✨ 项目变更可编辑业务部门/平台公司，组织名称列左对齐

Co-authored-by: Cursor <cursoragent@cursor.com>

src/views/business/project-apply.vue

@@ -224,7 +224,7 @@
               placeholder="请选择"
               filterable
               clearable
-              :disabled="isBasicInfoReadonly"
+              :disabled="dialogReadonly"
             />
           </el-form-item>
           <el-form-item label="平台公司" prop="undertakeDeptId">
@@ -236,7 +236,7 @@
               collapse-tags-tooltip
               clearable
               filterable
-              :disabled="isBasicInfoReadonly"
+              :disabled="dialogReadonly"
               @change="handleUndertakeDeptChange"
             >
               <el-option
@@ -2493,7 +2493,8 @@ export default {
     loadDeptOptions() {
       getDeptTree().then(res => {
         const deptTree = res.data.data || [];
-        const businessDeptTree = ['add', 'edit', 'majorSupplement'].includes(this.dialogType)
+        // 新增/编辑/重大补录/项目变更均可选择业务部门，排除外部组织
+        const businessDeptTree = ['add', 'edit', 'majorSupplement', 'change'].includes(this.dialogType)
           ? this.excludeExternalOrganization(deptTree)
           : deptTree;
         this.deptOptions = this.flattenDept(businessDeptTree);