route the index.html path that hugging face serves to the app

src/hooks.ts

@@ -0,0 +1,6 @@
+import type { Reroute } from '@sveltejs/kit';
+
+/** Hugging Face serves static Spaces at /index.html, which the client router would otherwise 404. */
+export const reroute: Reroute = ({ url }) => {
+	if (url.pathname.endsWith('/index.html')) return url.pathname.slice(0, -'index.html'.length);
+};