Tuned ui to support ecommerce product catalogue and purchases.

kifi-app/lib/features/inventory/domain/inventory_item.dart

@@ -21,6 +21,8 @@ class InventoryItem {
   final int? vendorId;
   final int? branchId;
   final String? purchaseRef;
+  final String? salesRef;
+  final double? saleRate;
   final String? photoUrl;
   final String? status;
   final DateTime? createdAt;
@@ -48,6 +50,8 @@ class InventoryItem {
     this.vendorId,
     this.branchId,
     this.purchaseRef,
+    this.salesRef,
+    this.saleRate,
     this.photoUrl,
     this.status,
     this.createdAt,
@@ -77,6 +81,8 @@ class InventoryItem {
       vendorId: json['vendorId'],
       branchId: json['branchId'],
       purchaseRef: json['purchaseRef'],
+      salesRef: json['salesRef'] ?? json['sales_ref'],
+      saleRate: (json['saleRate'] ?? json['sale_rate'])?.toDouble(),
       photoUrl: json['photoUrl'] ?? json['photo_url'],
       status: json['status'],
       createdAt: json['createdAt'] != null ? DateTime.parse(json['createdAt']) : null,