export type TaskCollaborationKind = 'progress' | 'question' | 'answer' | 'instruction' | 'ack' | 'result' | 'failure';
export type TaskCollaborationAuthor = 'main_agent' | 'worker_agent' | 'user' | 'system';
export interface TaskCollaborationEntry {
    id: string;
    taskId: string;
    taskRunId?: string;
    assignmentEpoch?: number;
    sequence: number;
    authorKind: TaskCollaborationAuthor;
    authorId: string;
    kind: TaskCollaborationKind;
    body: string;
    causationId?: string;
    createdAt: number;
    deliveryStatus?: 'pending' | 'delivered' | 'confirmed' | 'stale';
}
export declare class TaskCollaborationRepository {
    list(taskId: string, afterSequence?: number, limit?: number): TaskCollaborationEntry[];
    recent(taskId: string, beforeSequence?: number, limit?: number): TaskCollaborationEntry[];
    get(entryId: string): TaskCollaborationEntry | undefined;
    latest(taskId: string): TaskCollaborationEntry | undefined;
    append(input: {
        taskId: string;
        taskRunId?: string;
        authorKind: TaskCollaborationAuthor;
        authorId: string;
        kind: TaskCollaborationKind;
        body: string;
        causationId?: string;
        idempotencyKey: string;
        deliverToWorker?: boolean;
    }): TaskCollaborationEntry;
    pendingDeliveries(limit?: number): Array<{
        entry: TaskCollaborationEntry;
        clientMessageId: string;
    }>;
    pendingMainUpdates(limit?: number): Array<{
        entry: TaskCollaborationEntry;
        conversationId: string;
        decision?: 'notify' | 'silent';
        decisionReason?: string;
    }>;
    decideMainUpdate(entryId: string, decision: 'notify' | 'silent', reason: string): void;
    hasNewerMainUpdate(taskId: string, sequence: number): boolean;
    hasSubmittedMainUpdate(entryId: string): boolean;
    markMainUpdateDelivered(entryId: string): void;
    deferMainUpdate(entryId: string, delayMs?: number): void;
    markDelivered(entryId: string, conversationId: string, assignmentEpoch: number): void;
    markConfirmed(entryId: string): void;
    markStale(entryId: string): void;
    defer(entryId: string): void;
}