feat(钢卷管理): 添加钢卷号前缀生成功能并优化样式

添加钢卷号前缀生成工具函数及测试用例
在合并、拆分、分条和录入页面使用自动生成的钢卷号前缀
调整EmployeeSelector组件默认触发器的样式
移除typing.vue中未使用的变更历史代码块
添加钢卷号长度校验规则

klp-ui/src/views/wms/coil/merge.vue

@@ -226,6 +226,7 @@ import ActualWarehouseSelect from "@/components/KLPService/ActualWarehouseSelect
 import RawMaterialSelector from "@/components/KLPService/RawMaterialSelect";
 import ProductSelector from "@/components/KLPService/ProductSelect";
 import WarehouseSelect from "@/components/KLPService/WarehouseSelect";
+import { generateCoilNoPrefix } from "@/utils/coil/coilNo";
 
 export default {
   name: 'MergeCoil',
@@ -238,12 +239,14 @@ export default {
   },
   dicts: ['coil_quality_status'],
   data() {
+    const currentCoilNoPrefix = generateCoilNoPrefix()
     return {
+      currentCoilNoPrefix,
       // 源卷列表
       sourceCoils: [],
       // 目标卷信息
       targetCoil: {
-        currentCoilNo: '',
+        currentCoilNo: currentCoilNoPrefix,
         team: '',
         materialType: null,
         itemType: null,