What problem does it solve? iOS interfaces often compile and pass review yet feel stiff, janky, or haptically empty. This Skill diagnoses animation feel, haptic coverage, and rendering performance in SwiftUI/UIKit code and produces a unified, prioritized optimization report. ## Core Features & Use Cases - Parallel specialist dispatch: Runs an animation-haptics-engineer (spring parameters, timing, haptic placement, Reduce Motion) and a performance-engineer (body evaluation, scroll, image handling, rendering) over the same scope, then merges and cross-references their findings. - Verdict-based report: Emits animation, haptic, and performance verdicts (e.g., FLUID / STIFF / JANKY), a haptic coverage map, exact spring parameter recommendations, concrete performance rewrites, and top-3 priority actions. - Flexible scoping and ledger deltas: Targets uncommitted changes, staged files, specific paths, or the whole project, and writes a review ledger so subsequent runs report NEW / RESOLVED / STILL OPEN / REGRESSED findings. - Use Case: After implementing a custom transition, ask to optimize the changed files; the Skill flags a spring that causes scroll hitches, suggests compromise parameters, and maps missing haptics on key interactions. ## Quick Start Ask the assistant to optimize the animations and haptics in your current iOS changes, for example by saying "optimize my iOS UI animations and fix the scroll jank in this diff".
