feat(export): add single PDF export for sections and events with chapter ordering

apps/web/app/export/pdf/page.tsx

@@ -0,0 +1,71 @@
+import React from "react";
+import Link from "next/link";
+import { notFound } from "next/navigation";
+import { getExportDocuments, formatScopeTitle, type ExportSortOption } from "@mcpedia/core";
+import PdfExportView from "@/components/PdfExportView";
+
+export const dynamic = "force-dynamic";
+
+interface ExportPdfPageProps {
+  searchParams: Promise<{
+    path?: string;
+    section?: string;
+    slug?: string;
+    sort?: string;
+  }>;
+}
+
+export async function generateMetadata({ searchParams }: ExportPdfPageProps) {
+  const { path, section, slug } = await searchParams;
+  const target = path || slug || section || "All Documents";
+  const title = formatScopeTitle(target);
+  return {
+    title: `Export PDF: ${title} — MCPedia`,
+    description: `Export and print documentation and CTF writeups for ${title}`,
+  };
+}
+
+export default async function ExportPdfPage({
+  searchParams,
+}: ExportPdfPageProps) {
+  const { path, section, slug, sort } = await searchParams;
+
+  const targetPath = path || slug;
+  const sortBy = (sort as ExportSortOption) || "category_points";
+
+  const exportData = await getExportDocuments({
+    path: targetPath,
+    section: !targetPath ? section : undefined,
+    sortBy,
+  });
+
+  const backHref = targetPath ? `/${targetPath}` : section ? `/${section}` : "/";
+
+  if (exportData.documents.length === 0) {
+    return (
+      <div className="py-16 text-center space-y-4 max-w-lg mx-auto">
+        <div className="text-4xl">📄</div>
+        <h1 className="text-2xl font-bold text-[var(--text-primary)]">
+          No Documents Found for Export
+        </h1>
+        <p className="text-sm text-[var(--text-muted)]">
+          Could not find any published documents matching the path{" "}
+          <code className="text-[var(--brand)] font-mono">
+            {targetPath || section || "root"}
+          </code>
+          .
+        </p>
+        <div className="pt-4">
+          <Link
+            href={backHref}
+            className="inline-flex items-center gap-1.5 px-4 py-2 bg-[var(--brand)] hover:bg-[var(--brand-hover)] text-white text-xs font-semibold rounded-lg shadow-sm transition-all"
+          >
+            <span>← Return to Knowledge Base</span>
+          </Link>
+        </div>
+      </div>
+    );
+  }
+
+  return <PdfExportView exportData={exportData} backHref={backHref} />;
+}