feat: Support implicit index.md in /docs/petal/…/folder

src/routes/docs/petal/[...rest]/+page.server.ts

@@ -1,15 +1,25 @@
 import type { PageServerLoad } from "./$types";
 import { join } from "path";
 import { renderToHtml } from "$lib/docs";
+import { stat } from "fs/promises";
 
 
 export const load: PageServerLoad = async (event) => {
-	const userPath = event.params.rest;
+	let userPath = event.params.rest;
 	// we shouldn't need this, but it doesn't hurt.
 	if (userPath.split("/").find(c => /^\.*$/.test(c)))
 		throw new Error("url is sus");
 
 	const base = join(process.cwd(), ".petalpkgs");
+
+	{
+		const isFolder = await stat(join(base, userPath))
+			.then(f => f.isDirectory())
+			.catch(() => false);
+
+		if (isFolder) userPath += "/index";
+	}
+
 	return {
 		html: await renderToHtml({ base, path: userPath })
 	};