- one workbook may hold the three tables on separate sheets (user decision, recorded in DOC/03_설계); spec 2.2 one-sheet-per-pier is superseded - E05 for rows whose 교각명 has no matching 교각 정보 row, or a pier missing IP/받침 - helper sheets (IP only, 받침 only) are shown as 보조 표 시트, not selectable - test: three-sheet workbook built from the P1 sheet Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>