chore: add gzip and cache headers in nginx for static assets

frontend/nginx.conf

@@ -4,6 +4,21 @@ server {
     root /usr/share/nginx/html;
     index index.html;
 
+    # Gzip compression for text assets
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_types text/plain text/css text/xml application/json application/javascript application/xml+rss application/atom+xml image/svg+xml;
+
+    # Cache static assets aggressively
+    location ~* \.(jpg|jpeg|png|gif|ico|css|js|pdf|woff|woff2|ttf|eot)$ {
+        expires 30d;
+        add_header Cache-Control "public, immutable";
+        access_log off;
+    }
+
     location / {
         try_files $uri $uri/ /index.html;
     }