Creates setup_env_windows.ps1 PowerShell script that:
- Provisions full Hyper-V VMs (not WSL2) for complete isolation
- Uses Ubuntu cloud images with cloud-init for automated setup
- Generates SSH keys for passwordless access
- Adds VMs to hosts file for easy <name>.local access
- Disables integration services by default for security
Hyper-V provides stronger isolation than WSL2:
- Separate kernel per VM
- Complete filesystem isolation (no /mnt/c mount)
- Own network stack (no firewall bypass)
- No ability to launch Windows programs from Linux
Also updates README with cross-platform quick start guides
and security comparison between WSL2 and Hyper-V.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>