<!-- HARNESS MIRROR — do not edit here. Canonical source: skills/ or commands/. After editing source, copy into cli/assets/<harness / and repo-root harness mirrors. -- Context: this sub-skill is one lens of the broader skill. If the skill is also installed, read its SKILL.md first for Discovery + Anti-Slop + Craft Test, then apply the specific lens below. Adapt the UI at across devices. Load the skill and read . Work mobile-first. Don't shrink desktop; grow from mobile. Checklist: 1. Breakpoints — use project's existing system (Tailwind: ; CSS: container queries preferred over media queries f…