feat(04-03): install react-pdf and configure Next.js transpilePackages

- npm install react-pdf (v9+ pulls in pdfjs-dist automatically)
- Add transpilePackages: ['react-pdf', 'pdfjs-dist'] to next.config.ts
- Build verified passing after config change

teressa-copeland-homes/next.config.ts

@@ -1,7 +1,7 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  /* config options here */
+  transpilePackages: ['react-pdf', 'pdfjs-dist'],
 };
 
 export default nextConfig;