Merge pull request #5432 from ConnectAI-E/Feature-fork

feat fork

app/components/chat.tsx

@@ -980,6 +980,7 @@ function _Chat() {
       chatStore.updateCurrentSession(
         (session) => (session.clearContextIndex = session.messages.length),
       ),
+    fork: () => chatStore.forkSession(),
     del: () => chatStore.deleteSession(chatStore.currentSessionIndex),
   });