layout 5

DSH Web workbench base: a VSCode-style layout shell (activity bar, side bar, editor area, panel, status bar) with a registry service (ctx.workbench) that feature plugins use to mount panels, editor views, activity items, status items and commands.

DSH web sidebar footer action ordering: force the sidebar.footer.action slot into a vertical stack (display: contents → flex column) and let users configure the top-to-bottom order of the entries.

DSH web shell mobile adapter plugin: overlay sidebar/details drawers, responsive composer and settings below 768px, zero desktop regression. DSH Web 移动端适配插件:抽屉浮层化、输入栏与设置页响应式适配,桌面零回归。

构图法则参考：摄影、绘画与界面布局通用的构图知识库（三分法、对称、引导线等），辅助画面与界面设计决策

栅格与间距系统参考：8 点栅格、响应式断点与间距规范知识库，指导界面布局设计（Grid & spacing system reference for DSH）