/**
 * Task List Service - Centralized task listing logic
 *
 * REFACTORED: Extracted from TaskManager.listTasks() for Phase 4.
 * Handles task listing with filtering and history reading.
 *
 * @internal
 * @requirement REFACTOR-EXTRACT-TASK-CRUD-SERVICES - Phase 4: Extract Task CRUD Services
 */
import type { Task } from '@shadel/workflow-core';
import { TaskQueueManager } from './task-queue.js';
import { TaskMigration } from '../utils/migration.js';
/**
 * Task List Service
 *
 * Centralizes task listing logic with filtering and history reading.
 */
export declare class TaskListService {
    private queueManager;
    private migration;
    private contextDir;
    private migrationChecked;
    private getCurrentTask?;
    constructor(queueManager: TaskQueueManager, migration: TaskMigration, contextDir: string, getCurrentTaskFn?: () => Promise<Task | null>);
    /**
     * Check and run migration if needed (only once per instance)
     */
    private ensureMigration;
    /**
     * List tasks with optional filtering
     *
     * Lists tasks from queue system and task history.
     *
     * @param statusFilter Optional workflow state filter
     * @param limit Maximum number of tasks to return (default: 10)
     * @returns Array of tasks
     */
    listTasks(statusFilter?: string, limit?: number): Promise<Task[]>;
}