pipecat/changelog/4093.fixed.md

• Fixed Genesys AudioHook serializer to always include the parameters field in protocol messages. The AudioHook protocol requires every message to carry a parameters object (even if empty), but _create_message omitted it when no parameters were provided. This caused clients that validate message structure (including the Genesys reference implementation) to reject pong and parameter-less closed responses, breaking server sequence tracking and preventing outputVariables from reaching the Architect flow.