Agent Skills: postrboard-design

Apply the Postrboard design language — a refined, airy, code-native aesthetic used across postrboard.com and burkeholland.github.io — when designing or building any website, landing page, UI component, or web app. Use this skill whenever the user asks to design, style, or build a site and wants it to feel polished, modern, and developer-native. Trigger on phrases like "build me a site", "design a landing page", "make it look like postrboard", "use my design language", "create a new site", etc.