fix：推荐问新建会话逻辑

src/pages/Home/components/QuestionList/QuestionList.tsx

@@ -3,10 +3,11 @@ import type React from 'react'
 import { Image } from '@heroui/image'
 import { motion } from 'framer-motion'
 import { useCallback, useEffect, useState } from 'react'
+import { useNavigate } from 'react-router-dom'
 import Refresh from '@/assets/svg/refresh.svg?react'
 import { type WithAuthProps, withAuth } from '@/auth/withAuth'
-import { useAppDispatch } from '@/store/hook'
-import { createConversation } from '@/store/conversationSlice'
+import { useAppDispatch, useAppSelector } from '@/store/hook'
+import { createConversation, setCurrentConversation, setShouldSendQuestion } from '@/store/conversationSlice'
 import emptyIcon from '@/assets/empty-icon.png'
 
 interface QuestionListProps {
@@ -72,6 +73,8 @@ const QuestionListBase: React.FC<QuestionListProps & WithAuthProps> = ({
   const [displayedItems, setDisplayedItems] = useState<string[]>([])
   const [isClicking, setIsClicking] = useState(false)
   const dispatch = useAppDispatch()
+  const navigate = useNavigate()
+  const { currentConversationId, conversations } = useAppSelector(state => state.conversation)
 
   // 根据 isToolBtn 动态设置 displayCount
   const actualDisplayCount = isToolBtn ? 6 : 4
@@ -89,13 +92,29 @@ const QuestionListBase: React.FC<QuestionListProps & WithAuthProps> = ({
   const handleClick = (item: string) => {
     if (checkAuth() && !isClicking) {
       setIsClicking(true)
-      dispatch(
-        createConversation({
-          conversationData: {},
-          shouldNavigate: true,
-          shouldSendQuestion: item,
-        }),
-      )
+
+      // 优先使用当前会话，如果没有则使用第一个会话，如果都没有则创建新会话
+      const targetConversationId = currentConversationId || conversations[0]?.conversationId
+
+      if (targetConversationId) {
+        // 使用现有会话
+        dispatch(setCurrentConversation(targetConversationId))
+        dispatch(setShouldSendQuestion(item))
+        navigate(`/chat/${targetConversationId}`)
+      }
+      else {
+        // 如果没有现有会话，仍然创建新会话（向后兼容）
+        // 这里可以改为提示用户，或者保持创建新会话的逻辑
+        // 为了最小修改，暂时保持创建新会话的逻辑
+        dispatch(
+          createConversation({
+            conversationData: {},
+            shouldNavigate: true,
+            shouldSendQuestion: item,
+          }),
+        )
+      }
+
       // 防止重复点击
       setTimeout(() => {
         setIsClicking(false)