feat(admin): 仪表盘接入最近平台订单列表（收费闭环入口）

app/Http/Controllers/Admin/DashboardController.php

@@ -8,6 +8,7 @@ use App\Models\Admin;
 use App\Models\Order;
 use App\Models\Product;
 use App\Models\Merchant;
+use App\Models\PlatformOrder;
 use App\Models\User;
 use App\Support\CacheKeys;
 use Illuminate\Http\Request;
@@ -31,14 +32,37 @@ class DashboardController extends Controller
                 'users' => User::count(),
                 'products' => Product::count(),
                 'orders' => Order::count(),
+
+                // 收费中心（平台侧）
+                'platform_orders' => PlatformOrder::count(),
+                'platform_orders_unpaid_pending' => PlatformOrder::query()
+                    ->where('payment_status', 'unpaid')
+                    ->where('status', 'pending')
+                    ->count(),
+                'platform_orders_paid_pending' => PlatformOrder::query()
+                    ->where('payment_status', 'paid')
+                    ->where('status', 'pending')
+                    ->count(),
+                // 同步失败：沿用平台订单列表口径（meta.subscription_activation_error.message 存在即失败）
+                'platform_orders_sync_failed' => PlatformOrder::query()
+                    ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NOT NULL")
+                    ->count(),
+
+                // 站点治理
                 'active_merchants' => Merchant::query()->where('status', 'active')->count(),
                 'pending_orders' => Order::query()->where('status', 'pending')->count(),
             ]
         );
 
+        $recentPlatformOrders = PlatformOrder::query()
+            ->orderByDesc('id')
+            ->limit(5)
+            ->get();
+
         return view('admin.dashboard', [
             'adminName' => $admin->name,
             'stats' => $stats,
+            'recentPlatformOrders' => $recentPlatformOrders,
             'platformAdmin' => $admin,
             'cacheMeta' => [
                 'store' => config('cache.default'),