Vision-first product sites
Render the product you can see in your head as a marketing site, docs site, and live screens — before writing a line of app code.
You describe the product; Northstar renders it as marketing pages, reference docs, and screen components. You iterate conversationally until the site matches the picture in your head — that’s Gate 1, vision lock. Buildability is irrelevant at this gate.
Marketing pages show happy paths. The docs carry spec weight: every
screen and every state — empty, error, permissions, edge cases — is
enumerated in /docs. That discipline is what prevents the
beautiful-facade failure mode.
During the vision phase the agent never writes app code, and aesthetic tweaks are deflected into decision records unless they’re semantic — a missing danger state, a layout that misrepresents the feature.