SanYeCao-blog/src/components/Navigation.astro

---
import { getLangFromUrl, useTranslations } from "@/i18n";

const langParam = Astro.url.searchParams.get("lang");
const lang = langParam === "en" ? "en" : "zh";
const t = useTranslations(lang);
---

<nav>
    <a href={`/?lang=${lang}`}>{t("nav.home")}</a>
    <a href={`/about?lang=${lang}`}>{t("nav.about")}</a>
    <a href={`/tags?lang=${lang}`}>{t("nav.tags")}</a>
</nav>