diff --git a/src/workspaces/officerdev/src/apps/ChatHistory/ChatDetailPanel.tsx b/src/workspaces/officerdev/src/apps/ChatHistory/ChatDetailPanel.tsx
index bdb3e522..5227efa9 100644
--- a/src/workspaces/officerdev/src/apps/ChatHistory/ChatDetailPanel.tsx
+++ b/src/workspaces/officerdev/src/apps/ChatHistory/ChatDetailPanel.tsx
@@ -43,6 +43,12 @@ type ChatLocationState = {
 
 type DetailBarProps = {
   sessionTitle: string | undefined;
+  /**
+   * The session's own directory. Not decoration — every `/chat/sessions` call is scoped by it, because
+   * the server resolves a transcript by searching that cwd's project dir (`findTranscript`). Renaming
+   * without it searches the default group and 404s for any conversation living in a project.
+   */
+  cwd?: string | null;
   /** Transcripts behind this conversation; `> 1` when `/clear` parts have been merged into it. */
   partCount?: number;
   isConnected: boolean;
@@ -50,7 +56,7 @@ type DetailBarProps = {
   onDisconnect?: () => void;
 };
 
-function DetailBar({ sessionTitle, partCount, isConnected, isGenerating, onDisconnect }: DetailBarProps) {
+function DetailBar({ sessionTitle, cwd, partCount, isConnected, isGenerating, onDisconnect }: DetailBarProps) {
   // The id to rename comes from the URL, not from `resumeSessionId`. They are the same for an ordinary
   // conversation and not for a merged `/clear` chain, where the resume target is the tail transcript
   // while the list, the links and the server all address the chain by its head. Renaming the tail would
@@ -61,7 +67,7 @@ function DetailBar({ sessionTitle, partCount, isConnected, isGenerating, onDisco
 
   // The same rename the list's pencil calls, so both surfaces write one place and the invalidation that
   // follows refreshes the row too. A failure toasts rather than reverting silently, matching `SessionList`.
-  const { renameSession } = useClaudeSessions();
+  const { renameSession } = useClaudeSessions(cwd);
   const commitRename = useCallback(
     async (next: string) => {
       if (!sessionId) return;
@@ -176,6 +182,7 @@ function NewChat(props: NewChatProps) {
         // comes from the same place the list gets it, which is also what makes the `/clear` numbering
         // agree in both views instead of only in the row.
         sessionTitle={props.sessionTitle ?? undefined}
+        cwd={props.sessionCwd}
         partCount={props.partCount}
         isConnected={chat.isConnected}
         isGenerating={chat.isGenerating}
@@ -205,7 +212,16 @@ export const ChatDetailPanel = () => {
   // the browser tab strip is the only place the name shows, which is exactly what tells two side-by-side
   // windows apart. Tiled, the same value fills the header's centre. One rule, both states.
   const { sessionId } = useParams<{ sessionId: string }>();
-  usePublishPageTitle(sessionId ? (selected?.title ?? null) : null);
+
+  // The list's copy of the title wins over the one handed down at selection time. `selected.title` rides
+  // the `chat:selected-session` channel, which is published once when a row is clicked and never updated
+  // — so a rename reached the server, refreshed the row, and left this pane and the page title showing
+  // the old name, which reads exactly like the rename having failed. Resolved here, once, and passed
+  // down: renaming from either surface now retitles both, and the list's own pencil retitles an open pane.
+  const { sessions } = useClaudeSessions(selected?.cwd);
+  const title = sessions.find((session) => session.id === sessionId)?.title ?? selected?.title ?? null;
+
+  usePublishPageTitle(sessionId ? title : null);
 
   if (!selected) {
     return (
@@ -224,7 +240,7 @@ export const ChatDetailPanel = () => {
       total={selected.total}
       initialOffset={selected.initialOffset}
       sessionCwd={selected.cwd}
-      sessionTitle={selected.title}
+      sessionTitle={title}
       partCount={selected.partCount}
     />
   );