fix(platform): 平台订单创建页透传 lead_id 以维持线索联动

tests/Feature/AdminPlatformOrderCreateShouldKeepLeadIdTest.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformLead;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Arr;
+use Tests\TestCase;
+
+class AdminPlatformOrderCreateShouldKeepLeadIdTest 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_create_should_render_hidden_lead_id_input_when_present_in_query(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+
+        $plan = Plan::query()->create([
+            'code' => 'lead_id_create_order_plan',
+            'name' => '下单页lead_id透传测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $lead = PlatformLead::query()->create([
+            'name' => 'lead_id线索',
+            'mobile' => '13800000005',
+            'email' => 'lead5@example.com',
+            'company' => 'lead_id公司',
+            'source' => 'test',
+            'status' => 'new',
+            'plan_id' => $plan->id,
+            'meta' => ['merchant_id' => $merchant->id],
+        ]);
+
+        $url = '/admin/platform-orders/create?' . Arr::query([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'lead_id' => $lead->id,
+            'back' => '/admin/platform-leads',
+        ]);
+
+        $res = $this->get($url);
+        $res->assertOk();
+
+        $res->assertSee('name="lead_id"', false);
+        $res->assertSee('value="' . $lead->id . '"', false);
+    }
+}