Use the central admin metric card

webui/src/features/admin/AdminOverviewPanel.tsx

@@ -1,7 +1,7 @@
 import { useEffect, useState } from "react";
 import type { ApiSettings } from "@govoplan/core-webui";
 import { fetchAdminOverview, type AdminOverview } from "../../api/admin";
-import { Card } from "@govoplan/core-webui";
+import { Card, MetricCard } from "@govoplan/core-webui";
 import { Button } from "@govoplan/core-webui";
 import { AdminPageLayout, adminErrorMessage } from "@govoplan/core-webui";
 
@@ -116,7 +116,7 @@ function hasAnySection(sections: ReadonlySet<string>, candidates: readonly strin
 }
 
 function Metric({ title, value, text }: {title: string;value: string | number;text: string;}) {
-  return <Card title={title}><strong className="module-big-number">{value}</strong><p className="muted">{text}</p></Card>;
+  return <MetricCard label={title} value={value} detail={text} />;
 }
 
 function AreaLink({ title, text, onClick }: {title: string;text: string;onClick: () => void;}) {