fix(admin): 平台订单列表新建入口保留 lead_id 上下文

tests/Feature/AdminPlatformOrderIndexCreateOrderLinkKeepsLeadIdTest.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Arr;
+use Tests\TestCase;
+
+class AdminPlatformOrderIndexCreateOrderLinkKeepsLeadIdTest 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_index_create_order_link_should_keep_lead_id_when_present_in_filters(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $currentUrl = '/admin/platform-orders?' . Arr::query([
+            'lead_id' => 12,
+            'payment_status' => 'paid',
+            'back' => '/admin/platform-leads',
+        ]);
+
+        $res = $this->get($currentUrl);
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+        preg_match_all('/href="([^"]+)"/', $html, $m);
+        $hrefs = $m[1] ?? [];
+
+        $createLinks = array_values(array_filter($hrefs, fn ($u) => str_contains($u, '/admin/platform-orders/create?')));
+        $this->assertNotEmpty($createLinks, '未找到“新建平台订单”链接');
+
+        $parts = parse_url($createLinks[0]);
+        parse_str($parts['query'] ?? '', $q);
+
+        $this->assertSame('12', (string) ($q['lead_id'] ?? ''));
+    }
+}