Captures the full picture of how the manifest engine works, why scripts
don't need self-heal entries (run from share), credential context
(SYSTEM = computer account, requires Mount-SFLDShare for file-level
reads), C:\Enrollment vs SFLD share copy distinction, and update
workflows. Written in response to a session that wasted time adding
redundant manifest entries because this wasn't documented.
Companion to scripts/diagnostics/Capture-LockdownState.ps1 and the
auditing script in pxe-images/Audit-SFLDShare.ps1.
Two new docs cover what the system is (boot chain, services, shares,
enrollment layout, data flow) and what to change per site (every
hardcoded value, where it lives, secrets handling).
scripts/mirror-from-gold.sh replicates content from an existing PXE
server (Operating Systems, drivers, packages, custom installers, BIOS,
PCDMIS, Blancco custom image, site-config) onto a freshly-installed PXE
server. Translates the legacy flat enrollment layout on the source into
the reorganized taxonomy (ppkgs/, pre-install/installers/, installers-
post/cmm/, blancco/, config/) on the destination. Tolerates rsync
exit 23 (permission-denied subdirs like the OpenText W10shortcuts dir
that is pxe-upload-group-only on legacy servers).
