项目进度横道图绘制

About this Skill

This skill should be used when the user needs to generate construction schedule Gantt charts for building projects. It produces A4-landscape paginated Gantt charts (PNG) and Excel files with embedded timeline bars, hierarchical task breakdown (division → sub-division → work item), CPM critical path calculation, left-side schedule table with T+N date format, M1/M2/M3 month timeline, and per-page headers. Trigger phrases include "横道图", "施工进度计划", "甘特图", "Gantt chart", "施工计划图", "进度计划", "施工组织进度".