export interface RecentFailure {
    id: string;
    platform: string;
    error: string;
    attempts: number;
}
export interface TaskQueueStats {
    pending: number;
    processing: number;
    completed_last_hour: number;
    failed_last_hour: number;
    oldest_pending_age_seconds: number;
    waiting_campaigns: number;
    active_a2a_continuations: number;
    oldest_active_a2a_age_seconds: number;
    terminal_a2a_without_delivery: number;
    recent_a2a_orphans: Array<{
        continuation_id: string;
        integration_task_id: string;
        status: string;
        attempts: number;
        age_seconds: number;
        reason_class: string;
    }>;
    recent_failures: RecentFailure[];
    recent_tasks: Array<{
        id: string;
        platform: string;
        status: string;
        attempts: number;
        dispatch_attempts: number;
        last_dispatch_outcome: string | null;
        age_seconds: number;
    }>;
}
export interface TaskQueueStatsScope {
    ownerEmail: string;
    orgId: string | null;
}
export declare function getTaskQueueStats(scope: TaskQueueStatsScope): Promise<TaskQueueStats>;