/**
 * [WHO]: SubAgent extension, registers /subagent commands and message renderer
 * [FROM]: Depends on @catui/tui, core/extensions-host/types, ./subagent-runner, ./subagent-parser, ./subagent-types
 * [TO]: Consumed by builtin-extensions.ts as default extension
 * [HERE]: extensions/builtin/subagent/index.ts - entry point for subagent extension
 */
import type { ExtensionAPI } from "../../../core/extensions-host/types.js";
export default function subagentExtension(api: ExtensionAPI): Promise<void>;