Use before editing
Ask Codex to read the DESIGN.md, identify affected files, and describe verification before touching UI code.
DESIGN.md for Codex
Use a DESIGN.md when Codex needs visual constraints before it changes a page, component, dashboard, or tool surface.
Keep scope small
Use the generated file as the source of truth for one visible surface at a time.
Verify after changes
Run browser checks for desktop, mobile, overflow, and console errors.