feat(app): add secure routing and runtime resilience

Add explicit TUN and SOCKS5 connection modes, app routing controls, authenticated per-session local SOCKS5, Android network monitoring, persistent haptics, resilient session recovery, notification hardening and client-side Hivemind cleanup.

Keep the hosted flutter_vless_android 1.1.5 runtime as the base and apply the Android compatibility/security patches at build time instead of restoring the unstable vendored runtime.

lib/logic/secure_socks_session.dart

@@ -0,0 +1,89 @@
+import 'dart:convert';
+import 'dart:io';
+import 'dart:math';
+
+class SecureSocksSession {
+  static const String inboundTag = 'revolt-secure-socks';
+  static final Random _random = Random.secure();
+
+  final int port;
+  final String username;
+  final String password;
+  final String configJson;
+
+  const SecureSocksSession._({
+    required this.port,
+    required this.username,
+    required this.password,
+    required this.configJson,
+  });
+
+  static Future<SecureSocksSession> create(String baseConfig) async {
+    final decoded = jsonDecode(baseConfig);
+    if (decoded is! Map<String, dynamic>) {
+      throw const FormatException('VLESS configuration must be a JSON object.');
+    }
+
+    final reservation = await ServerSocket.bind(
+      InternetAddress.loopbackIPv4,
+      0,
+      shared: false,
+    );
+    final port = reservation.port;
+    await reservation.close();
+
+    if (port <= 1024 || port > 65535) {
+      throw StateError('Could not allocate a safe local SOCKS5 port.');
+    }
+
+    final username = _token(16);
+    final password = _token(32);
+
+    final sourceInbounds = decoded['inbounds'];
+    final inbounds = <dynamic>[];
+    if (sourceInbounds is List) {
+      for (final value in sourceInbounds) {
+        if (value is Map) {
+          final protocol = value['protocol']?.toString().toLowerCase();
+          // ReVolt owns local proxy ingress on Android. Drop imported SOCKS/HTTP
+          // listeners so a stale no-auth proxy cannot remain reachable beside
+          // the authenticated session listener.
+          if (protocol == 'socks' || protocol == 'http') continue;
+        }
+        inbounds.add(value);
+      }
+    }
+
+    inbounds.add(<String, dynamic>{
+      'tag': inboundTag,
+      'port': port,
+      'listen': '127.0.0.1',
+      'protocol': 'socks',
+      'settings': <String, dynamic>{
+        'auth': 'password',
+        'udp': true,
+        'ip': '127.0.0.1',
+        'users': <Map<String, String>>[
+          <String, String>{'user': username, 'pass': password},
+        ],
+      },
+      'sniffing': <String, dynamic>{
+        'enabled': true,
+        'destOverride': <String>['http', 'tls'],
+      },
+    });
+    decoded['inbounds'] = inbounds;
+
+    return SecureSocksSession._(
+      port: port,
+      username: username,
+      password: password,
+      configJson: jsonEncode(decoded),
+    );
+  }
+
+  static String _token(int byteCount) {
+    final bytes = List<int>.generate(byteCount, (_) => _random.nextInt(256));
+    return bytes.map((value) => value.toRadixString(16).padLeft(2, '0')).join();
+  }
+}