Polish admin hub pages: drop duplicate headers, align CTAs and empties.

Remove redundant titles under AdminHubChrome, style events/polls create flows with admin chrome + i18n, and standardize empty states / teams form classes.

Co-authored-by: Cursor <[email protected]>

src/app/admin/events/page.tsx

@@ -1,5 +1,5 @@
 import Link from "next/link";
-import { Button } from "@/components/ui/button";
+import { getTranslations } from "next-intl/server";
 import { fetchAdminList } from "@/lib/admin-list";
 import { PERMS } from "@/lib/permissions";
 import { EventsTable } from "./events-table";
@@ -11,6 +11,7 @@ export default async function EventsPage({
 	params: Promise<{ locale: string }>;
 	searchParams: Promise<Record<string, string>>;
 }) {
+	const t = await getTranslations("pages.admin.events");
 	const result = await fetchAdminList(
 		{
 			permission: PERMS.EVENTS_VIEW,
@@ -45,9 +46,9 @@ export default async function EventsPage({
 	return (
 		<div className="space-y-6">
 			<div className="flex justify-end">
-				<Button asChild>
-					<Link href="/admin/events/create">New Event</Link>
-				</Button>
+				<Link href="/admin/events/create" className="btn btn-primary">
+					{t("newEvent")}
+				</Link>
 			</div>
 
 			<EventsTable