处理语音输入组件追加bug

src/components/ai/text/TextToText.vue

@@ -210,7 +210,7 @@ const getConversation = async (id) => {
 
 // 语音输入识别结果处理
 const handleVoiceRecognized = (text) => {
-  prompt.value += text;
+  prompt.value = text;
 };
 
 // =========== 【聊天对话】相关 ===========