fix: add missing lib/ files to git - fixes Vercel GitHub deployment

- Updated .gitignore to properly exclude Python lib/ but include Next.js lib/ directories
- Added packages/ui/src/lib/utils.ts (cn utility function)
- Added apps/www/src/lib/sanity.ts (Sanity client configuration)
- Fixes module resolution errors in Vercel GitHub deployments (case-sensitive filesystem)

.gitignore

@@ -15,7 +15,8 @@ downloads/
 eggs/
 .eggs/
 lib/
-!www/src/lib/
+!apps/www/src/lib/
+!packages/ui/src/lib/
 lib64/
 parts/
 sdist/

apps/www/src/lib/sanity.ts

@@ -0,0 +1,20 @@
+import { createClient } from "@sanity/client";
+import imageUrlBuilder from "@sanity/image-url";
+import type { SanityImageSource } from "@sanity/image-url/lib/types/types";
+
+const projectId = process.env.NEXT_PUBLIC_SANITY_PROJECT_ID;
+const dataset = process.env.NEXT_PUBLIC_SANITY_DATASET;
+const apiVersion = process.env.NEXT_PUBLIC_SANITY_API_VERSION;
+
+export const client = createClient({
+  projectId,
+  dataset,
+  apiVersion,
+  useCdn: true, // Set to false if statically generating pages, using ISR or using the on-demand revalidation API
+});
+
+const builder = imageUrlBuilder(client);
+
+export function urlFor(source: SanityImageSource) {
+  return builder.image(source);
+}

packages/ui/src/lib/utils.ts

@@ -0,0 +1,7 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+