diff --git a/src/workspaces/officerdev/src/hooks/useChat.ts b/src/workspaces/officerdev/src/hooks/useChat.ts
index fcb7fa32..0e60fdde 100644
--- a/src/workspaces/officerdev/src/hooks/useChat.ts
+++ b/src/workspaces/officerdev/src/hooks/useChat.ts
@@ -200,26 +200,6 @@ export function useChat(initialSessionId?: string, initialModel?: string | null,
   const [claudeSessionId, setClaudeSessionId] = useState<string | null>(resumeSessionId ?? null);
 
   const client = useClient();
-  const queryClient = useQueryClient();
-
-  /*
-    Tell the session LISTS that this conversation exists.
-
-    The chat header resolves its own title by finding this session in the cached list —
-    `sessions.find((s) => s.id === sessionId)`. A newborn conversation is not in that list: it has
-    `staleTime: 30s` and nothing invalidated it, so for up to half a minute the header read "New chat" and
-    the rename control was absent, because rename is a per-row action on a list the session was not in yet.
-    Navigating away and back fixed it, which is what made it look like a rendering bug rather than a stale
-    cache.
-
-    Fired when the transcript id arrives — the START of the turn, not the end — because that is the moment
-    the session becomes real on disk and the server can already name it from the first user message. Fired
-    again when the turn finishes, because the harness's own `ai-title` may have improved on it by then.
-  */
-  const announceSession = useCallback(() => {
-    void queryClient.invalidateQueries({ queryKey: ['CLAUDE_SESSIONS'] });
-    void queryClient.invalidateQueries({ queryKey: ['CHAT_PWDS'] });
-  }, [queryClient]);
 
   // Fetch the next older window and prepend it. The scroll container restores its position from the
   // height delta so the view stays put. Guarded against overlap and against running once fully paged in.
@@ -363,8 +343,6 @@ export function useChat(initialSessionId?: string, initialModel?: string | null,
         claudeSessionIdRef.current = msg.claudeSessionId;
         setClaudeSessionId(msg.claudeSessionId);
         if (replaceUrl) writePermalink(msg.claudeSessionId);
-        // The lists do not know this conversation exists yet — see `announceSession`.
-        announceSession();
         break;
 
       case 'assistant:delta':
@@ -430,10 +408,6 @@ export function useChat(initialSessionId?: string, initialModel?: string | null,
           setClaudeSessionId(msg.claudeSessionId);
           if (replaceUrl) writePermalink(msg.claudeSessionId);
         }
-        // Again at the end of every turn, and OUTSIDE the id check above: the harness writes its own
-        // `ai-title` while the turn runs, so the name the list is showing may now be bettered by the one on
-        // disk — and that is true whether or not this particular `result` happened to carry the id.
-        announceSession();
         commitStreaming();
         setMessages((prev) => [
           ...prev,