/**
 * [WHO]: humanizerExtension - bundles the "humanizer" writing-quality skill as a Catui default-loaded extension
 * [FROM]: Depends on node:fs, node:path, node:url, core/extensions-host/types
 * [TO]: Auto-loaded by builtin-extensions.ts as a default extension; resource_loader scans the bundled SKILL.md via resources_discover
 * [HERE]: extensions/builtin/humanizer/index.ts - third-party skill bundle wrapper
 *
 * The skill content under ./SKILL.md was vendored from the upstream "humanizer" Agent Skill
 * (github.com/blader/humanizer, v3.0.0, MIT). See THIRD_PARTY_NOTICE.md for attribution and license.
 *
 * The skill removes AI-writing tells from prose (not-X-but-Y contrasts, one-line closers, forced
 * triads, AI-word habits, chat residue) without changing meaning and without inventing facts.
 * It is a writing-quality skill grounded in Wikipedia's public "Signs of AI writing" guide —
 * it is NOT about evading AI-content detectors.
 *
 * This wrapper registers the skill via resources_discover only (on-demand loading through the
 * `skill` tool), so the 8KB skill body never enters the default system prompt. The bootstrap
 * note stays short because every catalogued skill's name and description already reach the
 * default prompt through the skill catalog; this note only states the routing boundary.
 */
import type { ExtensionAPI } from "../../../core/extensions-host/types.js";
export declare const HUMANIZER_BOOTSTRAP_PROMPT: string;
export default function humanizerExtension(api: ExtensionAPI): Promise<void>;