LLM GraphQL Mocks Land at Airbnb, Expedia

Expedia Group open-sourced mockql-rs, a Rust CLI filling @mock-annotated GraphQL fields with LLM-generated data at request time. It follows Airbnb's @generateMock from April and a GraphQL Foundation RFC from February. All three solve the same problem with different architectures, and two use the same directive name with incompatible semantics.