Remove bundle analyzer (incompatible with Turbopack)

- Removed @next/bundle-analyzer package
- Removed build:analyze script
- Cleaned up next.config.mjs

The Next Bundle Analyzer is not compatible with Turbopack builds yet.
Since this project uses Turbopack, the analyzer cannot be used.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

next.config.mjs

@@ -1,9 +1,3 @@
-import bundleAnalyzer from '@next/bundle-analyzer';
-
-const withBundleAnalyzer = bundleAnalyzer({
-  enabled: process.env.ANALYZE === 'true',
-});
-
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   // Image optimization configuration
@@ -41,4 +35,4 @@ const nextConfig = {
   },
 };
 
-export default withBundleAnalyzer(nextConfig);
+export default nextConfig;