- README: packages/ui in folder table, /design route mention,
  5-channel data sharing matrix, updated quick start with the new
  pnpm install + per-module dev ports, deploy.sh flow with the
  patch script step.
- ARCHITECTURE: new "Design system" + "Federation singleton scope" +
  "데이터 공유 채널 정리" sections; mention patch-remote-config.mjs
  in the server-update.sh build flow.
- DEVELOPER_GUIDE: new §5b explaining how external modules import
  from @mf-platform/ui without any setup (server build patches their
  vite.config); two new troubleshooting rows for "Cannot find module"
  and "loaded twice".
- PUSH_REMOTES: header note about auto-patch; expanded daily-flow
  steps to show the patch step explicitly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>