Fix Bug #405: 住院医生工作站：临床医嘱保存成功后，医嘱条目仍处于可编辑状态（未锁定展示）

- handleSaveSign: 新增行点击确定后调用savePrescription持久化到后端，而非仅设置isEdit=false后调用handleAddPrescription
- handleSaveBatch: 修复nextId.value == 1 为赋值操作(=)
- handleSaveBatch: catch块增加错误提示，保存失败时用户可感知

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

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

@@ -1210,7 +1210,7 @@ function handleSave() {
           isSaving.value = false;
           getListInfo(false);
           bindMethod.value = {};
-          nextId.value == 1;
+          nextId.value = 1;
         } else {
           proxy.$modal.msgError(res.message);
           isSaving.value = false;
@@ -1376,13 +1376,21 @@ function handleSaveSign(row, index) {
     savePrescription({ regAdviceSaveList: [row] }).then((res) => {
       if (res.code === 200) {
         proxy.$modal.msgSuccess('保存成功');
-        nextId.value == 1;
+        nextId.value = 1;
       }
     });
   } else {
-    if (prescriptionList.value[0].adviceName) {
-      handleAddPrescription();
-    }
+    // 新增行：调用保存接口将数据持久化到后端
+    row.dbOpType = '1';
+    savePrescription({ regAdviceSaveList: [row] }).then((res) => {
+      if (res.code === 200) {
+        proxy.$modal.msgSuccess('保存成功');
+        nextId.value = 1;
+        // 保存成功后刷新列表，确保后端返回的数据带 requestId
+        getListInfo(false);
+      }
+    });
+    // 不需要再添加空行，保存成功后由 getListInfo 处理
   }
   adviceQueryParams.value.adviceType = undefined;
 }
@@ -1429,12 +1437,13 @@ function handleSaveBatch() {
           if (row) row.isEdit = false;
         });
         getListInfo(false);
-        nextId.value == 1;
+        nextId.value = 1;
         isSaving.value = false;
       }
     })
     .catch((error) => {
       isSaving.value = false;
+      proxy.$modal.msgError(error?.msg || '保存失败，请重试');
     });
 }