Design parity — reviewing code against its design

design-parity is a tool-neutral bot that proves a UI pull request is at parity with its intended design. On a UI PR it:

1. resolves which design reference matches the changed component,
2. renders the new code — the candidate — via compose-preview,
3. diffs candidate vs reference (visual + semantic + token),
4. posts a verdict in the PR — e.g. "implements Figma Button/Primary; padding 12dp vs spec 16dp; dark-theme contrast fails AA."

The candidate side is the upstream compose-preview renderer (the compose-preview skill). What design-parity owns is the reference side and the correspondence layer that decides which design maps to which code.

Source