Preserve platform order list context via back param links

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

@@ -738,7 +738,7 @@
         @forelse($orders as $order)
             <tr>
                 <td>{{ $order->id }}</td>
-                <td><a href="/admin/platform-orders/{{ $order->id }}">{{ $order->order_no }}</a></td>
+                <td><a href="/admin/platform-orders/{{ $order->id }}?back={{ urlencode(request()->getRequestUri()) }}">{{ $order->order_no }}</a></td>
                 <td>
                     @if($order->merchant)
                         <a href="{!! request()->fullUrlWithQuery(['merchant_id' => $order->merchant->id, 'page' => null]) !!}" class="link">{{ $order->merchant->name }}</a>

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

@@ -544,6 +544,16 @@
 </div>
 
 <div class="mb-20" style="margin-top:16px;">
+    @php
+        $back = (string) request()->query('back', '');
+        $safeBack = str_starts_with($back, '/') ? $back : '';
+    @endphp
+
+    @if($safeBack)
+        <a href="{{ $safeBack }}" class="muted">← 返回上一页（保留上下文）</a>
+        <span class="muted">｜</span>
+    @endif
+
     <a href="/admin/platform-orders">← 返回平台订单列表</a>
 </div>
 @endsection