chore: integrate local imgproxy sidecar and unify list components

- Added imgproxy service to docker-compose.dev.yml with URL mapping
- Implemented robust Base64 encoding for imgproxy source URLs
- Synchronized NEXT_PUBLIC_IMGPROXY_URL and NEXT_PUBLIC_BASE_URL
- Refactored About page to use existing marc-mintel.png asset
- Created shared IconList component and unified list styles project-wide
- Fixed vertical alignment issues in IconList items
- Updated dev script with aggressive port 3000 and lock file cleanup

apps/web/next.config.mjs

@@ -4,6 +4,10 @@ import withMintelConfig from "@mintel/next-config";
 const nextConfig = {
   reactStrictMode: true,
   output: 'standalone',
+  images: {
+    loader: 'custom',
+    loaderFile: './src/utils/imgproxy-loader.ts',
+  },
   async rewrites() {
     const umamiUrl =
       process.env.UMAMI_API_ENDPOINT ||