Fix Bug #428: 门诊医生站-检查申请：未实现分类联动检查方法及套餐明细展示与勾选逻辑

1. handleMethodSelect 中新增/更新已选项时，设置 expanded=true 使套餐明细自动展开
2. toggleItemExpand 中改用 packageDetailsDisplay/carrier.packageDetails 判断是否已加载明细
   （原代码检查非响应式的 item.packageDetails，导致重复加载或加载判断失效）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

openhis-ui-vue3/src/views/doctorstation/components/examination/examinationApplication.vue

@@ -1362,8 +1362,9 @@ async function handleMethodSelect(checked, method, cat) {
         existingItem.isPackage = true;
         existingItem.packageId = method.packageId;
         existingItem.packageName = method.packageName || existingItem.packageName;  // #428修复: 确保 packageName 同步
+        existingItem.expanded = true;  // #428修复: 有套餐时默认展开，展示套餐明细
         // 预加载套餐明细
-        loadPackageDetailsForItem(existingItem);
+        await loadPackageDetailsForItem(existingItem);
       }
       updateMethodDisplay();
       return;
@@ -1399,9 +1400,10 @@ async function handleMethodSelect(checked, method, cat) {
     };
     selectedItems.value.push(newItem);
 
-    // 如果是套餐，预加载套餐明细
+    // 如果是套餐，预加载套餐明细并默认展开
     if (newItem.isPackage && newItem.packageId) {
-      loadPackageDetailsForItem(newItem);
+      newItem.expanded = true;
+      await loadPackageDetailsForItem(newItem);
     }
 
     // 自动回填执行科室
@@ -1523,7 +1525,10 @@ async function handleItemSelect(checked, item, cat) {
 // Bug #384修复 + #426修复: 展开/收起项目卡片
 async function toggleItemExpand(item) {
   item.expanded = !item.expanded;
-  if (item.expanded && (item.isPackage || item.packageName) && (!item.packageDetails || item.packageDetails.length === 0) && !item.packageDetailsLoading) {
+  const carrier = getPackageCarrier(item);
+  const hasDetails = Array.isArray(item.packageDetailsDisplay) && item.packageDetailsDisplay.length > 0
+    || Array.isArray(carrier?.packageDetails) && carrier.packageDetails.length > 0;
+  if (item.expanded && (item.isPackage || item.packageName) && !hasDetails && !item.packageDetailsLoading) {
     await loadPackageDetailsForItem(item);
   }
   if (item.expanded && shouldShowPackageBody(item)) {