feat: 绩效工资改为手动获取+按考核系数着色

后端:
- 建立批次时绩效工资填0，不自动带出
- 获取绩效工资接口返回 details(grade/coefficient/performanceSalary)
- 无考核记录时系数为1.0（绩效工资=基数全额）

前端:
- 存储获取绩效工资返回的 details 到 perfDetails state
- 绩效工资列按系数着色：A级(1.2)绿色/C级(0.8)橙色/D级(0.6)红色
- B级(1.0)和无考核正常色，0值灰色
- hover显示考核等级和系数

backend/src/routes/payroll2.routes.ts

@@ -493,11 +493,11 @@ router.post('/batches', async (req: AuthRequest, res: Response, next: NextFuncti
         } else if (prevPayslip) {
           // 非试用期：优先用上月工资条的基本工资（保持薪资连续性）
           baseSalary = prevPayslip.baseSalary
-          performanceSalary = prevPayslip.performanceSalary || 0
+          // 绩效工资不自动带出，需手动点"获取绩效工资"按钮
         } else if (empBaseSalary > 0 || empPerformanceSalary > 0) {
           // 新数据：有工资结构
           baseSalary = empBaseSalary
-          performanceSalary = empPerformanceSalary
+          // 绩效工资不自动带出，需手动点"获取绩效工资"按钮
         } else if (emp.monthlySalary) {
           // 旧数据兼容：回退到 monthlySalary
           try { baseSalary = Number(decrypt(emp.monthlySalary)) || 0 } catch { baseSalary = Number(emp.monthlySalary) || 0 }
@@ -515,7 +515,7 @@ router.post('/batches', async (req: AuthRequest, res: Response, next: NextFuncti
           performanceSalary = 0
         } else if (empBaseSalary > 0 || empPerformanceSalary > 0) {
           baseSalary = empBaseSalary
-          performanceSalary = empPerformanceSalary
+          // 绩效工资不自动带出，需手动点"获取绩效工资"按钮
         } else if (emp.monthlySalary && mode === 'custom') {
           // custom 模式旧数据兼容
           try { baseSalary = Number(decrypt(emp.monthlySalary)) || 0 } catch { baseSalary = Number(emp.monthlySalary) || 0 }
@@ -840,11 +840,13 @@ router.post('/batches/:batchId/fetch-performance', async (req: AuthRequest, res:
 
     let filled = 0
     let totalAmount = 0
+    const details: { employeeId: string; grade: string | null; coefficient: number; performanceSalary: number }[] = []
     for (const entry of entries) {
       const basePerfSalary = empPerfSalaryMap.get(entry.employeeId) || 0
       if (basePerfSalary <= 0) continue // 绩效工资基数为0则跳过
 
       const perfRecord = perfMap.get(entry.employeeId)
+      const grade = perfRecord?.grade || null
       const coefficient = perfRecord ? (gradeCoefficients[perfRecord.grade] || 1.0) : 1.0
       const calculatedPerfSalary = Math.round(basePerfSalary * coefficient * 100) / 100
 
@@ -853,6 +855,7 @@ router.post('/batches/:batchId/fetch-performance', async (req: AuthRequest, res:
         data: { performanceSalary: calculatedPerfSalary },
       })
       await recalcEntry(orgId, batchId, batch.month, batch.type, entry.id, entry.employeeId)
+      details.push({ employeeId: entry.employeeId, grade, coefficient, performanceSalary: calculatedPerfSalary })
       filled++
       totalAmount += calculatedPerfSalary
     }
@@ -865,6 +868,7 @@ router.post('/batches/:batchId/fetch-performance', async (req: AuthRequest, res:
       data: {
         filled,
         totalAmount: Math.round(totalAmount * 100) / 100,
+        details,
         message: filled > 0
           ? `已填充 ${filled} 人绩效工资，合计 ¥${Math.round(totalAmount * 100) / 100}${performanceRecords.length > 0 ? `（${performanceRecords.length} 人有考核记录）` : '（无考核记录，按系数1.0计算）'}`
           : '无绩效工资数据（员工未设置绩效工资基数）',