Fix Bug #523: [住院医生站-临床医嘱] 待保存医嘱总金额显示缺失且编辑态单位选择框变为数字控件

- 总金额列显示横杠: 在 setValue 中为药品类医嘱初始化 totalPrice（有 quantity 时按单价计算，否则为 '0'），确保待保存医嘱的总金额列能正常回显
- 单位选择框变数字控件: setValue 中将 unitCode/doseUnitCode/minUnitCode 统一转为 String 类型，避免 el-select 因值类型不匹配而渲染异常

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

openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/index.vue

@@ -1503,16 +1503,16 @@ function handleSaveBatch() {
 }
 
 function setValue(row) {
-  // 构造单位列表
+  // 构造单位列表，确保 value 始终为 String 类型，避免 el-select 值类型不匹配
   unitCodeList.value = [
-    { value: row.unitCode, label: row.unitCode_dictText, type: 'unit' },
+    { value: String(row.unitCode ?? ''), label: row.unitCode_dictText, type: 'unit' },
     {
-      value: row.doseUnitCode,
+      value: String(row.doseUnitCode ?? ''),
       label: row.doseUnitCode_dictText,
       type: 'dose',
     },
     {
-      value: row.minUnitCode,
+      value: String(row.minUnitCode ?? ''),
       label: row.minUnitCode_dictText,
       type: 'minUnit',
     },
@@ -1577,9 +1577,9 @@ function setValue(row) {
     orgName: row.adviceType != 3 ? undefined : (findOrgName(row.orgId || row.positionId || patientInfo.value?.inHospitalOrgId) || row.orgName || patientInfo.value?.inHospitalOrgName || ''),
     // dose: undefined, Removed to preserve dose value from group package
     unitCodeList: unitCodeList.value,
-    doseUnitCode: row.doseUnitCode,
+    doseUnitCode: String(row.doseUnitCode ?? ''),
-    minUnitCode: row.minUnitCode,
+    minUnitCode: String(row.minUnitCode ?? ''),
-    unitCode: row.partAttributeEnum == 1 ? row.minUnitCode : row.unitCode,
+    unitCode: row.partAttributeEnum == 1 ? String(row.minUnitCode ?? '') : String(row.unitCode ?? ''),
     categoryEnum: row.categoryCode,
     definitionId: row.chargeItemDefinitionId,
     executeNum: 1,
@@ -1595,6 +1595,10 @@ function setValue(row) {
             ? new Decimal(selectedStock.price).div(row.partPercent).toFixed(6)
             : prevRow.minUnitPrice,
           positionName: selectedStock?.locationName,
+          // 🔧 Bug #523 修复：初始化 totalPrice 为 0，避免总金额列显示为横杠
+          totalPrice: row.quantity
+            ? new Decimal(row.quantity).mul(selectedStock?.price ?? 0).toFixed(6)
+            : '0',
         }
       : {
           quantity: 1,