow_back, color: AppColors.textWhite),
-          onPressed: () => Navigator.of(context).pop(),
-        ),
-        title: const Text(
-          'Select Server',
-          style: TextStyle(
-            color: AppColors.textWhite,
-            fontWeight: FontWeight.w600,
-          ),
-        ),
-      ),
-      body: ListView.builder(
-        itemCount: serverList.all.length,
-        itemBuilder: (context, index) {
-          final server = serverList.all[index];
-          final isSelected = index == serverList.selectedIndex;
-
-          return ListTile(
-            leading: Image.asset(server.flagAsset, width: 28, height: 28),
-            title: Text(server.name,
-                style: TextStyle(
-                  color: isSelected ? AppColors.accent : AppColors.textWhite,
-                  fontWeight: FontWeight.w600,
-                )),
-            trailing: isSelected
-                ? const Icon(Icons.check, color: AppColors.accent)
-                : null,
-            onTap: () {
-              serverList.select(index);
-              Navigator.of(context).pop();
-            },
-            contentPadding:
-                const EdgeInsets.symmetric(horizontal: 20, vertical: 8),
-          );
-        },
-      ),
-    );
-  }
-}

lib/screens/settings/in_settings/background_reliability.dart

@@ -2,12 +2,9 @@ import 'package:flutter/material.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 import 'package:revoltvpn/logic/power_settings.dart';
 
-/// Keeping the tunnel alive is an OS concern, not an app one.
+/// Android may restrict background work when battery optimisation is active.
-///
+/// Surface the OS setting we can actually detect and request; do not promise
-/// Android stops background services of apps that are not exempt from Doze, and
+/// reboot/Always-on restoration that the per-session runtime cannot guarantee.
-/// removes the whole process group when its task is swiped away. There are
-/// exactly two sanctioned ways around that, both requiring one user tap, and
-/// neither can be enabled programmatically. This tile surfaces both.
 class BackgroundReliabilityTile extends StatefulWidget {
   const BackgroundReliabilityTile({super.key});
 
@@ -35,8 +32,6 @@ class _BackgroundReliabilityTileState extends State<BackgroundReliabilityTile>
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
-    // The exemption is granted in a system dialog, so the only reliable moment
-    // to re-read it is when we come back to the foreground.
     if (state == AppLifecycleState.resumed) _refresh();
   }
 
@@ -68,8 +63,8 @@ class _BackgroundReliabilityTileState extends State<BackgroundReliabilityTile>
             style: TextStyle(color: AppColors.textWhite, fontSize: 15),
           ),
           subtitle: Text(
-            'Android stops background apps to save power. Disabling battery '
+            'Android may restrict background work to save power. ReVolt only '
-            'optimisation is what keeps the VPN running when the app is closed.',
+            'shows the system control it can verify.',
             style: TextStyle(color: AppColors.textDim, fontSize: 12),
           ),
         ),
@@ -83,8 +78,8 @@ class _BackgroundReliabilityTileState extends State<BackgroundReliabilityTile>
                     ? 'Battery optimisation: checking…'
                     : exempt
                         ? 'Battery optimisation: disabled for Revolt VPN ✓'
-                        : 'Battery optimisation: still active — the system may '
+                        : 'Battery optimisation: active — Android may stop '
-                            'stop the VPN in the background.',
+                            'background VPN work.',
                 style: TextStyle(
                   color: exempt == true ? AppColors.accent : AppColors.textMuted,
                   fontSize: 12,

lib/screens/settings/in_settings/connection_mode.dart

@@ -51,8 +51,14 @@ class _ConnectionModeTileState extends State<ConnectionModeTile> {
       return;
     }
 
-    await ConnectionSettings.setMode(next);
+    final saved = await ConnectionSettings.setMode(next);
     if (!mounted) return;
+    if (!saved) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Could not save connection mode.')),
+      );
+      return;
+    }
 
     setState(() {
       _mode = next;
@@ -61,10 +67,6 @@ class _ConnectionModeTileState extends State<ConnectionModeTile> {
     widget.onChanged?.call(next);
   }
 
-  /// Recovers from an orphaned proxy: tear the runtime down and start a fresh
-  /// session so a readable set of credentials exists again. No rewarded ad —
-  /// the user is repairing a connection they already paid for, not opening a
-  /// new one.
   Future<void> _reconnect() async {
     if (_reconnecting) return;
     final vpn = context.read<VpnConnection>();
@@ -168,11 +170,6 @@ class _ConnectionModeTileState extends State<ConnectionModeTile> {
             builder: (context, vpn, _) {
               final session = vpn.activeSocksSession;
               if (session == null) {
-                // The proxy can be running while this session is unknown:
-                // Android killed the app process, the foreground service kept
-                // the listener alive, and its credentials existed only in the
-                // memory that died with it. Saying "Connect" there would be a
-                // lie — the user is already connected.
                 final orphaned = vpn.status == VpnStatus.connected &&
                     vpn.adoptedRunningRuntime;
                 if (orphaned) {

lib/screens/settings/in_settings/lightning.dart

@@ -2,9 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 
-// ── lib/screens/settings/in_settings/lightning.dart ─────────────────────────
-// Toggle for the lightning strike overlay on the main screen.
-
 final ValueNotifier<bool> lightningEnabled = ValueNotifier(true);
 
 Future<void> loadLightningPref() async {
@@ -35,7 +32,9 @@ class _LightningToggleTileState extends State<LightningToggleTile> {
 
   Future<void> _toggle(bool value) async {
     final prefs = await SharedPreferences.getInstance();
-    await prefs.setBool('lightning_effect_enabled', value);
+    final saved = await prefs.setBool('lightning_effect_enabled', value);
+    if (!saved || !mounted) return;
+
     lightningEnabled.value = value;
     setState(() => _on = value);
   }

lib/screens/settings/in_settings/rain.dart

@@ -2,9 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 
-// ── lib/screens/settings/in_settings/rain.dart ──────────────────────────────
-// Toggle for the animated rain overlay on the main screen.
-
 final ValueNotifier<bool> rainEnabled = ValueNotifier(true);
 
 Future<void> loadRainPref() async {
@@ -35,7 +32,9 @@ class _RainToggleTileState extends State<RainToggleTile> {
 
   Future<void> _toggle(bool value) async {
     final prefs = await SharedPreferences.getInstance();
-    await prefs.setBool('rain_effect_enabled', value);
+    final saved = await prefs.setBool('rain_effect_enabled', value);
+    if (!saved || !mounted) return;
+
     rainEnabled.value = value;
     setState(() => _on = value);
   }