425d8bc4f3
Reconcile docs with the end-to-end pipeline fixes: - upload/download-artifact @v4 -> @v3 (Gitea GHES) in WORKFLOW-AUTHORING and workflow-example.yml; add Common Mistakes rows (v4, action ref form + DEFAULT_ACTIONS_URL, public action repo). - BEST-PRACTICES / README / HOST-SETUP: guest credential must live in the LocalSystem vault with a host-qualified username; document Set-CIGuestCredential.ps1 / Test-CIGuestWinRM.ps1 and auth=ntlm. - README / AGENTS / HOST-SETUP: production venv install is NON-editable (LocalSystem); no CI workflow may install into it. - HOST-SETUP: add DEFAULT_ACTIONS_URL=github + full-URL uses: + public repo + @main requirements discovered during validation. - Correct stale repo name local-ci-system -> local-ci-cd-system. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>