feat: add push notification for new variant addition in PurchaseService to enhance user awareness

app/Services/Manage/PurchaseService.php

@@ -228,6 +228,13 @@ public function createVariantAndDraft(array $validated, User $user): array
 
         $price->setAttribute('images', MediaPresenter::collection($price, 'images'));
 
+        $this->pushNotificationService->sendToRoles(
+            '🆕 Varian Baru Ditambahkan',
+            "{$user->name} menambahkan varian \"{$price->variant}\" ke bahan baku \"{$rawMaterial->name}\".",
+            ['owner', 'developer', 'direktur'],
+            route('admin.master.raw_materials.index', ['search' => $rawMaterial->name]),
+        );
+
         return [
             'id' => $price->id,
             'variant' => $price->variant,