design+client: 抽 .view-body/PageBody 统一桌面内容页宽度(600/wide 840)——stats·contact 补约束,settings·contact 560→600,九页收口

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P9G7E3wmAYL9KeYCVZVsqu

client/lib/screens/account_page.dart

@@ -12,6 +12,7 @@ import '../state/navigation_provider.dart';
 import '../widgets/account_screens.dart';
 import '../widgets/app_top_bar.dart';
 import '../widgets/notification_bell.dart';
+import '../widgets/page_body.dart';
 import '../widgets/pangolin_icons.dart';
 import 'invite_page.dart';
 import 'notifications_page.dart';
@@ -50,7 +51,7 @@ class AccountPage extends ConsumerWidget {
       }
     }
 
-    final body = ListView(
+    final body = PageBody(child: ListView(
       padding: EdgeInsets.fromLTRB(pad, isWide ? 6 : 0, pad, 24),
       children: [
         _PlanBanner(
@@ -127,7 +128,7 @@ class AccountPage extends ConsumerWidget {
           ),
         ]),
       ],
-    );
+    ));
 
     if (isWide) return body;
     return Column(crossAxisAlignment: CrossAxisAlignment.start, children: [