Lordpluha

Canonical FSD slice scaffolding — explains why sp-develop and .claude/templates own the initial shape of every new feature/, entity/, widget/, or views/ slice in the Next.js web player, and every new UI component in packages/ui-react, what each generated tree looks like (including the model/{schemas,dtos,responses} split and the client/server API class pair), and when to add real API methods or Zustand state versus leaving them out. Use whenever asked to create a new feature, entity, widget, or view slice in apps/web-player, a new component in packages/ui-react, or before hand-rolling any of those directories by hand.