feat(P4): precompute移植+app.js sources双向回填+回归1003/1003+验收体积/文件/data.json

site/details/mergedcelltable.json

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+{"slug":"mergedcelltable","contract":{"variants":["纵向合并","多级表头 + 纵向合并","横向合并"],"dims":[{"name":"mergeAxis","values":["vertical","horizontal"]},{"name":"headerLevel","values":["single","multi"]}],"unknowns":["合并列是否支持固定","合并字段的配置方式"],"anatomy":{"mergedCell":"合并单元格：垂直居中","rule":"合并规则可配置，纵向合并为主","header":"表头支持多级合并"},"doNot":["合并单元格的选中与编辑行为","排序/筛选与合并的交互规则"],"usage":["支持按字段合并相同内容单元格","合并规则可配置，纵向合并为主","合并后单元格垂直居中","表头支持多级合并","适用于报表、统计表格"],"structure":{"align":"垂直居中","defaultAxis":"纵向"}},"specLines":["- 支持按字段合并相同内容单元格","- 合并规则可配置，纵向合并为主","- 合并后单元格垂直居中","- 表头支持多级合并","- 适用于报表、统计表格"]}