Full Cancelation Notification Support #100
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Add MCP Cancellation Notification Support
Implements support for the MCP protocol's
notifications/cancelledmessage, enabling servers to cancel long-running client operations.Changes
CancellableOperation- Thread-safe wrapper for cancellable operations that executes work in separate threadsNotifications::Cancelled- Sends cancellation notifications to servers with request ID and reasonNotificationHandler- Processes incomingnotifications/cancelledmessages and triggers cancellationClient#cancel_in_flight_request- Cancels in-flight operations by request IDErrors::RequestCancelled- New error type for signaling cancelled requestsEnables servers to interrupt client operations like sampling requests that are taking too long or are no longer needed.