Completes the full depth pass across all 16 docs - real tech names,
why-this-vs-the-alternative reasoning, heavy cross-linking between
every doc, ranked/specific tradeoffs instead of generic hedges.
Completes the docs/ set - all 16 systems now have a full deep-dive
page in the diagram+callout+table style. Architecture overview covers
the 4 trust boundaries and 2 traffic planes; IaC pipeline is a fresh
Packer->Terraform->Ansible writeup replacing the stale old-content/
snapshot; disaster recovery covers the 3 independent backup layers
and the deliberately decoupled OS/app upgrade systems.
thesabear