/**
 * rag-index — RAG 索引管理命令
 *
 * 用法:
 *   speccore rag-index              # 显示当前 RAG 索引状态
 *   speccore rag-index --refresh    # 增量刷新（只重建变更文件）
 *   speccore rag-index --full       # 全量重建（删除旧索引，重新扫描）
 *   speccore rag-index --task Task-001  # 指定任务目录
 */
import { Command } from 'commander';
export interface RagIndexOptions {
    refresh?: boolean;
    full?: boolean;
    task?: string;
    iteration?: string;
}
export declare function ragIndexCommand(options: RagIndexOptions): Promise<void>;
export declare function registerRagIndexCommand(program: Command): void;
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