refactor: BackUrl 增加 currentPathQuickFilter 并复用到收费闭环列表页

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

@@ -59,33 +59,7 @@
     @php
         // 快捷筛选：仅保留“上下文”字段（站点/套餐/keyword/安全 back），避免把其它筛选条件叠加导致空结果
         $buildQuickFilterUrl = function (array $overrides) use ($safeBackForLinks) {
-            $path = '/' . ltrim(request()->path(), '/');
-
-            $contextKeys = [
-                'merchant_id' => 1,
-                'plan_id' => 1,
-                'keyword' => 1,
-            ];
-
-            $q = array_intersect_key(request()->query(), $contextKeys);
-
-            if ($safeBackForLinks !== '') {
-                $q['back'] = $safeBackForLinks;
-            }
-
-            foreach ($overrides as $k => $v) {
-                if ($v === null) {
-                    unset($q[$k]);
-                    continue;
-                }
-                $q[$k] = $v;
-            }
-
-            if (count($q) === 0) {
-                return $path;
-            }
-
-            return $path . '?' . \Illuminate\Support\Arr::query($q);
+            return \App\Support\BackUrl::currentPathQuickFilter(['merchant_id', 'plan_id', 'keyword'], $overrides, $safeBackForLinks);
         };
 
         // “全部”：清空筛选，但保留安全 back（用于返回来源页）