Changes:
- Updated portainer-stack.yml - npm-network commented out by default
- Updated docker-compose.yml - exposes ports on host for remote NPM
- Added REMOTE_NPM.md with configuration guide for remote NPM setup
- Added Cloudflare Tunnel as alternative option
- Added Tailscale/WireGuard mesh option
Ports 7575 and 3001 now accessible from other machines for NPM proxy
