Compile references into a design grammar

Registry-first artifact boundary

When .styleseed/project.json and .styleseed/artifacts/index.json exist, resolve the requested artifact ID first, then read only .styleseed/bundles/<artifact-id>.md and .styleseed/manifests/<artifact-id>.json. Never fall back to the global legacy bundle for a registry project. Legacy projects may use .styleseed/effective-rules.md only when no registry exists.

Do not merely imitate the supplied screen. Read PRODUCT-PRINCIPLES.md, RULESETS.md, ADAPTERS.md, and REFERENCE-COMPILER.md, then execute the compiler pipeline in full.

Workflow