extractValidoAte function
Implementation
String extractValidoAte(String fullText) {
final validoReg = RegExp(
r'(Valido ate|Válido até)\s*:?\s*(\d{2}[\/\-]\d{2}[\/\-]\d{4})',
caseSensitive: false,
);
final match = validoReg.firstMatch(fullText);
return match?.group(2)?.trim() ?? '';
}