Unify loopback ops, hop testing, and reading order. Overview lists
high-level docs first, then architecture, then the rest. Credits:
Scott Lindsey, George Lambert, NATS.IO, Grok-Code by Grok.com.
High-level system map with diagrams, TOC, and a docs index. Template
worker shows how to add a new verae.* address for search, storage, or
unplanned functions without teaching Zapier NATS.
