refactor: .env as single config, remove nexusguard.conf.example, update docker-compose

setup.sh

@@ -28,16 +28,7 @@ else
     echo "[+] .env file already exists. Skipping environment generation."
 fi
 
-# 2. Config file generation
-if [ ! -f nexusguard.conf ]; then
-    if [ -f nexusguard.conf.example ]; then
-        echo "[+] Auto-generating nexusguard.conf from nexusguard.conf.example..."
-        cp nexusguard.conf.example nexusguard.conf
-        echo "[+] Config file created. All settings are commented out (env vars take precedence)."
-    fi
-else
-    echo "[+] nexusguard.conf already exists. Skipping config generation."
-fi
+
 
 # Make sure Docker Compose v2 is available
 if ! docker compose version &> /dev/null; then