feat: support i18n

apps/client/src/features/user/components/account-languate.tsx

@@ -0,0 +1,44 @@
+import { Group, Text, Select } from "@mantine/core";
+import { useTranslation } from "react-i18next";
+
+export default function AccountLanguage() {
+  const { t } = useTranslation("settings", {
+    keyPrefix: "preference",
+  });
+
+  return (
+    <Group justify="space-between" wrap="nowrap" gap="xl">
+      <div>
+        <Text size="md">{t("Language")}</Text>
+        <Text size="sm" c="dimmed">
+          {t("Choose your preferred interface language.")}
+        </Text>
+      </div>
+      <LanguageSwitcher />
+    </Group>
+  );
+}
+
+function LanguageSwitcher() {
+  const { t, i18n } = useTranslation("settings", {
+    keyPrefix: "preference",
+  });
+
+  const handleChange = (value: string) => {
+    i18n.changeLanguage(value);
+  };
+
+  return (
+    <Select
+      label={t("Select language")}
+      data={[
+        { value: "zh", label: "中文" },
+        { value: "en", label: "English" },
+      ]}
+      value={i18n.language}
+      onChange={handleChange}
+      allowDeselect={false}
+      checkIconPosition="right"
+    />
+  );
+}