修改智能体详细页面新增topic时，返回topicId

llm-back/ruoyi-llm/src/main/java/com/ruoyi/web/llm/controller/CmcTopicController.java

     public AjaxResult add(@RequestBody CmcTopic cmcTopic)
     {
         cmcTopic.setTopicId(new SnowFlake().generateId());
-        return toAjax(cmcTopicService.insertCmcTopic(cmcTopic));
+        cmcTopicService.insertCmcTopic(cmcTopic);
+        return success(cmcTopic.getTopicId());
     }
 
     /**

llm-ui/src/views/llm/agent/AgentDetail.vue

  * @Author: wrh
  * @Date: 2025-01-01 00:00:00
  * @LastEditors: Please set LastEditors
- * @LastEditTime: 2025-07-29 15:42:41
+ * @LastEditTime: 2025-07-29 16:58:28
 -->
 <template>
   <div class="agent-detail-container" v-loading="loading">
     }
     chatMessages.value.push(uploadMessage);
     ElMessage.success('文件上传成功');
-    await addTopic({ agentId: props.agentId, topic: fileName })
-    const res = await listTopic({ agentId: props.agentId })
-    if (res.rows.length > 0) {
-      const topicId = res.rows[0].topicId
-      await addChat({ userId: userStore.id, chatId, topicId, output: assistantContent, outputTime: proxy.parseTime(new Date(), '{y}-{m}-{d} {h}:{i}:{s}') })
-    }
+    let topicRes = await addTopic({ agentId: props.agentId, topic: fileName });
+    const topicId = topicRes.msg;
+    await addChat({ userId: userStore.id, chatId, topicId, output: assistantContent, outputTime: proxy.parseTime(new Date(), '{y}-{m}-{d} {h}:{i}:{s}') });
 
     nextTick(() => {
       scrollToBottom()