vaadin-flow-ui

Implements the UI layer of a use case (UC-XXX) as server-side Java with Vaadin Flow: @Route views inside the application layout, Grids with lazy data providers that call the service layer, forms with Binder and Bean Validation, dialogs and ConfirmDialogs, notifications with the messages the specification states, navigation, and view access control for the roles the use case names. Calls the service layer directly — or the repositories, when the project has no service layer — never a REST layer, never jOOQ or JPA in a view. Use when the user asks to "build the Vaadin view for UC-001", "implement the UI layer with Vaadin Flow", "create a Vaadin form", "add a grid for this use case", or mentions @Route views, Binder, server-side Java UI, or Vaadin Flow in a project that combines layer plugins. Normally run by /use-case-implement after the service layer; it can be run directly. For Hilla (React) views use /hilla-ui.