增添優化功能

lib/expense/expense_model.dart

@@ -25,6 +25,7 @@ class ExpenseApply {
   final int? applyId;
   final DateTime applyDate;
   final String empNo;
+  final String? personCName; // new
   final String? rowData;    // 費用說明
   final String? picPath;    // 圖片檔名/路徑
   final String? expId;      // [新增] 類別 ID
@@ -62,6 +63,7 @@ class ExpenseApply {
     this.applyId,
     required this.applyDate,
     required this.empNo,
+    this.personCName,  //關聯擴充欄位
     this.rowData,
     this.picPath,
     this.expId,
@@ -76,6 +78,7 @@ class ExpenseApply {
       applyId: int.tryParse(json['ApplyId']?.toString() ?? ''),
       applyDate: json['ApplyDate'] != null ? DateTime.parse(json['ApplyDate']) : DateTime.now(),
       empNo: json['EmpNo'] as String? ?? '',
+      personCName: json['personCName'] as String? ?? '',  // new
       rowData: json['RowData'] as String?,
       picPath: json['PicPath'] as String?,
       expId: json['ExpId'] as String? ?? '',       // [新增]