1、ai模型角色（新增角色设定更改）

src/views/ai/chat/index/components/conversation/ConversationUpdateForm.vue

@@ -7,14 +7,22 @@
       label-width="130px"
       v-loading="formLoading"
     >
-      <el-form-item label="角色设定" prop="systemMessage">
+      <el-form-item label="角色设定" prop="description">
         <el-input
           type="textarea"
-          v-model="formData.systemMessage"
+          v-model="formData.description"
           :rows="4"
           placeholder="请输入角色设定"
         />
       </el-form-item>
+      <el-form-item label="系统消息" prop="systemMessage">
+        <el-input
+          type="textarea"
+          v-model="formData.systemMessage"
+          :rows="4"
+          placeholder="请输入系统消息"
+        />
+      </el-form-item>
       <el-form-item label="模型" prop="modelId">
         <el-select v-model="formData.modelId" placeholder="请选择模型">
           <el-option
@@ -74,6 +82,7 @@ const dialogVisible = ref(false) // 弹窗的是否展示
 const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
 const formData = ref({
   id: undefined,
+  description: undefined,
   systemMessage: undefined,
   modelId: undefined,
   temperature: undefined,
@@ -138,6 +147,7 @@ const submitForm = async () => {
 const resetForm = () => {
   formData.value = {
     id: undefined,
+    description: undefined,
     systemMessage: undefined,
     modelId: undefined,
     temperature: undefined,