/**
 * Todo persistence service
 * Handles loading and saving todos to .yolo/todos.json
 */
import type { TodoList, Todo } from '../types/index.js';
/**
 * Load todos for a working directory
 *
 * @param workingDirectory - Absolute path to working directory
 * @returns TodoList or null if no todos file exists
 */
export declare function loadTodos(workingDirectory: string): Promise<TodoList | null>;
/**
 * Save todos for a working directory
 *
 * @param workingDirectory - Absolute path to working directory
 * @param todos - Array of todo items
 * @throws Error if save fails
 */
export declare function saveTodos(workingDirectory: string, todos: Todo[]): Promise<void>;
/**
 * Get todo counts by status
 *
 * @param todos - Array of todo items
 * @returns Object with counts for each status
 */
export declare function getTodoCounts(todos: Todo[]): {
    pending: number;
    in_progress: number;
    completed: number;
};
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