feat(admin): batch activate from subscription show

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

@@ -75,6 +75,22 @@
             <a href="/admin/platform-orders?site_subscription_id={{ $subscription->id }}&syncable_only=1" class="muted">查看可同步订单</a>
         @endif
     </div>
+
+    <div class="mt-10">
+        <form method="post" action="/admin/platform-orders/batch-activate-subscriptions" onsubmit="return confirm('确认批量同步该订阅下“可同步”的订单？（仅处理：已支付+已生效+未同步）');">
+            @csrf
+            <input type="hidden" name="scope" value="filtered">
+            <input type="hidden" name="site_subscription_id" value="{{ $subscription->id }}">
+            <input type="hidden" name="syncable_only" value="1">
+            <label class="muted form-inline-row mb-8">
+                <span>本次最多处理</span>
+                <input type="number" name="limit" value="50" min="1" max="500" class="w-90">
+                <span>条（安全阀）</span>
+            </label>
+            <button type="submit">批量同步该订阅下可同步订单</button>
+        </form>
+        <div class="muted muted-xs mt-6">说明：该按钮等价于平台订单页的“批量同步订阅（当前筛选范围）”，已内置只处理可同步订单（已支付+已生效+未同步）。</div>
+    </div>
 </div>
 
 <div class="grid-4 mb-20">