Serve the board index at /leaderboard.json

apps/web/src/app/leaderboard.json/route.js

@@ -0,0 +1,19 @@
+import { leaderboard } from '../../lib/leaderboard.js';
+
+/**
+ * The board index, at `/leaderboard.json`.
+ *
+ * A route of its own because Next matches on path segments: `/leaderboard.json`
+ * is a sibling of `/leaderboard`, not a child, so the catch-all under
+ * `leaderboard/[[...path]]` never sees it and the request falls through to the
+ * feed route, which answers "no such feed: leaderboard". The package documents
+ * this path as the index, and on a framework that hands every path to one
+ * handler it is the index; here it has to be spelled out.
+ */
+export const dynamic = 'force-dynamic';
+
+export async function GET(request) {
+  return (await leaderboard().handle(request)) ?? new Response('Not found', { status: 404 });
+}
+
+export const HEAD = GET;