chore: import upstream snapshot with attribution

docs/next.config.mjs

@@ -0,0 +1,38 @@
+import { fileURLToPath } from "node:url";
+import { dirname } from "node:path";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const workspaceRoot = dirname(__dirname);
+
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  reactStrictMode: true,
+  basePath: process.env.NEXT_BASE_PATH || undefined,
+  assetPrefix: process.env.NEXT_ASSET_PREFIX || undefined,
+  serverExternalPackages: ["bash-tool", "just-bash", "@mongodb-js/zstd"],
+  async headers() {
+    return [
+      {
+        source: "/install.sh",
+        headers: [
+          {
+            key: "Content-Type",
+            value: "text/x-shellscript; charset=utf-8",
+          },
+          {
+            key: "Cache-Control",
+            value: "public, max-age=300",
+          },
+        ],
+      },
+    ];
+  },
+  pageExtensions: ["ts", "tsx", "mdx"],
+  turbopack: {
+    // pnpm installs Next at the workspace root; Turbopack needs the same root
+    // to resolve workspace dependencies when the docs app runs through Turbo.
+    root: workspaceRoot,
+  },
+};
+
+export default nextConfig;