chore(admin-ui): site subscription show uses page header

resources/views/admin/site_subscriptions/show.blade.php

@@ -40,11 +40,29 @@
     };
 @endphp
 
-<div class="card mb-20">
-    <p class="muted muted-tight">
-        这里是总台视角的订阅详情页，用于运营排查“订阅状态/到期/关联平台订单/同步记录”。
-    </p>
+<div class="page-header mb-20" data-page="admin.site_subscriptions.show">
+    <div class="page-header-main">
+        <div>
+            <div class="page-header-title">订阅详情</div>
+            <div class="page-header-subtitle">这里是总台视角的订阅详情页，用于运营排查“订阅状态/到期/关联平台订单/同步记录”。</div>
+        </div>
 
+        <div class="page-header-actions">
+            @if($safeBackForLinks !== '')
+                <a href="{!! $safeBackForLinks !!}" class="btn btn-secondary btn-sm">返回上一页（保留上下文）</a>
+            @endif
+            <a href="{!! $makeSubscriptionIndexUrl([]) !!}" class="btn btn-secondary btn-sm">返回订阅列表（保留上下文）</a>
+        </div>
+    </div>
+
+    <div class="page-header-meta">
+        <div>订阅号：<strong>{{ $subscription->subscription_no }}</strong></div>
+        <div>状态：{{ ($statusLabels[$subscription->status] ?? $subscription->status) }}（{{ $subscription->status }}）</div>
+        <div>到期：{{ optional($subscription->ends_at)->format('Y-m-d H:i:s') ?: '-' }}</div>
+    </div>
+</div>
+
+<div class="card mb-20">
     <div class="grid-4">
         <div>
             <div class="muted">订阅号</div>
@@ -127,17 +145,6 @@
         </div>
     </div>
 
-    <div class="mt-10">
-        @php
-            // $safeBackForLinks 已在页头统一计算，这里不重复构造，避免口径漂移。
-        @endphp
-
-        @if($safeBackForLinks !== '')
-            <a href="{!! $safeBackForLinks !!}" class="muted">← 返回上一页（保留上下文）</a>
-            <span class="muted">｜</span>
-        @endif
-
-        <a href="{!! $makeSubscriptionIndexUrl([]) !!}" class="muted">← 返回订阅列表（保留上下文）</a>
         @if($subscription->subscription_no)
             <div class="mt-6 actions gap-10">
                 <a class="btn btn-secondary btn-sm" href="{!! $makePlatformOrderUrl(['site_subscription_id' => $subscription->id]) !!}">查看关联平台订单（按订阅ID精确过滤）</a>