新增：隐私政策和用户协议

lib/features/profile/profile_screen.dart

@@ -5,6 +5,7 @@ import 'package:cached_network_image/cached_network_image.dart';
 import '../../core/api/api_config.dart';
 import '../../core/api/services/user_api.dart';
 import '../../core/auth/auth_service.dart';
+import '../recharge/payment_webview_screen.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/user/user_state.dart';
 import '../../core/theme/app_spacing.dart';
@@ -101,14 +102,28 @@ class _ProfileScreenState extends State<ProfileScreen> {
             _MenuSection(
               items: [
                 _MenuItem(
-                  title: 'Credit Store',
+                  title: 'Privacy Policy',
                   icon: LucideIcons.chevron_right,
-                  onTap: () => Navigator.of(context).pushNamed('/recharge'),
+                  onTap: () => Navigator.of(context).push(
+                    MaterialPageRoute<void>(
+                      builder: (_) => PaymentWebViewScreen(
+                        paymentUrl: 'http://www.petsheroai.xyz/privacy.html',
+                        title: 'Privacy Policy',
+                      ),
+                    ),
+                  ),
                 ),
                 _MenuItem(
-                  title: 'Settings',
+                  title: 'User Agreement',
                   icon: LucideIcons.chevron_right,
-                  onTap: () {},
+                  onTap: () => Navigator.of(context).push(
+                    MaterialPageRoute<void>(
+                      builder: (_) => PaymentWebViewScreen(
+                        paymentUrl: 'http://www.petsheroai.xyz/terms.html',
+                        title: 'User Agreement',
+                      ),
+                    ),
+                  ),
                 ),
               ],
             ),

lib/features/recharge/payment_webview_screen.dart

@@ -6,11 +6,16 @@ import 'package:webview_flutter_android/webview_flutter_android.dart';
 import '../../core/theme/app_colors.dart';
 import '../../shared/widgets/top_nav_bar.dart';
 
-/// 三方支付成功后在应用内打开 convert 链接的 WebView 页面
+/// 应用内 WebView 页面（支付、隐私政策、用户协议等）
 class PaymentWebViewScreen extends StatefulWidget {
-  const PaymentWebViewScreen({super.key, required this.paymentUrl});
+  const PaymentWebViewScreen({
+    super.key,
+    required this.paymentUrl,
+    this.title = 'Payment',
+  });
 
   final String paymentUrl;
+  final String title;
 
   @override
   State<PaymentWebViewScreen> createState() => _PaymentWebViewScreenState();
@@ -41,7 +46,7 @@ class _PaymentWebViewScreenState extends State<PaymentWebViewScreen> {
       appBar: PreferredSize(
         preferredSize: const Size.fromHeight(56),
         child: TopNavBar(
-          title: 'Payment',
+          title: widget.title,
           showBackButton: true,
           onBack: () => Navigator.of(context).pop(),
         ),