feat: 薪税管理批次表格增加绩效工资列

前端 BatchTab.tsx:
- 表头增加绩效工资列
- 表体渲染 performanceSalary 单元格
- 绩效工资加入可编辑字段列表

后端 payroll2.routes.ts:
- updateEntrySchema 增加 performanceSalary 字段
- 更新 entry 时接受前端传来的 performanceSalary 值

backend/src/routes/payroll2.routes.ts

@@ -575,6 +575,7 @@ router.post('/batches', async (req: AuthRequest, res: Response, next: NextFuncti
 // 编辑批次条目（计算依据项 + 社保公积金手动覆盖）
 const updateEntrySchema = z.object({
   baseSalary: z.number().optional(),
+  performanceSalary: z.number().optional(),
   overtimePay: z.number().optional(),
   allowance: z.number().optional(),
   deduction: z.number().optional(),
@@ -607,9 +608,9 @@ router.put('/batches/:batchId/entries/:employeeId', async (req: AuthRequest, res
       allowance: data.allowance ?? entry.allowance,
       deduction: data.deduction ?? entry.deduction,
       bonus: data.bonus ?? entry.bonus,
-      positionSalary: entry.positionSalary || undefined,
-      performanceSalary: entry.performanceSalary || undefined,
-      senioritySalary: entry.senioritySalary || undefined,
+      positionSalary: (data as any).positionSalary ?? entry.positionSalary ?? undefined,
+      performanceSalary: data.performanceSalary ?? entry.performanceSalary ?? undefined,
+      senioritySalary: (data as any).senioritySalary ?? entry.senioritySalary ?? undefined,
       transportAllowance: entry.transportAllowance || undefined,
       mealAllowance: entry.mealAllowance || undefined,
       housingAllowance: entry.housingAllowance || undefined,