export interface ClassifyInterruptInput {
    /** The new user message sent while the agent is running. */
    message: string;
    /**
     * Current agent activity summary derived from the last few SSE trace event names
     * (e.g. "tool_start: discover_opportunities, graph_start: opportunity").
     */
    agentState: string;
}
/**
 * Binary classifier that decides whether a mid-stream user message should steer
 * (interrupt the current run) or queue (buffer until the run completes).
 * Uses a low-temperature, minimal-token model for sub-1 s latency.
 */
export declare class ChatInterruptClassifier {
    private model;
    constructor();
    /**
     * Classify a mid-stream interrupt as steer or queue.
     *
     * @param input - The new message and current agent state context
     * @returns "steer" to interrupt the current run; "queue" to buffer
     */
    classify(input: ClassifyInterruptInput): Promise<"steer" | "queue">;
}