feat: 新增合同配置页面，优化多页面合同关联逻辑

1.  新增crm/contract/selectConfig页面，支持本地配置可选合同列表，区分手动/接口同步来源
2.  优化ContractSelect组件，新增上次选中合同置顶、本地存储选中记录功能
3.  为合卷、分条、退火计划、钢卷编辑页面添加合同必填校验与自动关联逻辑
4.  移除各业务页面冗余的合同关系手动调用代码，统一关联逻辑

klp-ui/src/views/wms/coil/panels/stepSplit.vue

@@ -393,7 +393,6 @@ import { generateCoilNoPrefix } from '@/utils/coil/coilNo'
 import ProductInfo from '@/components/KLPService/Renderer/ProductInfo'
 import RawMaterialInfo from '@/components/KLPService/Renderer/RawMaterialInfo'
 import ContractSelect from '@/components/KLPService/ContractSelect'
-import { addCoilContractRel } from '@/api/wms/coilContractRel'
 
 export default {
   name: 'StepSplit',
@@ -491,7 +490,8 @@ export default {
         materialType: [{ required: true, message: '请选择材料类型', trigger: 'change' }],
         itemId: [{ required: true, message: '请选择成品/原料', trigger: 'change' }],
         netWeight: [{ required: true, message: '请输入净重', trigger: 'blur' }],
-        warehouseId: [{ required: true, message: '请选择所在库位', trigger: 'change' }]
+        warehouseId: [{ required: true, message: '请选择所在库位', trigger: 'change' }],
+        contractId: [{ required: true, message: '请选择合同', trigger: 'change' }]
       },
       buttonLoading: false,
       currentAction: {},
@@ -872,13 +872,6 @@ export default {
         } else {
           // 新增分条：调用创建接口
           res = await createSpecialChild(this.coilId, this.actionId, splitData)
-          // 新增分条后，需要添加分条的合同关系
-          if (this.splitForm.contractId) {
-            addCoilContractRel({
-              coilId: res.data.coilId,
-              contractId: this.splitForm.contractId
-            })
-          }
         }
 
         this.$message.success(this.splitForm.coilId ? '编辑分条成功' : '新增分条成功')