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/merge.vue

@@ -375,7 +375,6 @@ import AbnormalForm from './components/AbnormalForm';
 import PlanSheetViewer from './components/PlanSheetViewer.vue';
 import { generateCoilNoPrefix } from "@/utils/coil/coilNo";
 import ContractSelect from "@/components/KLPService/ContractSelect";
-import { addCoilContractRel } from "@/api/wms/coilContractRel";
 
 export default {
   name: 'MergeCoil',
@@ -827,6 +826,12 @@ export default {
         return;
       }
 
+      // 验证合同
+      if (!this.targetCoil.contractId) {
+        this.$message.error('请选择合同');
+        return;
+      }
+
       let loadingInstance = null;
       try {
         this.loading = true;
@@ -840,6 +845,7 @@ export default {
 
         const mergeData = {
           ...this.targetCoil,
+          contractId: this.targetCoil.contractId || '',
           enterCoilNo: enterCoilNos,  // 拼接的入场钢卷号
           hasMergeSplit: 2, // 2表示合卷
           abnormals: this.abnormals,
@@ -859,16 +865,8 @@ export default {
           background: 'rgba(0, 0, 0, 0.7)'
         });
 
-        const response = await mergeMaterialCoil(mergeData);
+        await mergeMaterialCoil(mergeData);
 
-        const coilId = response.data;
-
-        if (this.targetCoil.contractId) {
-          addCoilContractRel({
-            coilId: coilId,
-            contractId: this.targetCoil.contractId,
-          })
-        }
         this.$message.success('合卷保存成功');
 
         // 延迟返回，让用户看到成功提示