实现密炼物料种类配置关联解析功能，新增种类查找表加载与解析接口，优化选料弹窗层级与刷新功能，增强用户体验与系统稳定性。

jeecgboot-vue3/src/views/system/category/category.constants.ts

@@ -130,7 +130,39 @@ function normalizeTreeSelectNodes(nodes: unknown): Recordable[] {
 }
 
 /** 加载 MES 物料分类树：根下物料大类 + 各物料小类（供密炼物料/混炼示方选料复用） */
-export async function loadMesMaterialCategoryTreeData(): Promise<MesMaterialCategoryTreeLoadResult> {
+let mesMaterialCategoryTreeCache: MesMaterialCategoryTreeLoadResult | null = null;
+let mesMaterialCategoryTreeLoading: Promise<MesMaterialCategoryTreeLoadResult> | null = null;
+
+export function hasMesMaterialCategoryTreeCache() {
+  return !!(mesMaterialCategoryTreeCache?.minors?.length || mesMaterialCategoryTreeCache?.majors?.length);
+}
+
+export function clearMesMaterialCategoryTreeCache() {
+  mesMaterialCategoryTreeCache = null;
+  mesMaterialCategoryTreeLoading = null;
+}
+
+export async function loadMesMaterialCategoryTreeData(forceReload = false): Promise<MesMaterialCategoryTreeLoadResult> {
+  if (!forceReload && mesMaterialCategoryTreeCache) {
+    return mesMaterialCategoryTreeCache;
+  }
+  if (!forceReload && mesMaterialCategoryTreeLoading) {
+    return mesMaterialCategoryTreeLoading;
+  }
+  mesMaterialCategoryTreeLoading = fetchMesMaterialCategoryTreeData()
+    .then((result) => {
+      if (result.minors.length || result.majors.length) {
+        mesMaterialCategoryTreeCache = result;
+      }
+      return result;
+    })
+    .finally(() => {
+      mesMaterialCategoryTreeLoading = null;
+    });
+  return mesMaterialCategoryTreeLoading;
+}
+
+async function fetchMesMaterialCategoryTreeData(): Promise<MesMaterialCategoryTreeLoadResult> {
   // 优先 loadTreeRoot（与密炼物料列表页一致，已验证可用）
   try {
     const treeRes = await loadTreeData({ async: false, pcode: MATERIAL_ROOT_CODE });