fix bug 2

app/Services/ProductPriceSyncService.php

@@ -3,6 +3,7 @@
 namespace App\Services;
 
 use App\Models\Product;
+use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Log;
@@ -61,7 +62,7 @@ class ProductPriceSyncService
 
         $basePrice = $display->resolveAppBasePrice();
         if ($basePrice <= 0) {
-            return false;
+            return $this->restoreAppProductsFromHistorical($products);
         }
 
         $synced = false;
@@ -73,6 +74,30 @@ class ProductPriceSyncService
         return $synced;
     }
 
+    /** provider صفر ولی use_last_price_if_zero — بازیابی از جدول prices به products.price */
+    private function restoreAppProductsFromHistorical(Collection $products): bool
+    {
+        $historical = app(ProductDisplayPriceService::class)->resolveHistoricalBasePrice();
+        if ($historical <= 0) {
+            return false;
+        }
+
+        $synced = false;
+        foreach ($products as $product) {
+            if (!Product::hasUseLastPriceIfZeroColumn() || !($product->use_last_price_if_zero ?? false)) {
+                continue;
+            }
+            if ((int) ($product->price ?? 0) > 0) {
+                continue;
+            }
+
+            ProductPriceService::syncFromReference($product, $historical, 0);
+            $synced = true;
+        }
+
+        return $synced;
+    }
+
     /** فید قدیمی — reading_method به شکل name (سازگاری با پروژه‌های قدیمی) */
     private function syncFromLegacyFeed(bool $forceRefresh = false): bool
     {