feat: 绩效工资两行显示+等级系数着色

后端: 批次详情接口附加 perfGrade/perfCoefficient 到每个 entry
前端: 绩效工资列改为两行显示，上行金额，下行等级·系数
- A级(1.2)绿色, C级(0.8)橙色, D级(0.6)红色, B级(1.0)默认色
- 数据从 batch detail 接口获取，刷新不丢失

backend/src/routes/payroll2.routes.ts

@@ -292,12 +292,31 @@ router.get('/batches/:id', async (req: AuthRequest, res: Response, next: NextFun
       },
     })
     if (!rawBatch) return res.status(404).json({ success: false, error: { code: 'NOT_FOUND', message: '批次不存在' } })
+
+    // 查询批次月份的绩效记录，附加到 entry 上
+    const perfRecords = await prisma.performanceRecord.findMany({
+      where: { orgId: req.user!.orgId, period: rawBatch.month, periodType: 'MONTHLY' },
+      select: { employeeId: true, grade: true, score: true },
+    })
+    const gradeCoefficients: Record<string, number> = { A: 1.2, B: 1.0, C: 0.8, D: 0.6 }
+    const perfMap = new Map<string, { grade: string; coefficient: number }>()
+    for (const r of perfRecords) {
+      if (!perfMap.has(r.employeeId)) {
+        perfMap.set(r.employeeId, { grade: r.grade, coefficient: gradeCoefficients[r.grade] || 1.0 })
+      }
+    }
+
     const batch = {
       ...rawBatch,
-      entries: rawBatch.entries.map((e: any) => ({
-        ...e,
-        employee: e.employee ? { ...e.employee, idCardNumber: safeDecryptStr(e.employee.idCardNumber) } : e.employee,
-      })),
+      entries: rawBatch.entries.map((e: any) => {
+        const perf = perfMap.get(e.employeeId)
+        return {
+          ...e,
+          employee: e.employee ? { ...e.employee, idCardNumber: safeDecryptStr(e.employee.idCardNumber) } : e.employee,
+          perfGrade: perf?.grade || null,
+          perfCoefficient: perf?.coefficient || null,
+        }
+      }),
     }
     res.json({ success: true, data: batch })
   } catch (err) {