feat: comprehensive CMS improvements

- Fix DOMPurify SSR crash (use isomorphic-dompurify)
- Fix SanitizedHtml to sanitize by default
- Add auth guards to studio/catalog maintenance pages
- Add update/edit to vouchers CRUD
- Add update/edit to rare-values CRUD
- Add approve workflow to applications page
- Add edit form to guilds detail page
- Add SEO metadata to all public pages (21 pages)
- Fix mobile nav accessibility (focus trap, aria attributes)
- Fix missing labels and table accessibility
- Add dynamic imports for heavy client components (6 components)
- Fix silent error swallowing (40+ locations)
- Add content scheduling for articles (publishAt, status)
- Wire up 12 missing webhook notification triggers
- Add global search to admin panel
- Add bulk actions to admin users table
- Fix JSON formatting and a11y issues

src/components/admin/application-actions.tsx

@@ -0,0 +1,74 @@
+"use client";
+
+import { useRouter } from "next/navigation";
+import { useTranslations } from "next-intl";
+import { useTransition } from "react";
+import {
+	approveApplication,
+	dismissApplication,
+} from "@/actions/admin-applications";
+import { useConfirmDialog } from "@/components/admin/confirm-dialog";
+import { Button } from "@/components/ui/button";
+
+export function ApplicationActions({ id }: { id: string }) {
+	const t = useTranslations("pages.admin.applications");
+	const router = useRouter();
+	const [pending, startTransition] = useTransition();
+	const { confirm, dialog: confirmDialog } = useConfirmDialog();
+
+	async function handleApprove() {
+		const ok = await confirm({
+			title: t("approve"),
+			description: t("confirmApprove"),
+			confirmLabel: t("approve"),
+			variant: "default",
+		});
+		if (!ok) return;
+		startTransition(async () => {
+			const fd = new FormData();
+			fd.set("id", id);
+			await approveApplication(fd);
+			router.refresh();
+		});
+	}
+
+	async function handleReject() {
+		const ok = await confirm({
+			title: t("reject"),
+			description: t("confirmReject"),
+			confirmLabel: t("reject"),
+			variant: "danger",
+		});
+		if (!ok) return;
+		startTransition(async () => {
+			const fd = new FormData();
+			fd.set("id", id);
+			await dismissApplication(fd);
+			router.refresh();
+		});
+	}
+
+	return (
+		<div className="flex gap-2">
+			{confirmDialog}
+			<Button
+				type="button"
+				variant="default"
+				size="sm"
+				disabled={pending}
+				onClick={handleApprove}
+			>
+				{t("approve")}
+			</Button>
+			<Button
+				type="button"
+				variant="destructive"
+				size="sm"
+				disabled={pending}
+				onClick={handleReject}
+			>
+				{t("reject")}
+			</Button>
+		</div>
+	);
+}