Proposed boundaries—not callable services.

// PROPOSED INTERFACE — NOT A LIVE ENDPOINT
interface RegistryAdapter {
  createRecord(input: SyntheticAssetInput): Promise<AssetRecord>;
  appendEvent(recordId: string, event: LifecycleEvent): Promise<void>;
  getHistory(recordId: string): Promise<LifecycleEvent[]>;
}

This example shows where a registry implementation could sit. It is not a published package, compatibility promise, or live endpoint.

Publication gate

An interface becomes public only when its implementation, version, environment, authentication model, error behavior, security assumptions, compatibility policy, and source documentation can be inspected.