What problem does it solve? Animation and motion code often ships with subtle craft defects — sluggish easing, wrong transform origins, non-GPU properties, missing reduced-motion handling — that general code reviews miss. This Skill applies a rigorous, opinionated review bar to catch feel-breaking motion regressions before they ship. ## Core Features & Use Cases - Standards-Based Review: Evaluates every animation in a diff against ten non-negotiable standards covering easing, duration, origin, interruptibility, GPU-only properties, accessibility, and cohesion. - Structured Findings Output: Produces a Before/After/Why findings table plus a verdict grouped by impact tier, ending in an explicit Block or Approve decision with file:line citations. - Precise Value Citations: Pulls exact easing curves, duration budgets, and spring configs from STANDARDS.md instead of approximating. - Use Case: A developer opens a pull request adding a dropdown menu animation. Run this Skill to flag the ease-in curve, the transform-origin: center on a trigger-anchored popover, and the missing prefers-reduced-motion handling, with concrete replacement values. ## Quick Start Review the animation and motion code in my current diff and give me the findings table and verdict.
