fix: race condition in new context event

src/renderer/src/pages/home/Messages/Messages.tsx

@@ -46,6 +46,7 @@ const Messages: React.FC<MessagesProps> = ({ assistant, topic, setActiveTopic })
   const [displayMessages, setDisplayMessages] = useState<Message[]>([])
   const [hasMore, setHasMore] = useState(false)
   const [isLoadingMore, setIsLoadingMore] = useState(false)
+  const [isProcessingContext, setIsProcessingContext] = useState(false)
   const { messages, displayCount, loading, updateMessages, clearTopicMessages, deleteMessage } =
     useMessageOperations(topic)
 
@@ -107,6 +108,10 @@ const Messages: React.FC<MessagesProps> = ({ assistant, topic, setActiveTopic })
         }
       }),
       EventEmitter.on(EVENT_NAMES.NEW_CONTEXT, async () => {
+        if (isProcessingContext) return
+        setIsProcessingContext(true)
+
+        try {
           const messages = messagesRef.current
 
           if (messages.length === 0) {
@@ -116,7 +121,7 @@ const Messages: React.FC<MessagesProps> = ({ assistant, topic, setActiveTopic })
           const lastMessage = last(messages)
 
           if (lastMessage?.type === 'clear') {
-          deleteMessage(lastMessage)
+            await deleteMessage(lastMessage)
             scrollToBottom()
             return
           }
@@ -126,6 +131,9 @@ const Messages: React.FC<MessagesProps> = ({ assistant, topic, setActiveTopic })
           await updateMessages(newMessages)
 
           scrollToBottom()
+        } finally {
+          setIsProcessingContext(false)
+        }
       }),
       EventEmitter.on(EVENT_NAMES.NEW_BRANCH, async (index: number) => {
         const newTopic = getDefaultTopic(assistant.id)
@@ -151,7 +159,7 @@ const Messages: React.FC<MessagesProps> = ({ assistant, topic, setActiveTopic })
 
     return () => unsubscribes.forEach((unsub) => unsub())
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [assistant, dispatch, scrollToBottom, topic])
+  }, [assistant, dispatch, scrollToBottom, topic, isProcessingContext])
 
   useEffect(() => {
     runAsyncFunction(async () => {