tests(platform-orders): add guard for created-at range quick links

tests/Feature/AdminPlatformOrderCreatedAtRangeQuickLinksShouldRenderTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderCreatedAtRangeQuickLinksShouldRenderTest 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_platform_orders_created_at_range_quick_links_should_render_and_keep_safe_back(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/platform-orders?back=%2Fadmin&payment_status=paid');
+        $res->assertOk();
+
+        $res->assertSee('data-role="platform-orders-created-range-quick-links"', false);
+
+        $res->assertSee('data-role="po-created-range-today"', false);
+        $res->assertSee('data-role="po-created-range-7d"', false);
+        $res->assertSee('data-role="po-created-range-30d"', false);
+        $res->assertSee('data-role="po-created-range-clear"', false);
+
+        // back 必须保留且不应被 escape 成 &amp;back
+        $res->assertSee('back=%2Fadmin', false);
+        $res->assertDontSee('&amp;back=', false);
+
+        // 应保留原有筛选上下文（例如 payment_status=paid）
+        $res->assertSee('payment_status=paid', false);
+    }
+}