hilla-ui

Implements the UI layer of a use case (UC-XXX) with Hilla: a @BrowserCallable endpoint that delegates to the service layer, and a React/TypeScript view under src/main/frontend/views/ with file-based routing, Vaadin React components, useForm validation from the generated models, and the messages the specification states. The endpoint is Hilla's API and belongs to this layer; it holds no business logic. Use when the user asks to "build the Hilla view for UC-001", "implement the UI layer with Hilla", "create a React view for Vaadin", "create a @BrowserCallable endpoint", or mentions Hilla, TSX views, file-based routing, or useForm in a project that combines layer plugins. Normally run by /use-case-implement after the service layer; it can be run directly. For server-side Java views use /vaadin-flow-ui.