Building an AI-Assisted React Native UI Kit — Why Tokens Beat Pixels in the Age of Copilot

We're in an era where developers write UI with AI. You describe a screen, Claude or Copilot generates the code, and you ship it. But there's a gap nobody talks about: AI-generated UI is inconsistent. Ask it to build a login screen — it picks padding: 16. Ask it to build a settings screen — it picks padding: 20. Ask it for a card — borderRadius: 8. Another card — borderRadius: 12. Same app, different screens, zero consistency. The problem isn't the AI. It's that there's no vocabulary to constr...