documentation update

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

@@ -8,8 +8,9 @@ export function useChat({ activeSession, appendMessage, updateLastMessage, refre
   const [lastModel, setLastModel] = useState(null);
   const cancelRef = useRef(null);
 
-  const sendMessage = useCallback(async (text, model, projectId = null) => {
-    if (!activeSession || !text.trim() || streaming) return;
+  const sendMessage = useCallback(async (text, model, projectId = null, session=null) => {
+    const targetSession = session ?? activeSession;
+    if (!targetSession || !text.trim() || streaming) return;
 
     setError(null);
 
@@ -32,7 +33,7 @@ export function useChat({ activeSession, appendMessage, updateLastMessage, refre
 
     // 3. Open stream
     cancelRef.current = streamMessage(
-      activeSession.external_id,
+      targetSession.external_id,
       text,
       model,
       {
@@ -59,7 +60,7 @@ export function useChat({ activeSession, appendMessage, updateLastMessage, refre
 
           // Assign project after first message if one was set
           if (projectId) {
-            updateSession(activeSession.external_id, { projectId })
+            updateSession(targetSession.external_id, { projectId })
               .catch(err => console.warn('[useChat] Failed to assign project:', err.message));
           }
         },

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

@@ -58,11 +58,12 @@ export function useSession() {
     const newSession = {
       external_id: uuidv4(),
       metadata: null,
-      isNew: true, // flag so SessionList can style it differently
+      isNew: true,
     };
     setSessions(prev => [newSession, ...prev]);
     setActiveSession(newSession);
     setMessages([]);
+    return newSession
   }, []);