After a memory-heavy parallel build the guest can momentarily fail to
launch wsmprovhost (WSManFault 1018), which broke artifact collect
(now does Compress-Archive + fetch over WinRM). run() retries up to 4x
with exponential backoff on transient WSMan markers, dropping the
cached shell so a fresh one is opened once the guest recovers.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
pypsrp defaults to auth='negotiate', which attempts Kerberos with no
domain and fails under SSPI with SEC_E_UNKNOWN_CREDENTIALS for the
workgroup ci_build account. Default to 'ntlm' (configurable). The
guest username must be host-qualified (WINBUILD-2025\ci_build) and
stored that way in the credential vault.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>