theta-env's GitHub Pages site (docs/, Jekyll) was already configured and
live at https://theta42.github.io/theta-env/ but nothing in the README
linked to it, unlike proxy and sso-manager-node's READMEs -- easy to miss
entirely. Add the same top-of-README Documentation link, plus screenshots
of the composed stack (SSO dashboard + proxy host list from one
./setup.sh run). Also fixes a stale docs/index.md quickstart snippet that
said "set CFG_BASE_DN to your domain" -- CFG_DOMAIN is the actual
required variable (CFG_BASE_DN is an advanced override); everywhere else
in the docs already says CFG_DOMAIN correctly.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
