- Developed `XAIWebsocketsExecutor` for handling xAI Responses via WebSocket transport. - Introduced session and state management with `codexWebsocketSessionStore` and `xaiWebsocketIDStateStore`. - Added robust ID mapping for upstream and downstream request/response sequences. - Enhanced error propagation and handling of WebSocket terminal events. - Included utility methods for WebSocket request preparation, connection management, and state tracking. - Added foundational support for compact and streamed responses via enhanced session tracking.