web(realtime): refresh chat info panel on chat updates

docs/core-checklist-status.md

@@ -40,7 +40,7 @@ Legend:
 31. Privacy - `PARTIAL` (avatar/last-seen/group-invites + PM policy `everyone|contacts|nobody`; remaining edge UX/matrix hardening)
 32. Security - `PARTIAL` (sessions + revoke + 2FA base + access-session visibility; UX/TOTP recovery flow ongoing)
 33. Realtime Events - `DONE` (connect/disconnect/send/receive/typing/read/delivered/online/offline + chat/message updates)
-34. Sync - `PARTIAL` (cross-device via backend state + realtime; reconciliation improved for loaded chats/messages)
+34. Sync - `PARTIAL` (cross-device via backend state + realtime; reconciliation improved for loaded chats/messages, chat-info panel now hot-refreshes on `chat_updated`)
 35. Additional - `PARTIAL` (drafts/link preview partial/autoload media basic)
 
 ## Current Focus to reach ~80%

web/src/components/ChatInfoPanel.tsx

@@ -107,6 +107,49 @@ export function ChatInfoPanel({ chatId, open, onClose }: Props) {
     setMemberUsers(byId);
   }
 
+  async function refreshPanelData(targetChatId: number, withLoading = false) {
+    if (withLoading) {
+      setLoading(true);
+      setError(null);
+      setAttachmentsLoading(true);
+    }
+    try {
+      const detail = await getChatDetail(targetChatId);
+      setChat(detail);
+      setTitleDraft((prev) => (prev.trim() ? prev : (detail.title ?? "")));
+      const notificationSettings = await getChatNotificationSettings(targetChatId);
+      setMuted(notificationSettings.muted);
+      if (detail.type === "private" && !detail.is_saved && detail.counterpart_user_id) {
+        try {
+          const counterpart = await getUserById(detail.counterpart_user_id);
+          setCounterpartProfile(counterpart);
+          const blocked = await listBlockedUsers();
+          setCounterpartBlocked(blocked.some((u) => u.id === detail.counterpart_user_id));
+        } catch {
+          setCounterpartProfile(null);
+          setCounterpartBlocked(false);
+        }
+      } else {
+        setCounterpartProfile(null);
+        setCounterpartBlocked(false);
+      }
+      await refreshMembers(targetChatId);
+      const chatAttachments = await getChatAttachments(targetChatId, 120);
+      const messages = await getRecentMessagesForLinks(targetChatId);
+      setAttachments(chatAttachments);
+      setLinkItems(extractLinkItems(messages));
+    } catch {
+      if (withLoading) {
+        setError("Failed to load chat info");
+      }
+    } finally {
+      if (withLoading) {
+        setLoading(false);
+        setAttachmentsLoading(false);
+      }
+    }
+  }
+
   function jumpToMessage(messageId: number) {
     if (!chatId) {
       return;
@@ -140,53 +183,10 @@ export function ChatInfoPanel({ chatId, open, onClose }: Props) {
       return;
     }
     let cancelled = false;
-    setLoading(true);
-    setError(null);
-    setAttachmentsLoading(true);
     void (async () => {
-      try {
-        const detail = await getChatDetail(chatId);
-        if (cancelled) return;
-        setChat(detail);
-        setTitleDraft(detail.title ?? "");
-        const notificationSettings = await getChatNotificationSettings(chatId);
-        if (!cancelled) {
-          setMuted(notificationSettings.muted);
-        }
-        if (detail.type === "private" && !detail.is_saved && detail.counterpart_user_id) {
-          try {
-            const counterpart = await getUserById(detail.counterpart_user_id);
-            if (!cancelled) {
-              setCounterpartProfile(counterpart);
-            }
-            const blocked = await listBlockedUsers();
-            if (!cancelled) {
-              setCounterpartBlocked(blocked.some((u) => u.id === detail.counterpart_user_id));
-            }
-          } catch {
-            if (!cancelled) {
-              setCounterpartProfile(null);
-              setCounterpartBlocked(false);
-            }
-          }
-        } else if (!cancelled) {
-          setCounterpartProfile(null);
-          setCounterpartBlocked(false);
-        }
-        await refreshMembers(chatId);
-        const chatAttachments = await getChatAttachments(chatId, 120);
-        const messages = await getRecentMessagesForLinks(chatId);
-        if (!cancelled) {
-          setAttachments(chatAttachments);
-          setLinkItems(extractLinkItems(messages));
-        }
-      } catch {
-        if (!cancelled) setError("Failed to load chat info");
-      } finally {
-        if (!cancelled) {
-          setLoading(false);
-          setAttachmentsLoading(false);
-        }
+      await refreshPanelData(chatId, true);
+      if (cancelled) {
+        return;
       }
     })();
     return () => {
@@ -205,6 +205,22 @@ export function ChatInfoPanel({ chatId, open, onClose }: Props) {
     setSearchResults([]);
   }, [chatId, open]);
 
+  useEffect(() => {
+    if (!open || !chatId) {
+      return;
+    }
+    const onRealtimeChatUpdated = (event: Event) => {
+      const realtimeEvent = event as CustomEvent<{ chatId?: number }>;
+      const updatedChatId = Number(realtimeEvent.detail?.chatId);
+      if (!Number.isFinite(updatedChatId) || updatedChatId !== chatId) {
+        return;
+      }
+      void refreshPanelData(chatId, false);
+    };
+    window.addEventListener("bm:chat-updated", onRealtimeChatUpdated);
+    return () => window.removeEventListener("bm:chat-updated", onRealtimeChatUpdated);
+  }, [open, chatId]);
+
   useEffect(() => {
     const onKeyDown = (event: KeyboardEvent) => {
       if (event.key === "Escape") {

web/src/hooks/useRealtime.ts

@@ -133,6 +133,7 @@ export function useRealtime() {
         if (event.event === "chat_updated") {
           const chatId = Number(event.payload.chat_id);
           if (Number.isFinite(chatId)) {
+            window.dispatchEvent(new CustomEvent("bm:chat-updated", { detail: { chatId } }));
             scheduleReloadChats();
             if (chatStore.activeChatId === chatId || (chatStore.messagesByChat[chatId]?.length ?? 0) > 0) {
               void chatStore.loadMessages(chatId);