Use Topbar

This enforces Cognite's Aura topbar as the one true navigation component across Dune and Fusion apps. It's not about convenience, it's about compliance. The skill won't let you build a custom header if the shadcn install fails, which is aggressive but makes sense for design system governance. What's interesting is the auto-prompt hook it sets up in Cursor to trigger a topbar interview at the start of every session, basically nagging you into consistency. If you're working in Cognite's ecosystem, this removes the decision entirely. If you're not, it's a solid example of how to enforce component standards through tooling rather than documentation.