fix：问候语逻辑

src/pages/Chat/Chat.tsx

@@ -32,7 +32,7 @@ export const Chat: React.FC = () => {
   const currentIdRef = useRef<string | undefined>(id)
   const currentIdRef = useRef<string | undefined>(id)
   const lastSentQuestionRef = useRef<string>('')
   const lastSentQuestionRef = useRef<string>('')
   const abortControllerRef = useRef<AbortController | null>(null)
   const abortControllerRef = useRef<AbortController | null>(null)
-  const [currentToolName, setCurrentToolName] = useState<string | undefined>(undefined)
+  const [currentToolName, setCurrentToolName] = useState<string>('通用模式')
 
 
   /** 处理正常stream的数据 */
   /** 处理正常stream的数据 */
   const handleStreamMesageData = (msg: any, question: string) => {
   const handleStreamMesageData = (msg: any, question: string) => {
@@ -330,26 +330,23 @@ export const Chat: React.FC = () => {
 
 
   // 根据 currentToolId 获取对应的 toolName
   // 根据 currentToolId 获取对应的 toolName
   useEffect(() => {
   useEffect(() => {
+    if (!currentToolId)
+      return
+
     const getToolNameFromToolId = async () => {
     const getToolNameFromToolId = async () => {
-      if (currentToolId) {
-        try {
-          // 使用统一的方法获取 userRoles（先同步路由到 localStorage，然后读取）
-          const userRoles = getUserRolesForApi()
-          const res = await fetchToolList({ userRoles })
-          if (res?.data) {
-            const tool = res.data.find((t: any) => t.toolId === currentToolId)
-            if (tool?.toolName) {
-              setCurrentToolName(tool.toolName)
-            }
+      try {
+        // 使用统一的方法获取 userRoles（先同步路由到 localStorage，然后读取）
+        const userRoles = getUserRolesForApi()
+        const res = await fetchToolList({ userRoles })
+        if (res?.data) {
+          const tool = res.data.find((t: any) => t.toolId === currentToolId)
+          if (tool?.toolName) {
+            setCurrentToolName(tool.toolName)
           }
           }
         }
         }
-        catch (error) {
-          console.error('获取工具列表失败:', error)
-        }
       }
       }
-      else {
-        // 通用模式
-        setCurrentToolName('通用模式')
+      catch (error) {
+        console.error('获取工具列表失败:', error)
       }
       }
     }
     }
     getToolNameFromToolId()
     getToolNameFromToolId()