fix: tool icons are missing (#15241)

docker/nginx/conf.d/default.conf.template

     listen ${NGINX_PORT};
     server_name ${NGINX_SERVER_NAME};
 
+    # Rule 1: Handle application entry points (preserve /app/{id})
+    location ~ ^/app/[a-f0-9-]+$ {
+      proxy_pass http://api:5001;
+      include proxy.conf;
+    }
+
+    # Rule 2: Handle static resource requests (remove /app/{id} prefix)
+    location ~ ^/app/[a-f0-9-]+/(console/api/.*)$ {
+      rewrite ^/app/[a-f0-9-]+/(.*)$ /$1 break;
+      proxy_pass http://api:5001;
+      include proxy.conf;
+    }
+
     location /console/api {
       proxy_pass http://api:5001;
       include proxy.conf;