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/stats_page.dart

@@ -11,6 +11,7 @@ import '../state/account_providers.dart';
 import '../state/app_providers.dart';
 import '../state/auth_provider.dart';
 import '../widgets/app_top_bar.dart';
+import '../widgets/page_body.dart';
 import '../widgets/pangolin_icons.dart';
 import '../widgets/period_card.dart';
 import '../widgets/usage_line_chart.dart';
@@ -69,7 +70,7 @@ class StatsPage extends ConsumerWidget {
         ref.invalidate(deviceUsageProvider(30));
         await ref.read(meProvider.notifier).refresh();
       },
-      child: ListView(
+      child: PageBody(child: ListView(
         padding: EdgeInsets.fromLTRB(isWide ? 32 : 20, isWide ? 8 : 4, isWide ? 32 : 20, 24),
         children: [
           // 顶行:标题(宽屏) + 设备下拉(右上角)
@@ -115,7 +116,7 @@ class StatsPage extends ConsumerWidget {
             ]),
           ),
         ],
-      ),
+      )),
     );
 
     if (isWide) return body;