fix: ChatWorkspace loadRuntime() use cookie-based withSessionRequest

frontend/components/office/ChatWorkspace.tsx

@@ -463,7 +463,7 @@ export default function ChatWorkspace({ initialSister, onClose }: ChatWorkspaceP
 
   const loadRuntime = useCallback(async (sister: SisterName) => {
     try {
-      const res = await fetch(`${API_URL}/api/sisters/${sister}/runtime`);
+      const res = await fetch(`${API_URL}/api/sisters/${sister}/runtime`, withSessionRequest());
       if (!res.ok) return;
       const data = (await res.json()) as RuntimeSnapshot;
       setRuntimeBySister((prev) => ({ ...prev, [sister]: data }));