initial commit

lib/models/work_day.dart

@@ -4,14 +4,14 @@ import 'work_interval.dart';
 class WorkDay {
   final DateTime date;
   final List<WorkInterval> intervals; // bis zu 5
-  final String? absenceType;          // Urlaub, Krank, …
+  final String? code;                 // GZ, K, U, SU, T oder null
   final int targetMinutes;            // Soll
 
   const WorkDay({
     required this.date,
     required this.intervals,
     required this.targetMinutes,
-    this.absenceType,
+    this.code,
   });
 
   int get workedMinutes => intervals.fold(0, (sum, i) => sum + i.minutes);