feat: first-launch data disclosure dialog (v3.2.1+24)

lib/components/data_disclosure_dialog.dart

@@ -0,0 +1,104 @@
+// lib/components/data_disclosure_dialog.dart
+// First-launch data disclosure dialog — Google Play Data safety section requirement.
+// Shows once per install; preference persisted in SharedPreferences.
+
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:revoltvpn/logic/app_colors.dart';
+
+class DataDisclosureDialog {
+  DataDisclosureDialog._();
+
+  static const _key = 'data_disclosure_accepted';
+
+  /// Shows the disclosure dialog if the user hasn't accepted it yet.
+  /// Call once after the main screen is mounted (post-frame callback).
+  static Future<void> showIfFirstLaunch(BuildContext context) async {
+    final prefs = await SharedPreferences.getInstance();
+    if (prefs.getBool(_key) == true) return; // Already accepted.
+
+    if (!context.mounted) return;
+
+    await showDialog(
+      context: context,
+      barrierDismissible: false, // Must tap Continue — no tap-outside dismiss.
+      builder: (_) => _DisclosureDialog(
+        onContinue: () {
+          prefs.setBool(_key, true);
+          Navigator.of(context).pop(); // Dismiss the dialog.
+        },
+      ),
+    );
+  }
+}
+
+class _DisclosureDialog extends StatelessWidget {
+  final VoidCallback onContinue;
+
+  const _DisclosureDialog({required this.onContinue});
+
+  @override
+  Widget build(BuildContext context) {
+    return Dialog(
+      backgroundColor: AppColors.bgCard,
+      insetPadding: const EdgeInsets.symmetric(horizontal: 28, vertical: 40),
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(24, 28, 24, 20),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // Title
+            const Text(
+              'Before you connect',
+              style: TextStyle(
+                color: AppColors.textWhite,
+                fontSize: 20,
+                fontWeight: FontWeight.w700,
+              ),
+            ),
+            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 '
+              'connection duration and data usage, linked to your '
+              'account. We do not log or monitor the content of your '
+              'traffic. We do not share your data with third parties.'
+              'If you have more questions, visit our website.',
+              style: TextStyle(
+                color: AppColors.textMuted,
+                fontSize: 14,
+                height: 1.5,
+              ),
+            ),
+            const SizedBox(height: 24),
+
+            // Continue button — full-width, accent
+            SizedBox(
+              width: double.infinity,
+              child: ElevatedButton(
+                onPressed: onContinue,
+                style: ElevatedButton.styleFrom(
+                  backgroundColor: AppColors.accent,
+                  foregroundColor: AppColors.bgDeep,
+                  padding: const EdgeInsets.symmetric(vertical: 14),
+                  shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(10),
+                  ),
+                  textStyle: const TextStyle(
+                    fontSize: 16,
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+                child: const Text('Continue'),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/screens/main_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:revoltvpn/logic/app_colors.dart';
 import 'package:revoltvpn/components/connect_button.dart';
+import 'package:revoltvpn/components/data_disclosure_dialog.dart';
 import 'package:revoltvpn/components/sidebar_drawer.dart';
 import 'package:revoltvpn/components/timer_box.dart';
 import 'package:revoltvpn/components/speed_box.dart';
@@ -9,9 +10,23 @@ import 'package:revoltvpn/components/support_button.dart';
 import 'package:revoltvpn/components/rain.dart';
 import 'package:revoltvpn/components/lightning.dart';
 
-class MainScreen extends StatelessWidget {
+class MainScreen extends StatefulWidget {
   const MainScreen({super.key});
 
+  @override
+  State<MainScreen> createState() => _MainScreenState();
+}
+
+class _MainScreenState extends State<MainScreen> {
+  @override
+  void initState() {
+    super.initState();
+    // Show data disclosure on first launch — Google Play Data safety requirement.
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      DataDisclosureDialog.showIfFirstLaunch(context);
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(