/**
 * Research CLI Handler — SPEC-04
 *
 * Handles the `research` command and all its subcommands:
 *   add, list, show, link, verify-list, sync
 */
import type { ParsedArgs, OutputFormatter } from '../types.js';
import type { NovelWriterExtension } from '../../index.js';
/**
 * Entry point for the `research` command.
 */
export declare function handleResearchCommand(args: ParsedArgs, projectPath: string, output: OutputFormatter, extension?: NovelWriterExtension): Promise<void>;
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