update product detail

lib/features/products/domain/entities/product.dart

@@ -20,7 +20,7 @@ class Product {
     required this.imageCaptions,
     this.customLink360,
     required this.specifications,
-    this.category,
+    this.itemGroupName,
     this.brand,
     this.unit,
     this.conversionOfSm,
@@ -58,8 +58,8 @@ class Product {
   /// Product specifications
   final Map<String, dynamic> specifications;
 
-  /// Category name
-  final String? category;
+  /// Item group name (from ERPNext)
+  final String? itemGroupName;
 
   /// Brand name
   final String? brand;
@@ -97,8 +97,8 @@ class Product {
   /// Alias for primaryImage (used by UI widgets)
   String get imageUrl => primaryImage ?? '';
 
-  /// Category ID (alias for category field)
-  String? get categoryId => category;
+  /// Category ID (alias for itemGroupName field)
+  String? get categoryId => itemGroupName;
 
   /// Check if product has 360 view
   bool get has360View => customLink360 != null && customLink360!.isNotEmpty;
@@ -152,7 +152,7 @@ class Product {
     Map<String, String>? imageCaptions,
     String? customLink360,
     Map<String, dynamic>? specifications,
-    String? category,
+    String? itemGroupName,
     String? brand,
     String? unit,
     double? conversionOfSm,
@@ -173,7 +173,7 @@ class Product {
       imageCaptions: imageCaptions ?? this.imageCaptions,
       customLink360: customLink360 ?? this.customLink360,
       specifications: specifications ?? this.specifications,
-      category: category ?? this.category,
+      itemGroupName: itemGroupName ?? this.itemGroupName,
       brand: brand ?? this.brand,
       unit: unit ?? this.unit,
       conversionOfSm: conversionOfSm ?? this.conversionOfSm,
@@ -189,7 +189,7 @@ class Product {
   @override
   String toString() {
     return 'Product(productId: $productId, name: $name, basePrice: $basePrice, '
-        'category: $category, isActive: $isActive, isFeatured: $isFeatured)';
+        'itemGroupName: $itemGroupName, isActive: $isActive, isFeatured: $isFeatured)';
   }
 
   @override
@@ -201,7 +201,7 @@ class Product {
         other.name == name &&
         other.description == description &&
         other.basePrice == basePrice &&
-        other.category == category &&
+        other.itemGroupName == itemGroupName &&
         other.brand == brand &&
         other.unit == unit &&
         other.isActive == isActive &&
@@ -216,7 +216,7 @@ class Product {
       name,
       description,
       basePrice,
-      category,
+      itemGroupName,
       brand,
       unit,
       isActive,