chore: Comment out external network for local testing

- nginx-proxy-manager network only needed in production
- Allows local docker compose up without external dependencies

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -17,7 +17,7 @@ services:
       - 801:80
     networks:
       - default
-      - nginx-proxy-manager_npm_network
+      # - nginx-proxy-manager_npm_network  # Commented for local testing
     environment:
       - TESTING=False
       - LOG_LEVEL=${LOG_LEVEL}