deploy-all.ps1 chains deploy-host.ps1 + build-web.ps1 so a full redeploy is
one command; stops before the web step if the host build/start fails.
build-web.ps1's post-restart check was probing http:// while web-run.cmd
serves HTTPS-only, so it always reported a false failure - probe https via
curl.exe (no -SkipCertificateCheck on the Windows PowerShell 5.1 this runs
under) with a short retry loop for the task's cold start instead.
