summaries chat client

packages/chat-client/src/hooks/useChat.js

@@ -1,4 +1,4 @@
-import { useState, useCallback, useRef } from 'react';
+import React, { useEffect, useState, useCallback, useRef } from 'react';
 import { streamMessage, updateSession } from '../api/orchestration';
 
 export function useChat({ activeSession, appendMessage, updateLastMessage, refreshSessions }) {
@@ -7,6 +7,18 @@ export function useChat({ activeSession, appendMessage, updateLastMessage, refre
   const [lastTokenCount, setLastTokenCount] = useState(0);
   const [lastModel, setLastModel] = useState(null);
   const cancelRef = useRef(null);
+  const prevStreaming = React.useRef(false);
+  const [summarising, setSummarising] = useState(false);
+
+  useEffect(() => {
+    if (prevStreaming.current && !streaming) {
+      // Stream just finished — trigger the summarising indicator
+      setSummarising(true);
+      const t = setTimeout(() => setSummarising(false), 8000);
+      return () => clearTimeout(t);
+    }
+    prevStreaming.current = streaming;
+  }, [streaming]);
 
   const sendMessage = useCallback(async (text, model, projectId = null, session=null) => {
     const targetSession = session ?? activeSession;