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/backtotop.json

@@ -0,0 +1 @@
+{"slug":"backtotop","contract":{"variants":["带进度环","无进度环","自定义位置"],"dims":[{"name":"progress","values":["ring","none"]},{"name":"position","values":["bottom-right","custom"]}],"unknowns":["按钮尺寸与距边距","进度环的线宽"],"anatomy":{"trigger":"页面滚动超过 400px 时出现","button":"右下角悬浮按钮","ring":"可带进度环显示滚动进度","action":"点击平滑滚动回顶部"},"doNot":["进度环的渐变配色"],"usage":["页面滚动超过 400px 时出现","右下角悬浮按钮","点击平滑滚动回顶部","可带进度环显示滚动进度","支持自定义位置、样式"],"structure":{"appearAt":"400px","position":"右下角悬浮"}},"specLines":["- 页面滚动超过 400px 时出现","- 右下角悬浮按钮","- 点击平滑滚动回顶部","- 可带进度环显示滚动进度","- 支持自定义位置、样式"]}