dbfe3a7c66
- Fix 8 hlint hints across 6 files (unused pragma, newtype, lambda, redundant brackets/\$) - Add blank line after LANGUAGE pragma in Route.hs (fourmolu) - Fix HouseholdFormData deriving to use explicit strategies for newtype - Update AGENTS.md: require hlint clean before every commit, add pre-commit checklist (format, lint, build, test), update NB CSS URL to jsdelivr CDN