Refactor refactoring-ui across web and Apple platforms

[sreejithraman]

Summary

• turn refactoring-ui into a shared visual-design entrypoint for web, SwiftUI, and UIKit
• preserve the existing web guidance in a routed reference and keep its token system as a fallback
• add Apple-platform guidance for native typography, color, layout, depth, accessibility, and verification
• support both implementation and advisory/token-system requests without expanding scope

Why

The skill claimed broad UI coverage but its instructions and values were web-specific. This split keeps the detailed web behavior while making the platform boundary and trigger description accurate.

User effect

Visual-design requests now load platform-appropriate guidance. Existing project design systems take precedence, and token-only requests no longer require implementation.

Verification

• python3 /Users/sree/.codex/skills/.system/skill-creator/scripts/quick_validate.py skills/refactoring-ui-skill
• python3 scripts/check_skills.py
• git diff --check HEAD^ HEAD
• three review-fix rounds with a fresh native reviewer and Gemini 3.1 Pro High; final round clean