Drop these Windows binaries here before running build.sh for an offline installer:

  nssm.exe          https://nssm.cc/release/nssm-2.24.zip  (win64/nssm.exe)
  cloudflared.exe   https://github.com/cloudflare/cloudflared/releases/latest
                    (cloudflared-windows-amd64.exe)

If missing, install.ps1 will download them from the internet at install time.
