ui(site-subscriptions): collapse filters by default in attach order mode

tests/Feature/AdminSiteSubscriptionIndexAttachOrderModeShouldCollapseFiltersByDefaultTest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionIndexAttachOrderModeShouldCollapseFiltersByDefaultTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_attach_order_mode_should_not_open_filters_details_by_default(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/site-subscriptions?attach_order_id=123&attach_back=%2Fadmin%2Fplatform-orders%2F123');
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+
+        // attach_order 模式：filters-card 不应默认 open（减少干扰）
+        $this->assertStringContainsString('data-storage-key="admin.site_subscriptions.filters"', $html);
+
+        // 简单但有效：断言该 details 标签不含 open 属性
+        $this->assertStringNotContainsString('data-storage-key="admin.site_subscriptions.filters" open', $html);
+    }
+}