/**
 * RunCheckpoint — persists member run state after each reasoning step.
 *
 * Enables resuming interrupted runs via `agenthood run --resume <id>`.
 * Checkpoints are stored as JSON files in `.agenthood/checkpoints/`.
 */
export interface CheckpointMessage {
    role: 'system' | 'user' | 'assistant' | 'tool';
    content: string;
    toolCallId?: string;
    toolCalls?: {
        id: string;
        name: string;
        args: unknown;
    }[];
}
export interface CheckpointUsage {
    promptTokens: number;
    completionTokens: number;
    totalTokens: number;
}
export interface CheckpointData {
    id: string;
    member: string;
    task: string;
    step: number;
    messages: CheckpointMessage[];
    usage: CheckpointUsage;
    model: string;
    activatedSkills: string[];
    status: 'running' | 'completed' | 'failed' | 'interrupted';
    createdAt: string;
    updatedAt: string;
}
/** The subset of RunCheckpoint the runner depends on — hosts may substitute their own store. */
export interface CheckpointStore {
    load(id: string): CheckpointData | undefined;
    save(data: CheckpointData): void;
    updateStatus(id: string, status: CheckpointData['status']): void;
}
export declare class RunCheckpoint {
    private dir;
    constructor(cwd: string);
    save(data: CheckpointData): void;
    load(id: string): CheckpointData | undefined;
    list(): CheckpointData[];
    updateStatus(id: string, status: CheckpointData['status']): void;
    prune(ttlDays?: number): number;
    static generateId(correlationId: string): string;
}
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