update order detail

lib/features/products/data/models/product_model.dart

@@ -28,7 +28,6 @@ class ProductModel extends HiveObject {
     this.specifications,
     this.itemGroupName,
     this.brand,
-    this.unit,
     this.conversionOfSm,
     this.introAttributes,
     required this.isActive,
@@ -83,10 +82,6 @@ class ProductModel extends HiveObject {
   @HiveField(10)
   final String? brand;
 
-  /// Unit of measurement (m2, box, piece, etc.)
-  @HiveField(11)
-  final String? unit;
-
   /// Conversion factor for Square Meter UOM (tiles per m²)
   /// Used to calculate: Số viên = Số lượng × conversionOfSm
   @HiveField(17)
@@ -204,7 +199,6 @@ class ProductModel extends HiveObject {
           : null,
       itemGroupName: json['item_group_name'] as String?,
       brand: json['brand'] as String?,
-      unit: json['currency'] as String?, // Use currency as unit for now
       conversionOfSm: json['conversion_of_sm'] != null
           ? (json['conversion_of_sm'] as num).toDouble()
           : null,
@@ -260,7 +254,6 @@ class ProductModel extends HiveObject {
       specifications: null,
       itemGroupName: json['item_group_name'] as String?,
       brand: null, // Not provided by wishlist API
-      unit: json['currency'] as String? ?? 'm²',
       conversionOfSm: json['conversion_of_sm'] != null
           ? (json['conversion_of_sm'] as num).toDouble()
           : null,
@@ -291,7 +284,6 @@ class ProductModel extends HiveObject {
           : null,
       'item_group_name': itemGroupName,
       'brand': brand,
-      'unit': unit,
       'conversion_of_sm': conversionOfSm,
       'intro_attributes': introAttributes != null
           ? jsonDecode(introAttributes!)
@@ -406,7 +398,6 @@ class ProductModel extends HiveObject {
     String? specifications,
     String? itemGroupName,
     String? brand,
-    String? unit,
     double? conversionOfSm,
     String? introAttributes,
     bool? isActive,
@@ -427,7 +418,6 @@ class ProductModel extends HiveObject {
       specifications: specifications ?? this.specifications,
       itemGroupName: itemGroupName ?? this.itemGroupName,
       brand: brand ?? this.brand,
-      unit: unit ?? this.unit,
       conversionOfSm: conversionOfSm ?? this.conversionOfSm,
       introAttributes: introAttributes ?? this.introAttributes,
       isActive: isActive ?? this.isActive,
@@ -471,7 +461,6 @@ class ProductModel extends HiveObject {
       specifications: specificationsMap ?? {},
       itemGroupName: itemGroupName,
       brand: brand,
-      unit: unit,
       conversionOfSm: conversionOfSm,
       introAttributes: introAttributesList,
       isActive: isActive,

lib/features/products/data/models/product_model.g.dart

@@ -28,7 +28,6 @@ class ProductModelAdapter extends TypeAdapter<ProductModel> {
       specifications: fields[8] as String?,
       itemGroupName: fields[9] as String?,
       brand: fields[10] as String?,
-      unit: fields[11] as String?,
       conversionOfSm: (fields[17] as num?)?.toDouble(),
       introAttributes: fields[18] as String?,
       isActive: fields[12] as bool,
@@ -42,7 +41,7 @@ class ProductModelAdapter extends TypeAdapter<ProductModel> {
   @override
   void write(BinaryWriter writer, ProductModel obj) {
     writer
-      ..writeByte(19)
+      ..writeByte(18)
       ..writeByte(0)
       ..write(obj.productId)
       ..writeByte(1)
@@ -65,8 +64,6 @@ class ProductModelAdapter extends TypeAdapter<ProductModel> {
       ..write(obj.itemGroupName)
       ..writeByte(10)
       ..write(obj.brand)
-      ..writeByte(11)
-      ..write(obj.unit)
       ..writeByte(12)
       ..write(obj.isActive)
       ..writeByte(13)

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

@@ -22,7 +22,6 @@ class Product {
     required this.specifications,
     this.itemGroupName,
     this.brand,
-    this.unit,
     this.conversionOfSm,
     this.introAttributes,
     required this.isActive,
@@ -64,9 +63,6 @@ class Product {
   /// Brand name
   final String? brand;
 
-  /// Unit of measurement (e.g., "m²", "viên", "hộp")
-  final String? unit;
-
   /// Conversion factor for Square Meter UOM (tiles per m²)
   /// Used to calculate: Số viên = Số lượng × conversionOfSm
   final double? conversionOfSm;
@@ -154,7 +150,6 @@ class Product {
     Map<String, dynamic>? specifications,
     String? itemGroupName,
     String? brand,
-    String? unit,
     double? conversionOfSm,
     List<Map<String, String>>? introAttributes,
     bool? isActive,
@@ -175,7 +170,6 @@ class Product {
       specifications: specifications ?? this.specifications,
       itemGroupName: itemGroupName ?? this.itemGroupName,
       brand: brand ?? this.brand,
-      unit: unit ?? this.unit,
       conversionOfSm: conversionOfSm ?? this.conversionOfSm,
       introAttributes: introAttributes ?? this.introAttributes,
       isActive: isActive ?? this.isActive,
@@ -203,7 +197,6 @@ class Product {
         other.basePrice == basePrice &&
         other.itemGroupName == itemGroupName &&
         other.brand == brand &&
-        other.unit == unit &&
         other.isActive == isActive &&
         other.isFeatured == isFeatured &&
         other.erpnextItemCode == erpnextItemCode;
@@ -218,7 +211,6 @@ class Product {
       basePrice,
       itemGroupName,
       brand,
-      unit,
       isActive,
       isFeatured,
       erpnextItemCode,

lib/features/products/presentation/pages/product_detail_page.dart

@@ -156,7 +156,7 @@ class _ProductDetailPageState extends ConsumerState<ProductDetailPage> {
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
         content: Text(
-          'Đã thêm $_quantity ${product.unit} ${product.name} vào giỏ hàng!',
+          'Đã thêm $_quantity m² ${product.name} vào giỏ hàng!',
         ),
         duration: const Duration(seconds: 2),
         action: SnackBarAction(
@@ -246,7 +246,7 @@ class _ProductDetailPageState extends ConsumerState<ProductDetailPage> {
                 right: 0,
                 child: StickyActionBar(
                   quantity: _quantity,
-                  unit: product.unit ?? 'm²',
+                  unit: 'm²',
                   conversionOfSm: product.conversionOfSm,
                   uomFromIntroAttributes: product.getIntroAttribute('UOM'),
                   onIncrease: _increaseQuantity,

lib/features/products/presentation/widgets/product_card.dart

@@ -220,7 +220,7 @@ class ProductCard extends ConsumerWidget {
 
                   // Price
                   Text(
-                    '${_formatPrice(product.effectivePrice)}/${product.unit}',
+                    '${_formatPrice(product.effectivePrice)}/m²',
                     style: const TextStyle(
                       fontSize: 16.0,
                       fontWeight: FontWeight.bold,

lib/features/products/presentation/widgets/product_detail/product_info_section.dart

@@ -61,7 +61,7 @@ class ProductInfoSection extends StatelessWidget {
             children: [
               // Current Price
               Text(
-                '${_formatPrice(product.basePrice)}/${product.unit ?? 'm²'}',
+                '${_formatPrice(product.basePrice)}/m²',
                 style: const TextStyle(
                   fontSize: 22,
                   fontWeight: FontWeight.w700,