scan to list working fine

lib/utils/money.dart

@@ -0,0 +1,28 @@
+/// Price formatting and parsing for receipt amounts.
+library;
+
+/// Matches a price that is the entire line, e.g. `2,09` or `-2.00`.
+final priceOnlyPattern = RegExp(r'^-?\d+[.,]\d{2}$');
+
+/// Name (optional) plus a price at the end of the line.
+final trailingPricePattern = RegExp(r'^(.*?)\s+(-?\d+[.,]\d{2})$');
+
+/// `2 x 1.50` or `2 X 1,50 3,00` (quantity, unit price, optional line total).
+final quantityPattern = RegExp(
+  r'^(\d+)\s*[xX×]\s*(-?\d+[.,]\d{2})(?:\s+(-?\d+[.,]\d{2}))?$',
+);
+
+bool isPriceOnly(String line) => priceOnlyPattern.hasMatch(line);
+
+double? tryParsePrice(String raw) {
+  final cleaned = raw
+      .trim()
+      .replaceAll('€', '')
+      .replaceAll(RegExp(r'\s'), '')
+      .replaceAll(',', '.');
+  return double.tryParse(cleaned);
+}
+
+String formatEuro(double value) => '€ ${value.toStringAsFixed(2)}';
+
+double roundMoney(double value) => (value * 100).round() / 100;