增添優化功能

lib/leave/leave_model.dart

@@ -47,9 +47,9 @@ class Leave {
     this.billDate,
     required this.personId,
     required this.agentId,
-    this.agentName = '',
+    required this.agentName,
     required this.leaveType,
-    this.leaveTypeName = '',
+    required this.leaveTypeName,
     this.startTime,
     this.endTime,
     this.days = 0,
@@ -70,7 +70,7 @@ class Leave {
       billDate: json['billdate'] != null ? DateTime.tryParse(json['billdate']) : null,
       personId: json['personid'] as String? ?? '',
       agentId: json['agentid'] as String? ?? '',
-      agentName: json['agentname'] ?? '', /// 假設 API 會 Join 姓名
+      agentName: json['agentName'] ?? '', /// 假設 API 會 Join 姓名
       leaveType: json['leavetype'] as String? ?? '',
       // leaveTypeName: json['leavetype_name'] ?? json['leavetype'] ?? '',
       leaveTypeName: typeName, // 這裡現在保證有值