The README gets a chapter on storage, accounts and live collaboration
that describes what is built (local vs server documents, flows, roles,
architecture, Yjs layer, channel protocol, data model, API, .env
configuration, security, open points). The planning document with its
outdated parts (guest accounts, y-rb, edit lock, phases) is removed.
CLAUDE.md collects commands, layout and the rules that are easy to break.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
