feat(admin-dashboard): show renewal missing subscription hint in recent orders

tests/Feature/AdminDashboardRecentPlatformOrdersRenewalMissingSubscriptionShouldShowHintTest.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Admin;
+use App\Models\Merchant;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Arr;
+use Tests\TestCase;
+
+class AdminDashboardRecentPlatformOrdersRenewalMissingSubscriptionShouldShowHintTest 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_dashboard_recent_platform_orders_renewal_missing_subscription_should_show_hint(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchantId = (int) Merchant::query()->value('id');
+        $platformAdminId = (int) Admin::query()->where('email', 'platform.admin@demo.local')->value('id');
+
+        // 构造一条“续费单但缺 site_subscription_id”的高风险订单
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchantId,
+            'plan_id' => null,
+            'site_subscription_id' => null,
+            'created_by_admin_id' => $platformAdminId ?: null,
+            'order_no' => 'PO_DASH_RENEWAL_MISS_SUB_0001',
+            'order_type' => 'renewal',
+            'status' => 'pending',
+            'payment_status' => 'paid',
+            'payable_amount' => 9,
+            'paid_amount' => 9,
+            'meta' => [],
+        ]);
+
+        $res = $this->get('/admin');
+        $res->assertOk();
+
+        $res->assertSee('PO_DASH_RENEWAL_MISS_SUB_0001');
+        $res->assertSee('续费缺订阅', false);
+
+        $url = '/admin/platform-orders?' . Arr::query([
+            'renewal_missing_subscription' => '1',
+            'back' => '/admin',
+        ]);
+        $res->assertSee($url, false);
+
+        // 不应出现 &amp;back=，避免回跳断链
+        $res->assertDontSee('&amp;back=', false);
+    }
+}