fix(web): clear cached user data on sign-out and sign-in

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/web/src/components/auth-form.tsx

@@ -9,6 +9,7 @@ import { Alert, AlertDescription } from "@/components/ui/alert";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
+import { useResetUserState } from "@/hooks/use-reset-user-state";
 import { authClient, signIn, signUp } from "@/lib/auth/client";
 import { useAppForm } from "@/lib/form";
 
@@ -40,6 +41,7 @@ export function AuthForm({
 }) {
   const { t } = useLingui();
   const navigate = useNavigate();
+  const resetUserState = useResetUserState();
   const [error, setError] = useState("");
   const [oidcLoading, setOidcLoading] = useState(false);
 
@@ -70,6 +72,7 @@ export function AuthForm({
             return;
           }
         }
+        resetUserState();
         void navigate({ to: isRegister ? "/onboarding" : "/dashboard" });
       } catch {
         setError(t`Something went wrong`);

apps/web/src/components/nav-bar.tsx

@@ -25,6 +25,7 @@ import {
 } from "@/components/ui/dropdown-menu";
 import { Kbd } from "@/components/ui/kbd";
 import { Separator } from "@/components/ui/separator";
+import { useResetUserState } from "@/hooks/use-reset-user-state";
 import { commandPaletteOpenAtom } from "@/lib/atoms/command-palette";
 import { signOut } from "@/lib/auth/client";
 
@@ -115,6 +116,7 @@ export function NavBar({
 }) {
   const { t } = useLingui();
   const navigate = useNavigate();
+  const resetUserState = useResetUserState();
   const { pathname } = useLocation();
   const setCommandPaletteOpen = useSetAtom(commandPaletteOpenAtom);
 
@@ -249,7 +251,8 @@ export function NavBar({
                 variant="destructive"
                 onSelect={async () => {
                   await signOut();
-                  void navigate({ to: "/" });
+                  await navigate({ to: "/" });
+                  resetUserState();
                 }}
                 className="cursor-pointer text-[13px]"
               >

apps/web/src/components/settings/account-section.tsx

@@ -39,6 +39,7 @@ import { Label } from "@/components/ui/label";
 import { Progress } from "@/components/ui/progress";
 import { Spinner } from "@/components/ui/spinner";
 import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
+import { useResetUserState } from "@/hooks/use-reset-user-state";
 import { authClient, signOut } from "@/lib/auth/client";
 import { getErrorMessage } from "@/lib/error-messages";
 import { useAppForm } from "@/lib/form";
@@ -59,6 +60,7 @@ export function AccountSection({
 }) {
   const { t } = useLingui();
   const navigate = useNavigate();
+  const resetUserState = useResetUserState();
   const router = useRouter();
   const [avatarUrl, setAvatarUrl] = useState(user.image);
   const [isHovered, setIsHovered] = useState(false);
@@ -318,7 +320,8 @@ export function AccountSection({
             variant="destructive"
             onClick={async () => {
               await signOut();
-              void navigate({ to: "/" });
+              await navigate({ to: "/" });
+              resetUserState();
             }}
           >
             <IconLogout aria-hidden={true} />

apps/web/src/hooks/use-reset-user-state.ts

@@ -0,0 +1,19 @@
+import { useQueryClient } from "@tanstack/react-query";
+import { useSetAtom } from "jotai";
+import { RESET } from "jotai/utils";
+import { useCallback } from "react";
+
+import { recentSearchesAtom } from "@/lib/atoms/command-palette";
+
+/**
+ * Drop everything cached for the current user. Query keys are not scoped by
+ * user, so this must run on sign-out and before entering the app after sign-in.
+ */
+export function useResetUserState() {
+  const queryClient = useQueryClient();
+  const setRecentSearches = useSetAtom(recentSearchesAtom);
+  return useCallback(() => {
+    queryClient.clear();
+    setRecentSearches(RESET);
+  }, [queryClient, setRecentSearches]);
+}