fix: 员工端首页应发合计显示为0

后端返回字段是 totalPay，前端误用 grossPay（不存在的字段），
导致应发合计始终显示 0。

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

backend/scripts/check-payslip-detail.ts

@@ -0,0 +1,36 @@
+import prisma from '../src/lib/prisma'
+
+async function main() {
+  // 查看已发布的7条工资条明细
+  const published = await prisma.$queryRaw<any[]>`
+    SELECT p."employeeId", e.name, e.department,
+           p."baseSalary", p."overtimePay", p.allowance, p.deduction, p.bonus,
+           p."totalPay", p."socialEmp", p."housingEmp", p.tax, p."netPay",
+           p."publishStatus", p.status, p.month
+    FROM "Payslip" p
+    JOIN "Employee" e ON p."employeeId" = e.id
+    WHERE p.month='2026-08' AND p."publishStatus" = 'PUBLISHED'
+    ORDER BY e.name
+  `
+  console.log('=== 已发布工资条（7条）===')
+  for (const p of published) {
+    console.log(`${p.name} | ${p.department} | base=${p.baseSalary} total=${p.totalPay} net=${p.netPay} social=${p.socialEmp} housing=${p.housingEmp} tax=${p.tax}`)
+  }
+
+  // 查看未发布的23条
+  const unpublished = await prisma.$queryRaw<any[]>`
+    SELECT e.name, e.department,
+           p."totalPay", p."netPay", p."publishStatus"
+    FROM "Payslip" p
+    JOIN "Employee" e ON p."employeeId" = e.id
+    WHERE p.month='2026-08' AND p."publishStatus" IS NULL
+    ORDER BY e.name
+  `
+  console.log('\n=== 未发布工资条（23条）===')
+  for (const p of unpublished) {
+    console.log(`${p.name} | ${p.department} | total=${p.totalPay} net=${p.netPay}`)
+  }
+
+  await prisma.$disconnect()
+}
+main()