Phase A4 of plans/implementation-plan-A-B.md. Implements the full job orchestrator (clone -> start -> wait -> probe -> build -> collect -> guaranteed cleanup) as a new commands/job.py click command, registered under python -m ci_orchestrator job. Backend selection goes through backends.load_backend(config) so Phase C can swap in remote drivers without touching the command. The legacy scripts/Invoke-CIJob.ps1 is replaced by a thin PS 5.1 shim that delegates to the Python CLI; tests/python/test_commands_job.py adds 13 cases covering Linux/Windows happy paths, override application, skip-artifact, and cleanup on every failure mode.
Four test files under tests/ using fake vmrun.cmd (exit code via
%FAKE_VMRUN_EXIT% env var) — no VMware or network dependency:
_Common.Tests.ps1 — New-CISessionOption TLS flags, Resolve-VmrunPath
throw/return, Invoke-Vmrun ExitCode/Output/ThrowOnError
New-BuildVM.Tests.ps1 — throw on missing template, throw+cleanup on clone
failure, Clone_{JobId}_{timestamp} name format
Remove-BuildVM.Tests.ps1 — no-op on missing VMX, partial dir cleanup,
-WhatIf preservation, full destroy removes dir
Wait-VMReady.Tests.ps1 — throw on missing vmrun, timeout throw,
IP ValidatePattern accept/reject
Run: Invoke-Pester tests\ -Output Detailed
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>