resolve /chat/<id> by scanning project groups and make session rows real links

deep-linking or refreshing /chat/<id> only has the id, so add loadClaudeSessionById
to scan every project group for the transcript and return its real cwd. the session
list page resolves on load from that, setting the cwd picker and resuming. session
rows are now <Link to=/chat/<id>> so clicking updates the url and flows through the
same resolve path.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/apps/officer-web/Screens/Dashboard/ChatHistory/index.tsx

@@ -1,9 +1,11 @@
-import { useEffect, useMemo } from 'react';
+import { useEffect, useMemo, useRef } from 'react';
 import { useParams, useNavigate } from 'react-router';
 import type { LayoutNode, SelectedSession } from 'officerdev';
 import { WorkspaceView } from 'officerdev';
 import { useIsMobile } from 'hooks/useIsMobile';
+import { useClient } from 'hooks/useClient';
 import { useDashboardState } from 'state/useDashboardState';
+import type { ClaudeSessionDetail } from 'state/useClaudeSessions';
 import { usePanelChannel } from 'hooks/usePanelChannel';
 import { defaultLayout } from './defaultLayout';
 
@@ -32,7 +34,11 @@ type SessionListPageProps = {
 
 export const SessionListPage = ({ isNew }: SessionListPageProps) => {
   const { sessionId } = useParams<{ sessionId: string }>();
-  const [, setSelected] = usePanelChannel<SelectedSession>('chat:selected-session', null);
+  const [selected, setSelected] = usePanelChannel<SelectedSession>('chat:selected-session', null);
+  const [, setActiveCwd] = usePanelChannel<string | null>('chat:active-cwd', null);
+  const client = useClient();
+  const selectedRef = useRef(selected);
+  selectedRef.current = selected;
   const rawWorkspace = useDashboardState<LayoutNode>('screens/chat', defaultLayout);
   const isMobile = useIsMobile();
   const navigate = useNavigate();
@@ -52,13 +58,36 @@ export const SessionListPage = ({ isNew }: SessionListPageProps) => {
     }
   }, [rawWorkspace.isLoaded, workspace.value, rawWorkspace.value]);
 
+  // Fresh /chat/<id> (deep-link or refresh): all we have is the id. Resolve the session by id — the
+  // backend scans project groups — so the cwd picker lands on its real dir AND the chat resumes, exactly
+  // as clicking it from the list would. Guarded so it never clobbers an already-loaded selection.
   useEffect(() => {
     if (isNew) {
       setSelected({ id: `new:${Date.now()}` });
       return;
     }
     if (!sessionId) return;
-    setSelected({ id: sessionId });
+    if (selectedRef.current?.id === sessionId && selectedRef.current.resumeSessionId) return;
+    let cancelled = false;
+    (async () => {
+      try {
+        const detail = await client.get<ClaudeSessionDetail>(`/chat/sessions/${sessionId}`);
+        if (cancelled) return;
+        setActiveCwd(detail.cwd || null);
+        setSelected({
+          id: sessionId,
+          model: detail.model,
+          resumeSessionId: sessionId,
+          initialMessages: detail.messages as unknown as NonNullable<SelectedSession>['initialMessages'],
+        });
+      } catch {
+        if (!cancelled) setSelected({ id: sessionId });
+      }
+    })();
+    return () => {
+      cancelled = true;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [sessionId, isNew]);
 
   return (