actually generate doc index for real this time

packages/docs/remix.config.js

@@ -0,0 +1,24 @@
+/* eslint-disable unicorn/prefer-module */
+const glob = require("fast-glob")
+const { join, relative, normalize, parse } = require("path/posix")
+
+/**
+ * @type {import('@remix-run/dev/config').AppConfig}
+ */
+module.exports = {
+  appDirectory: "app",
+  assetsBuildDirectory: "public/build",
+  publicPath: "/build/",
+  serverBuildDirectory: "build",
+  devServerPort: 8002,
+  ignoredRouteFiles: [".*"],
+
+  mdx: async (filename) => {
+    const highlight = await import("rehype-prism-plus").then(
+      (mod) => mod.default,
+    )
+    return {
+      rehypePlugins: [highlight],
+    }
+  },
+}