Appendix X: deml-ui Modern SaaS Migration
Superseded. Layout and migration guidance now lives in THEME.md, docs/DEML_UI.md, and deml-ui Storybook (ui.deml.app). Compose product pages with
app-banner→app-page-section→app-section-header→app-tile-board/ grids / cards. Viking-UI recipes (viking-*) are retired.