- replace Vite template README with project-specific guide
- 3 sections: 수정 / 빌드 / 배포 방법
- two deployment strategies (new-name vs same-name swap) with strict
  ordering to avoid keycloak in-memory cache mismatch
- explicit warning that file browser must receive the sureflow-theme
  folder itself, not a zip
- keycloak server-side checklist (restart, Themes, Localization, IdP,
  Clients) + 동작 확인 checkbox
- troubleshooting table for common deployment failures

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