/**
 * Task Update Service - Centralized task update logic
 *
 * REFACTORED: Extracted from TaskManager.updateTask() for Phase 4.
 * Handles task updates, queue management, file sync, and context injection.
 *
 * @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 { ContextInjector } from './context-injector.js';
import { RuleManager } from '../utils/rule-manager.js';
import { TaskMigration } from '../utils/migration.js';
/**
 * Task update options
 */
export interface TaskUpdateOptions {
    goal?: string;
    addReq?: string;
}
/**
 * Task Update Service
 *
 * Centralizes task update logic with queue management, file sync, and context injection.
 */
export declare class TaskUpdateService {
    private queueManager;
    private contextInjector;
    private ruleManager;
    private migration;
    private taskFile;
    private migrationChecked;
    private getCurrentTask;
    private syncFileFromQueue;
    constructor(queueManager: TaskQueueManager, contextInjector: ContextInjector, ruleManager: RuleManager, migration: TaskMigration, taskFile: string, getCurrentTaskFn: () => Promise<Task | null>, syncFileFromQueueFn: (queueTask: any, preserveFields: string[]) => Promise<void>);
    /**
     * Check and run migration if needed (only once per instance)
     */
    private ensureMigration;
    /**
     * Update task details
     *
     * @requirement REQ-V2-003 - Task update (NEW v2.0)
     *
     * @param taskId Task ID to update
     * @param updates Update options (goal, addReq)
     * @throws Error if task not found or not active
     */
    updateTask(taskId: string, updates: TaskUpdateOptions): Promise<void>;
}