fix: AI风险预测员工下拉框显示完整身份证号区分同名员工

- 后端 /employees/list 接口返回解密后的完整身份证号
- 前端 AI风险预测通用模式和结构化模式员工下拉框显示 姓名（身份证号）

frontend/src/lib/api-services.ts

@@ -48,6 +48,7 @@ export interface EmployeeOption {
   phone?: string
   gender?: string
   status?: string
+  idCardNo?: string
 }
 
 export const employeeApi = {

frontend/src/pages/ai-assistant/PredictTab.tsx

@@ -557,7 +557,7 @@ export function PredictTab() {
               <Label className="whitespace-nowrap">员工</Label>
               <Select value={employeeId} onChange={(e) => setEmployeeId(e.target.value)}>
                 <option value="">选择员工</option>
-                {(employees || []).map((e: any) => <option key={e.id} value={e.id}>{e.name}</option>)}
+                {(employees || []).map((e: any) => <option key={e.id} value={e.id}>{e.name}（{e.idCardNo || e.department}）</option>)}
               </Select>
             </div>
           )}
@@ -621,7 +621,7 @@ export function PredictTab() {
                   <Label>涉及员工</Label>
                   <Select value={structEmployeeName} onChange={(e) => handleStructEmployeeChange(e.target.value)}>
                     <option value="">选择员工（可选）</option>
-                    {(employees || []).map((e: any) => <option key={e.id} value={e.name}>{e.name}（{e.department}）</option>)}
+                    {(employees || []).map((e: any) => <option key={e.id} value={e.name}>{e.name}（{e.idCardNo || e.department}）</option>)}
                   </Select>
                   {employeeSpecialStatus && (
                     <div className="mt-1 flex items-center gap-1 text-xs text-amber-700 bg-amber-50 border border-amber-200 px-2 py-1 rounded">