feat(auth) : improve Google account handling

components/auth/account-link-error-redirect.tsx

@@ -0,0 +1,18 @@
+"use client";
+
+import { useEffect } from "react";
+import { useRouter, useSearchParams } from "next/navigation";
+
+export function AccountLinkErrorRedirect() {
+  const router = useRouter();
+  const searchParams = useSearchParams();
+  const error = searchParams.get("error");
+
+  useEffect(() => {
+    if (error === "account_not_linked") {
+      router.replace("/auth/login?error=account_not_linked");
+    }
+  }, [error, router]);
+
+  return null;
+}