订单详情：标记支付并生效的治理安全阀提示

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

@@ -129,6 +129,15 @@
         $canMarkPaid = ($order->payment_status !== 'paid') || ($order->status !== 'activated');
         $syncError = data_get($order->meta, 'subscription_activation_error.message');
         $syncErrorAt = data_get($order->meta, 'subscription_activation_error.at');
+
+        // 治理提示：标记支付并生效的安全阀（后端也会阻断）
+        $refundTotal = (float) $order->refundTotal();
+        $receiptTotal = (float) $order->receiptTotal();
+        $expectedPaid = (float) (((float) ($order->paid_amount ?? 0)) > 0 ? (float) $order->paid_amount : (float) ($order->payable_amount ?? 0));
+        $receiptCents = (int) round($receiptTotal * 100);
+        $expectedCents = (int) round($expectedPaid * 100);
+        $markPaidBlockedByRefund = $refundTotal > 0;
+        $markPaidBlockedByReceiptMismatch = $receiptCents > 0 && abs($receiptCents - $expectedCents) >= 1;
     @endphp
 
     <div style="margin-top:16px; display:flex; gap:12px; flex-wrap:wrap; align-items:center;">
@@ -137,6 +146,12 @@
             <button type="submit" @disabled(! $canMarkPaid)>标记支付并生效</button>
         </form>
 
+        @if($markPaidBlockedByRefund)
+            <div class="muted text-danger" style="margin-top:6px; width:100%;">提示：当前订单已存在退款记录/退款汇总，建议先核对退款轨迹与状态后再进行「标记支付并生效」。</div>
+        @elseif($markPaidBlockedByReceiptMismatch)
+            <div class="muted text-danger" style="margin-top:6px; width:100%;">提示：当前订单已存在支付回执，但回执总额与订单金额不一致，建议先补齐/修正回执后再进行「标记支付并生效」。</div>
+        @endif
+
         <form method="post" action="/admin/platform-orders/{{ $order->id }}/activate-subscription" onsubmit="return confirm('确认同步订阅？将根据该订单创建/续期订阅');">
             @csrf
             <button type="submit" @disabled(! $canActivate || $alreadySynced)>{{ $alreadySynced ? '已同步' : '同步订阅' }}</button>