feat(web): add chat info sync polling fallback

web/src/components/ChatInfoPanel.tsx

@@ -290,6 +290,16 @@ export function ChatInfoPanel({ chatId, open, onClose }: Props) {
     return () => window.removeEventListener("bm:chat-updated", onRealtimeChatUpdated);
   }, [open, chatId]);
 
+  useEffect(() => {
+    if (!open || !chatId) {
+      return;
+    }
+    const timer = window.setInterval(() => {
+      void refreshPanelData(chatId, false);
+    }, 15000);
+    return () => window.clearInterval(timer);
+  }, [open, chatId]);
+
   useEffect(() => {
     const onKeyDown = (event: KeyboardEvent) => {
       if (event.key === "Escape") {