release 4.8.9

lib/model/entry.dart

@@ -10,6 +10,7 @@ class Entry {
   final Event event;
   final NewCategory category;
   final DateTime? date;
+  final int zekkenNumber;  // 新しく追加
   final String owner;
 
   Entry({
@@ -18,6 +19,7 @@ class Entry {
     required this.event,
     required this.category,
     required this.date,
+    required this.zekkenNumber,
     required this.owner,
   });
 
@@ -30,6 +32,7 @@ class Entry {
       date: json['date'] != null
           ? DateTime.tryParse(json['date'])
           : null,
+      zekkenNumber: json['zekken_number'],  // 新しく追加
       owner: json['owner'] is Map ? json['owner']['name'] ?? '' : json['owner'] ?? '',
     );
   }
@@ -41,6 +44,7 @@ class Entry {
       'event': event.toJson(),
       'category': category.toJson(),
       'date': date?.toIso8601String(),
+      'zekken_number': zekkenNumber,  // 新しく追加
       'owner': owner,
     };
   }