feat: 发薪批次表格动态化 - 根据薪酬模板动态生成列

- schema: BatchEntry 增加 extraItems Json 字段存储自定义模板项
- calcBatchEntry: 新增 extraItems 参数，合并自定义 INPUT 项取值
- 后端编辑接口: 动态校验自定义字段，预置字段走固定列，自定义走 extraItems
- 所有 calcBatchEntry 调用处传入并写回 extraItems
- 前端表头/单元格从 templateItems 动态生成，排除 netPay 重复列
- 前端 saveEdit 动态化: 预置字段走固定列，自定义字段走 extraItems
- renderCell 支持从 extraItems 取值
- 表格列左右锁定: 员工/合同类型左锁，实发/递延/风险/操作右锁
- 合理列宽 + 横向滚动 + hover 效果

backend/src/services/payroll.service.ts

@@ -401,9 +401,10 @@ export async function calcBatchEntry(
   orgId: string,
   employeeId: string,
   month: string,
-  inputs: { baseSalary: number; overtimePay: number; allowance: number; deduction: number; bonus: number; positionSalary?: number; performanceSalary?: number; senioritySalary?: number; transportAllowance?: number; mealAllowance?: number; housingAllowance?: number; communicationAllowance?: number; otherDeduction?: number },
+  inputs: { baseSalary: number; overtimePay: number; allowance: number; deduction: number; bonus: number; positionSalary?: number; performanceSalary?: number; senioritySalary?: number; transportAllowance?: number; mealAllowance?: number; housingAllowance?: number; communicationAllowance?: number; otherDeduction?: number; [key: string]: any },
   batchType: string = 'REGULAR',
   options?: { skipSocial?: boolean; overrideSocial?: { socialEmp?: number; socialOrg?: number; housingEmp?: number; housingOrg?: number }; prevDeferred?: { socialEmp?: number; housingEmp?: number; minWage?: number } },
+  extraItems?: Record<string, number> | null,
 ) {
   const employee = await prisma.employee.findFirst({
     where: { id: employeeId, orgId },
@@ -469,10 +470,10 @@ export async function calcBatchEntry(
     _socialCalculated: false,
   }
 
-  // 1. 初始化输入项
+  // 1. 初始化输入项：先从固定列 inputs 取，再从 extraItems 补充自定义项
   for (const item of templateItems) {
     if (item.type === 'INPUT') {
-      ctx.values[item.code] = (inputs as any)[item.code] || 0
+      ctx.values[item.code] = (inputs as any)[item.code] ?? (extraItems?.[item.code] ?? 0)
     }
   }
 
@@ -601,6 +602,15 @@ export async function calcBatchEntry(
     }
   }
 
+  // 提取非预置项的计算结果到 extraItems
+  const presetCodes = new Set(DEFAULT_ITEMS.map(i => i.code))
+  const resultExtraItems: Record<string, number> = {}
+  for (const item of templateItems) {
+    if (!presetCodes.has(item.code) && ctx.values[item.code] !== undefined) {
+      resultExtraItems[item.code] = Math.round((ctx.values[item.code] || 0) * 100) / 100
+    }
+  }
+
   return {
     socialEmp: Math.round(socialEmp * 100) / 100,
     socialOrg: Math.round(socialOrg * 100) / 100,
@@ -627,6 +637,7 @@ export async function calcBatchEntry(
     prevDeferredSocialEmp: options?.prevDeferred?.socialEmp || 0,
     prevDeferredHousingEmp: options?.prevDeferred?.housingEmp || 0,
     prevDeferredMinWage,
+    extraItems: resultExtraItems,
   }
 }