- new setup/upgrading.md: version rule, the two 0.2 boot refusals with
their fixes, behaviour changes, and what 0.2 adds since 0.1
- architecture module table lists all 28 modules
- WinterCMS map: cache and reorder are provided; rows for field types,
sanitizing, singletons, API tokens, CORS, Turnstile, menu item types
- configuration keys for CORS profiles, api_docs, auth.cookie, turnstile
- index, setup intro and frontend page link the new topics