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

apps/web/app/api/export/route.ts

@@ -0,0 +1,45 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getExportDocuments, compileExportMarkdown, type ExportSortOption } from "@mcpedia/core";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(req: NextRequest) {
+  const { searchParams } = new URL(req.url);
+  const path = searchParams.get("path") || undefined;
+  const section = searchParams.get("section") || undefined;
+  const format = searchParams.get("format") || "json";
+  const sortBy = (searchParams.get("sort") as ExportSortOption) || "category_points";
+  const slugsParam = searchParams.get("slugs");
+  const slugs = slugsParam ? slugsParam.split(",").map((s) => s.trim()) : undefined;
+
+  try {
+    const data = await getExportDocuments({
+      path,
+      section,
+      slugs,
+      sortBy,
+    });
+
+    if (format === "markdown" || format === "md") {
+      const md = compileExportMarkdown(data);
+      const safeFilename = data.summary.title
+        .toLowerCase()
+        .replace(/[^a-z0-9]+/g, "-")
+        .replace(/^-|-$/g, "");
+
+      return new NextResponse(md, {
+        headers: {
+          "Content-Type": "text/markdown; charset=utf-8",
+          "Content-Disposition": `attachment; filename="${safeFilename}.md"`,
+        },
+      });
+    }
+
+    return NextResponse.json(data);
+  } catch (err) {
+    return NextResponse.json(
+      { error: err instanceof Error ? err.message : "Export failed" },
+      { status: 500 },
+    );
+  }
+}