Switch to static export with build-time data fetching

- Change from server-side rendering to static export
- Fetch data at build time and save as JSON
- Remove API routes and tests, use static JSON file
- Switch back to WEB platform from WEB_COMPUTE
- Update build test for static export
- Exclude out directory from security scan
- Much simpler and more reliable approach

next.config.js

@@ -1,7 +1,7 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
-  output: 'standalone',
+  output: 'export',
 }
 
 module.exports = nextConfig