fix(client): 继续支付补 launchUrl 异常兜底 + 我的 hub 授权管理图标统一 shield

- license_orders_tab _continuePay 包 try/catch，打开失败出 toast 不静默
- me hub 授权管理图标 trendingUp→shield，与侧边栏一致；me golden ×3 同步更新

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

client/lib/screens/license/license_orders_tab.dart

@@ -717,7 +717,13 @@ class _LicenseOrdersTabState extends ConsumerState<LicenseOrdersTab> {
       if (mounted) showDsToast(context, '支付链接不可用，请刷新后重试');
       return;
     }
-    await launchUrl(Uri.parse(r.payUrl), mode: LaunchMode.externalApplication);
+    try {
+      await launchUrl(Uri.parse(r.payUrl), mode: LaunchMode.externalApplication);
+    } catch (e) {
+      if (mounted) {
+        showDsToast(context, '无法打开支付链接，请刷新后重试', bg: context.tokens.danger);
+      }
+    }
   }
 }
 

client/lib/screens/me/me_screen.dart

@@ -69,7 +69,7 @@ class MeScreen extends ConsumerWidget {
                 label: '用户管理',
                 onTap: () => context.go('/settings/users')),
             MHubItem(
-                icon: LucideIcons.trendingUp,
+                icon: LucideIcons.shield,
                 label: '授权管理',
                 onTap: () => context.go('/me/license')),
             MHubItem(