- buildTemplateWorkbook: 교각 · IP · 받침 sheets with the headers the parser
reads; value cells left empty so no blank-name rows raise E05
- dialog button 입력 템플릿 다운로드 (.xlsx)
- tests: sheet order, parser recognition, write-and-read round trip
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>