feat(billing): renewals, coupons, VAT numbering, billing cycles and invoice payment tracking

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/Models/Service.php

@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use App\Models\Concerns\Markable;
+use App\Support\ServiceExpirySync;
 use App\Traits\LogsActivity;
 use Illuminate\Database\Eloquent\Concerns\HasUuids;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -25,6 +26,12 @@ class Service extends Model
                 $service->type = Product::query()->where('id', $service->product_id)->value('product_type');
             }
         });
+
+        static::saved(function (Service $service) {
+            if ($service->wasRecentlyCreated || $service->wasChanged(['expires_at', 'vm_id'])) {
+                ServiceExpirySync::toVmware($service);
+            }
+        });
     }
 
     protected $table = 'services';