Paper Writer

Converts Design IR files into Paper MCP calls. Creates design artifacts in a Paper project using the serialized write order: tokens → styles → components → pages.

Non-negotiable Rules

1. Serialized writes — never parallelize MCP calls.
2. Registry updates — update registry.json after every successful write.
3. Idempotency — check registry.json before writing. Skip if hash matches.
4. Follow Paper API conventions — use Paper-native element types and properties.

Write Order

Phase 1: Tokens → Paper Design Tokens

Map IR tokens to Paper's token/variable system: