/**
 * Host-local engine generation lifecycle.
 *
 * A dead engine child cannot send a protocol frame, so generation death can
 * never be a wire message: SIGKILL, spawn errors, closed stdin, and malformed
 * JSONL all have to be observed by the host. `RpcClient` publishes this event
 * synchronously, before any restart work, so host controllers can tear down
 * exactly the dead generation without waiting for a later `engine_ready`.
 */
export type InteractiveEngineGenerationEndKind = "exit" | "process-error" | "stdin-error" | "transport-error" | "explicit-stop";
export interface InteractiveEngineGenerationEnded {
    /**
     * The generation that ended. Remote component IDs restart at
     * `remote_component_1` for every child, so stale teardown must never close a
     * mount owned by a newer generation.
     */
    generation: number;
    /** Concrete cause, used for pending-request rejection and recovery notices. */
    error: Error;
    kind: InteractiveEngineGenerationEndKind;
    /**
     * True for host-initiated termination (explicit stop, deliberate generation
     * replacement, shutdown). Automatic recovery must only run for unexpected
     * loss, never for ordinary shutdown.
     */
    expected: boolean;
}
export type InteractiveEngineGenerationEndedListener = (event: InteractiveEngineGenerationEnded) => void;
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