feat: add gated housekeeping foundation preview

src/app/admin-next/page.tsx

@@ -0,0 +1,17 @@
+import { notFound, redirect } from "next/navigation";
+import { satisfiesCapability } from "@/features/housekeeping/foundation/capability-context";
+import { createHousekeepingRegistry } from "@/features/housekeeping/foundation/registry";
+import { getHousekeepingCapabilityContext } from "@/features/housekeeping/foundation/server-capability-context";
+import { HOUSEKEEPING_MANIFESTS } from "@/features/housekeeping/manifests";
+
+export default async function AdminNextPage() {
+	const context = await getHousekeepingCapabilityContext();
+	const registry = createHousekeepingRegistry(HOUSEKEEPING_MANIFESTS);
+	const firstVisibleDomain = registry.domains.find((domain) =>
+		satisfiesCapability(context, domain.capability),
+	);
+
+	if (!firstVisibleDomain) notFound();
+
+	redirect(firstVisibleDomain.previewHref);
+}