update address, cancel order

lib/features/orders/data/datasources/order_remote_datasource.dart

@@ -324,4 +324,48 @@ class OrderRemoteDataSource {
       throw Exception('Failed to get order detail: $e');
     }
   }
+
+  /// Update order address
+  ///
+  /// Calls: POST /api/method/building_material.building_material.api.sales_order.update
+  /// Body: {
+  ///   "name": "SAL-ORD-2025-00053",
+  ///   "shipping_address_name": "Công ty Tiến Nguyễn 2-thanh toán",
+  ///   "customer_address": "Nguyễn Lê Duy Ti-Billing"
+  /// }
+  /// Updates shipping and billing addresses for an existing order
+  Future<void> updateOrderAddress({
+    required String orderId,
+    required String shippingAddressName,
+    required String customerAddress,
+  }) async {
+    try {
+      await _dioClient.post(
+        '${ApiConstants.frappeApiMethod}${ApiConstants.updateOrder}',
+        data: {
+          'name': orderId,
+          'shipping_address_name': shippingAddressName,
+          'customer_address': customerAddress,
+        },
+      );
+    } catch (e) {
+      throw Exception('Failed to update order address: $e');
+    }
+  }
+
+  /// Cancel order
+  ///
+  /// Calls: POST /api/method/building_material.building_material.api.sales_order.cancel
+  /// Body: { "name": "SAL-ORD-2025-00054" }
+  /// Cancels an existing order (only allowed for "Chờ phê duyệt" status)
+  Future<void> cancelOrder(String orderId) async {
+    try {
+      await _dioClient.post(
+        '${ApiConstants.frappeApiMethod}${ApiConstants.cancelOrder}',
+        data: {'name': orderId},
+      );
+    } catch (e) {
+      throw Exception('Failed to cancel order: $e');
+    }
+  }
 }