Documentation audit across the repo found several places still describing
finished work as pending or in-progress (Authentik Stage 2, Element Call
fork, NetworkPolicies in TASKS.md's own Next Steps section, the Boje
troubleshooting entry). Also moves CLAUDE.md from the untracked parent
directory into the repo root and brings its content up to date, and
documents the new host-config/ pattern in README.md.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>