/**
 * Compaction-queue flushing extracted from interactive-mode.
 *
 * When auto-compaction runs while the user has queued follow-up/steer messages,
 * `flushCompactionQueue` drains that queue after compaction settles — sending the
 * first non-command message as the resuming prompt, replaying steer/follow-up
 * modes for the rest, executing extension commands inline, and restoring the
 * queue on failure. It mutates the queue through a `CompactionQueueHost` seam
 * (`compactionQueuedMessages` via get/set); interactive-mode keeps a thin wrapper
 * (retained on the prototype for the compaction_end event handler).
 */
import type { ImageContent } from "@caupulican/pi-ai";
import type { AgentSession } from "../../core/agent-session.ts";
export type CompactionQueuedMessage = {
    text: string;
    mode: "steer" | "followUp";
    images?: ImageContent[];
};
export interface CompactionQueueHost {
    compactionQueuedMessages: CompactionQueuedMessage[];
    readonly session: Pick<AgentSession, "isStreaming" | "prompt" | "followUp" | "steer" | "clearQueue">;
    updatePendingMessagesDisplay(): void;
    showError(message: string): void;
    isExtensionCommand(text: string): boolean;
    refreshAutonomyFooterStatus(): void;
}
export declare function flushCompactionQueue(host: CompactionQueueHost, options?: {
    willRetry?: boolean;
}): Promise<void>;
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