fix(worker): 用户付款金额未变化时不再写审计日志

apps/backend/src/routes/admin/worker-platform/orders.ts

@@ -31,6 +31,7 @@ import {
   updateAdminWorkOrderPaymentAmount,
   updateAdminWorkOrderSharing,
 } from '../../../services/worker-platform/index.js'
+import { buildWorkOrderPaymentAmountAuditData } from '../../../services/worker-platform/work-order-payment-amount.js'
 import {
   createJsonHandler,
   requireAdminPermission,
@@ -251,20 +252,14 @@ router.put(
       errorMessage: '修改用户付款金额失败',
       scope: '[admin/worker-platform/orders/:workOrderId/payment-amount]',
       audit: (req, data) => {
-        const result = (data || {}) as {
-          previousAmountFen?: number | null
-          amountFen?: number
-          reason?: string
-        }
+        // 金额未变化时服务层不会写工单事件，这里也不留下一条“已更新”的审计记录。
+        const auditData = buildWorkOrderPaymentAmountAuditData(data)
+        if (!auditData) return null
         return {
           action: 'work_order_payment_amount_updated',
           targetType: 'work_order',
           targetId: String(req.params.workOrderId || ''),
-          data: {
-            previousAmountFen: result.previousAmountFen ?? null,
-            amountFen: result.amountFen ?? null,
-            reason: result.reason || '',
-          },
+          data: auditData,
         }
       },
     },