update cart/favorite

lib/features/cart/domain/entities/cart_item.dart

@@ -6,7 +6,7 @@ library;
 /// Cart Item Entity
 ///
 /// Contains item-level information:
-/// - Product reference
+/// - Product reference and basic info
 /// - Quantity
 /// - Pricing
 class CartItem {
@@ -31,6 +31,15 @@ class CartItem {
   /// Timestamp when item was added
   final DateTime addedAt;
 
+  /// Product name from cart API
+  final String? itemName;
+
+  /// Product image URL from cart API
+  final String? image;
+
+  /// Conversion factor (m² to tiles) from cart API
+  final double? conversionOfSm;
+
   const CartItem({
     required this.cartItemId,
     required this.cartId,
@@ -39,6 +48,9 @@ class CartItem {
     required this.unitPrice,
     required this.subtotal,
     required this.addedAt,
+    this.itemName,
+    this.image,
+    this.conversionOfSm,
   });
 
   /// Calculate subtotal (for verification)
@@ -53,6 +65,9 @@ class CartItem {
     double? unitPrice,
     double? subtotal,
     DateTime? addedAt,
+    String? itemName,
+    String? image,
+    double? conversionOfSm,
   }) {
     return CartItem(
       cartItemId: cartItemId ?? this.cartItemId,
@@ -62,6 +77,9 @@ class CartItem {
       unitPrice: unitPrice ?? this.unitPrice,
       subtotal: subtotal ?? this.subtotal,
       addedAt: addedAt ?? this.addedAt,
+      itemName: itemName ?? this.itemName,
+      image: image ?? this.image,
+      conversionOfSm: conversionOfSm ?? this.conversionOfSm,
     );
   }
 

lib/features/cart/domain/repositories/cart_repository.dart

@@ -25,6 +25,7 @@ abstract class CartRepository {
   /// [itemIds] - Product ERPNext item codes
   /// [quantities] - Quantities for each item
   /// [prices] - Unit prices for each item
+  /// [conversionFactors] - Conversion factors (m² to tiles) for each item
   ///
   /// Returns true if successful.
   /// Throws exceptions on failure.
@@ -32,6 +33,7 @@ abstract class CartRepository {
     required List<String> itemIds,
     required List<double> quantities,
     required List<double> prices,
+    List<double?>? conversionFactors,
   });
 
   /// Remove items from cart
@@ -55,6 +57,7 @@ abstract class CartRepository {
   /// [itemId] - Product ERPNext item code
   /// [quantity] - New quantity
   /// [price] - Unit price
+  /// [conversionFactor] - Conversion factor (m² to tiles)
   ///
   /// Returns true if successful.
   /// Throws exceptions on failure.
@@ -62,6 +65,7 @@ abstract class CartRepository {
     required String itemId,
     required double quantity,
     required double price,
+    double? conversionFactor,
   });
 
   /// Clear all items from cart