feat: update app icon

lib/models/remote_command.dart

@@ -85,12 +85,32 @@ class SyncResponse {
   }
 }
 
+/// One line on a tab as shown in the dashboard, e.g. "10× Cola".
+class SnapshotTabItem {
+  final String productName;
+  final int quantity;
+  final int unitPriceInCents;
+
+  const SnapshotTabItem({
+    required this.productName,
+    required this.quantity,
+    required this.unitPriceInCents,
+  });
+
+  Map<String, dynamic> toJson() => {
+    'productName': productName,
+    'quantity': quantity,
+    'unitPriceInCents': unitPriceInCents,
+  };
+}
+
 class SnapshotTab {
   final String id;
   final String customerName;
   final int version;
   final int totalInCents;
   final int itemCount;
+  final List<SnapshotTabItem> items;
 
   const SnapshotTab({
     required this.id,
@@ -98,6 +118,7 @@ class SnapshotTab {
     required this.version,
     required this.totalInCents,
     required this.itemCount,
+    this.items = const [],
   });
 
   Map<String, dynamic> toJson() => {
@@ -106,6 +127,7 @@ class SnapshotTab {
     'version': version,
     'totalInCents': totalInCents,
     'itemCount': itemCount,
+    'items': items.map((item) => item.toJson()).toList(),
   };
 }