RELEASE

This release adds an on_stream_result hook to SchemaExtension for extension authors who need to inspect or mutate GraphQL results before they reach a streaming transport.

The hook wraps subscription events and queries or mutations sent over WebSockets, SSE, or multipart responses. On transports that support experimental incremental execution, it also wraps each incremental-delivery frame.

Strawberry's built-in MaskErrors extension now uses the hook so streamed query, mutation, subscription, incremental-delivery, and pre-execution errors are masked before being sent to clients.