fix: refresh Pi credential readiness

frontend/src/shell/PiManagement.tsx

@@ -10,7 +10,6 @@ import {
   savePiManagementConfig,
   type PiInstallationConfig,
   type PiManagementOptions,
-  type PiManagementStatus,
 } from "../api/pi-management";
 import { Button } from "../components/ui/button";
 import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from "../components/ui/dialog";
@@ -143,13 +142,11 @@ export function PiManagement({ open, onClose }: { open: boolean; onClose: () =>
 
   const saveMutation = useMutation({
     mutationFn: savePiManagementConfig,
-    onSuccess: (saved) => {
+    onSuccess: async (saved) => {
       const config = { provider: saved.provider, model: saved.model, reasoning: saved.reasoning };
-      queryClient.setQueryData<PiManagementStatus>(["pi-management", "status"], (current) => (
-        current ? { ...current, config } : current
-      ));
       setDraft(config);
       setSmokeState(undefined);
+      await queryClient.invalidateQueries({ queryKey: ["pi-management", "status"] });
       setFeedback({ tone: "success", message: "Defaults saved." });
     },
     onError: (error) => setFeedback({ tone: "error", message: errorMessage(error, "Could not save Pi defaults.") }),