# [Piece name] — Build Specification

## Purpose and scope

<!-- What this piece is. State explicitly what it is not. -->

## Data model or content structure

<!-- The shape of the content or data this piece renders. -->

## Screens and states

<!-- Enumerate every screen and every state. One per line. -->

## Interactions and transitions

<!-- How the piece responds to input, and how it moves between states. -->

## Visual direction

<!-- Reference existing components and tokens. Do not invent a new system. -->

## Acceptance criteria

<!-- Testable statements. Each one must be verifiable as pass or fail. -->

## Out of scope

<!-- What this piece must not do. Stops the build inventing adjacent features. -->