/**
 * [WHO]: Versioned agent run checkpoints and the atomic checkpoint store port
 * [FROM]: No external dependencies
 * [TO]: Consumed by policy-driven approval pause/resume adapters
 * [HERE]: core/lib/agent-core/src/run-checkpoint.ts - serializable at-most-once checkpoint primitives
 */
export interface AgentRunCheckpoint {
    version: 1;
    id: string;
    createdAt: number;
    expiresAt?: number;
    policyId: string;
    /** Index of the next policy to evaluate after this checkpoint is approved. */
    resumePolicyIndex?: number;
    sessionId?: string;
    conversationBoundary?: {
        messageCount: number;
        assistantTimestamp?: number;
    };
    toolCall: {
        id: string;
        name: string;
        input: unknown;
    };
    metadata?: Record<string, unknown>;
}
export interface CheckpointStore {
    save(checkpoint: AgentRunCheckpoint): Promise<void>;
    consume(id: string, now?: number, validate?: (checkpoint: AgentRunCheckpoint) => boolean): Promise<AgentRunCheckpoint | undefined>;
    delete(id: string): Promise<boolean>;
}
export type CheckpointResolution = {
    status: "unavailable";
} | {
    status: "denied";
    checkpoint: AgentRunCheckpoint;
} | {
    status: "approved";
    checkpoint: AgentRunCheckpoint;
    toolCall: AgentRunCheckpoint["toolCall"];
};
/** Atomically consumes a checkpoint and turns the human decision into resume data. */
export declare function resolveRunCheckpoint(store: CheckpointStore, id: string, decision: "approve" | "deny", now?: number): Promise<CheckpointResolution>;
export declare class InMemoryCheckpointStore implements CheckpointStore {
    #private;
    save(checkpoint: AgentRunCheckpoint): Promise<void>;
    consume(id: string, now?: number, validate?: (checkpoint: AgentRunCheckpoint) => boolean): Promise<AgentRunCheckpoint | undefined>;
    delete(id: string): Promise<boolean>;
}