debug(invoice): 添加调试日志并优化员工账号获取逻辑

- 在用户列表获取后添加调试日志输出
- 实现通过employeeId从用户列表中获取员工账号的逻辑
- 添加getUserAccountById方法的调试日志
- 优化发票管理中的员工账号字段赋值逻辑
- 添加空值检查和调试信息输出

openhis-ui-vue3/src/views/basicmanage/InvoiceManagement/index.vue

@@ -265,7 +265,8 @@ export default {
           employeeAccount: user.userName, // 使用用户账号作为员工账号
           status: user.status // 0: 启用(管理员), 1: 禁用(普通人员)
         }));
-        console.log('获取到的用户列表:', this.userList);
+        console.log('[DEBUG] 获取到的用户列表:', this.userList);
+        console.log('[DEBUG] 第一条用户数据:', this.userList[0]);
         return Promise.resolve();
       }).catch(error => {
         console.error('获取用户列表失败:', error);
@@ -327,7 +328,14 @@ export default {
                 ((record.invoicingStaffId || record.employeeId) ? 
                   this.getUserNameById(record.invoicingStaffId || record.employeeId) : '-'),
               employeeId: record.invoicingStaffId || record.employeeId || '',
-              employeeAccount: record.employeeAccount || '', // 员工账号字段
+              // 员工账号字段：通过employeeId从用户列表中获取
+              employeeAccount: (record.employeeAccount) ? record.employeeAccount : 
+                (() => {
+                  const empId = record.invoicingStaffId || record.employeeId;
+                  const account = this.getUserAccountById(empId);
+                  console.log(`[DEBUG] 查找员工账号: employeeId=${empId}, 找到账号=${account}, userList长度=${this.userList.length}`);
+                  return account;
+                })(),
               date: record.billBusDate || record.createDate ? 
                 new Date(record.billBusDate || record.createDate).toISOString().split('T')[0] : '',
               startNum: record.startNum || record.beginNumber || '',
@@ -481,8 +489,12 @@ export default {
     
     // 根据员工ID获取用户账号
     getUserAccountById(employeeId) {
-      if (!employeeId) return '';
+      if (!employeeId) {
+        console.log(`[DEBUG] getUserAccountById: employeeId为空，返回空字符串`);
+        return '';
+      }
       const user = this.userList.find(u => String(u.employeeId) === String(employeeId));
+      console.log(`[DEBUG] getUserAccountById: 查找employeeId=${employeeId}, 匹配结果=`, user);
       return user ? user.employeeAccount : '';
     },