/**
 * `memi update [registry]` — reinstall every component we previously
 * installed from a registry, pulling the latest versions.
 *
 * Matches installed components by reading specs in `.memoire/specs/components/`
 * that originated from a registry install (inferred by spec matching a remote
 * registry's component set).
 *
 * Examples:
 *   memi update @acme/design-system         # update only components from this registry
 *   memi update                             # update all registry-sourced components (reads --from from package.json or prompts)
 */
import type { Command } from "commander";
import type { MemoireEngine } from "../engine/core.js";
export interface UpdatePayload {
    status: "updated" | "failed" | "empty";
    registry: string;
    version: string;
    updated: string[];
    skipped: string[];
    errors: Array<{
        component: string;
        error: string;
    }>;
    elapsedMs: number;
}
export declare function registerUpdateCommand(program: Command, engine: MemoireEngine): void;