Move 16 .ps1 files to scripts/archived/ — they have no live caller:
- 10 pure shims (New-BuildVM, Remove-BuildVM, Cleanup-OrphanedBuildVMs,
Wait-VMReady, Invoke-RemoteBuild, Get-BuildArtifacts, Watch-DiskSpace,
Watch-RunnerHealth, Get-CIJobSummary, Invoke-CIJob) that only forwarded
to `ci_orchestrator`; the live Gitea composite action now calls
`python -m ci_orchestrator job` directly.
- 6 Phase-C host tools reimplemented natively in Python (Start-BurnInTest
[+ -Linux], Test-CapacityBurnIn → bench; Test-Smoke → smoke run;
Validate-HostState → validate host; Set-CIGuestCredential → creds set).
Add scripts/archived/README.md mapping each file to its `ci` replacement,
and exempt scripts/archived/ from the PSScriptAnalyzer lint job.
Kept (still used / not yet ported): Register-CIScheduledTasks,
Backup-CITemplate, Invoke-RetentionPolicy, Set-TemplateSharedFolders,
Test-CIGuestWinRM, the e2e build harnesses, and all template/ guest
provisioning scripts.
