Umstellung auf UTC Timestamp

lib/tools/util.dart

@@ -18,6 +18,13 @@ import '../Tools/colored_safe_area.dart';
 class Util {
   static late SharedPreferences prefs;
 
+  // DateTime → UTC Unix timestamps
+  static int toUnixMillisUtc(DateTime dt) => dt.toUtc().millisecondsSinceEpoch;
+  static int nowUnixMillisUtc() => DateTime.now().toUtc().millisecondsSinceEpoch;
+  // Optional: Unix seconds
+  static int toUnixSecondsUtc(DateTime dt) => dt.toUtc().millisecondsSinceEpoch ~/ 1000;
+
+
   static init() async {
     prefs = await SharedPreferences.getInstance();
   }
@@ -427,7 +434,7 @@ Future<void> showMessageDialog(BuildContext context, String title, String messag
 
 class DecimalTextInputFormatter extends TextInputFormatter {
   int maxLength;
-  
+
   int decimalPlaces;
 
   DecimalTextInputFormatter({required this.maxLength, required this.decimalPlaces});
@@ -440,9 +447,9 @@ class DecimalTextInputFormatter extends TextInputFormatter {
     if (text != "") {
       RegExp regExp;
       if (decimalPlaces > 0) {
-        regExp = RegExp(r'[0-9]+[,]{0,1}[0-9]{0,${' + decimalPlaces.toString() + '}');
+        regExp = RegExp(r'[0-9]+[,]{0,1}[0-9]{0,${decimalPlaces}');
       } else {
-        regExp = RegExp(r'[0-9]{0,' + maxLength.toString() +'}');
+        regExp = RegExp(r'[0-9]{0,${maxLength}}');
       }
       filteredText = regExp.stringMatch(text);
     }