// Auto-generated stub — replace with real implementation
export type Message = any;
export type AssistantMessage = any;
export type AttachmentMessage<T = any> = any;
export type ProgressMessage<T = any> = any;
export type SystemLocalCommandMessage = any;
export type SystemMessage = any;
export type UserMessage = any;
export type NormalizedUserMessage = any;
export type RequestStartEvent = any;
export type StreamEvent = any;
export type SystemCompactBoundaryMessage = any;
export type TombstoneMessage = any;
export type ToolUseSummaryMessage = any;
export type MessageOrigin = any;
export type CompactMetadata = any;
export type SystemAPIErrorMessage = any;
export type SystemFileSnapshotMessage = any;
export type NormalizedAssistantMessage<T = any> = any;
export type NormalizedMessage = any;
export type PartialCompactDirection = any;
export type StopHookInfo = any;
export type SystemAgentsKilledMessage = any;
export type SystemApiMetricsMessage = any;
export type SystemAwaySummaryMessage = any;
export type SystemBridgeStatusMessage = any;
export type SystemInformationalMessage = any;
export type SystemMemorySavedMessage = any;
export type SystemMessageLevel = any;
export type SystemMicrocompactBoundaryMessage = any;
export type SystemPermissionRetryMessage = any;
export type SystemScheduledTaskFireMessage = any;
export type SystemStopHookSummaryMessage = any;
export type SystemTurnDurationMessage = any;
export type GroupedToolUseMessage = any;
export type RenderableMessage = any;
export type CollapsedReadSearchGroup = any;
export type CollapsibleMessage = any;
export type HookResultMessage = any;
export type SystemThinkingMessage = any;