Platform orders index: add clear subscription lock link

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

@@ -87,8 +87,17 @@
                         $selfWithoutBack
                     );
                 @endphp
+                @php
+                    // 清除订阅锁定：保留其它筛选上下文（例如 lead_id/keyword/back），但移除 site_subscription_id + page。
+                    $clearSubscriptionUrl = \App\Support\BackUrl::currentPathWithQuery([
+                        'site_subscription_id' => null,
+                        'page' => null,
+                    ], $safeBackForLinks);
+                @endphp
                 <a class="link" href="{!! $subShowUrl !!}">{{ $currentSubscription->subscription_no }}</a>
                 <span class="muted">（订阅ID：{{ $currentSubscription->id }}）</span>
+                <span class="muted">｜</span>
+                <a class="muted" href="{!! $clearSubscriptionUrl !!}">取消锁定订阅</a>
             </div>
             <div class="muted muted-xs">提示：本页快捷筛选会保留该订阅ID；右上角“新建平台订单”会自动预填订阅ID。</div>