feat(admin): 订阅详情支持回跳平台订单列表(保留筛选)

resources/views/admin/platform_orders/index.blade.php

@@ -483,7 +483,11 @@
                 <td>
                     @if($order->siteSubscription)
                         <div>
-                            <a href="/admin/site-subscriptions/{{ $order->siteSubscription->id }}">{{ $order->siteSubscription->subscription_no }}</a>
+                            @php
+                                $backUri = request()->getRequestUri();
+                                $subLink = '/admin/site-subscriptions/' . $order->siteSubscription->id . '?' . \Illuminate\Support\Arr::query(['back' => $backUri]);
+                            @endphp
+                            <a href="{{ $subLink }}">{{ $order->siteSubscription->subscription_no }}</a>
                         </div>
                         <div class="muted muted-xs">
                             订阅ID：<a href="{!! request()->fullUrlWithQuery(['site_subscription_id' => $order->siteSubscription->id, 'page' => null]) !!}" class="muted">{{ $order->siteSubscription->id }}</a>

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

@@ -80,6 +80,16 @@
     </div>
 
     <div class="mt-10">
+        @php
+            $back = (string) request()->query('back', '');
+            $safeBack = str_starts_with($back, '/') ? $back : '';
+        @endphp
+
+        @if($safeBack)
+            <a href="{{ $safeBack }}" class="muted">← 返回平台订单列表（保留筛选）</a>
+            <span class="muted">｜</span>
+        @endif
+
         <a href="/admin/site-subscriptions" class="muted">← 返回订阅列表</a>
         @if($subscription->subscription_no)
             <span class="muted">｜</span>