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lib/models/work_day.dart

@@ -1,11 +1,12 @@
 import 'package:flutter/material.dart';
+import '../utils/work_time.dart';
 import 'work_interval.dart';
 
 class WorkDay {
   final DateTime date;
-  final List<WorkInterval> intervals; // bis zu 5
-  final String? code;                 // GZ, K, U, SU, T oder null
-  final int targetMinutes;            // Soll
+  final List<WorkInterval> intervals;
+  final int targetMinutes;
+  final String? code; // 'G','U','SU','K','T' oder null
 
   const WorkDay({
     required this.date,
@@ -14,6 +15,6 @@ class WorkDay {
     this.code,
   });
 
-  int get workedMinutes => intervals.fold(0, (sum, i) => sum + i.minutes);
-  int get diffMinutes => workedMinutes - targetMinutes;
+  /// Effektive Ist-Zeit mit 30-Minuten-Pausenregel (>6h) und Lückenanrechnung
+  int get workedMinutes => effectiveWorkedMinutes(intervals);
 }