/**
 * gen-image handler — POST ab-api /model/genImg.
 *
 * Thin forwarder: the model roster, defaults, size presets and reference-image
 * caps all come from ab-api's capabilities catalog (see capabilities.ts), not
 * from this package. Behavior:
 *   - --model accepts a friendly alias or a full id; resolved against the catalog
 *     (ab-api also resolves aliases server-side, so an unknown value still passes
 *     through and is validated by the backend).
 *   - --size accepts a WxH string (→ width/height) or an aspect-ratio preset key
 *     (→ aspectRatio; for Seedream models ab-api maps the preset to pixels).
 *   - --resolution is accepted but inert: it only ever fed the Gemini `size` tier,
 *     and Gemini is not wired up on the gateway, so we no longer send it.
 *   - Reference images: HTTPS URLs and data: URIs pass through; local paths are
 *     read and base64-encoded into a data: URI.
 *   - Async response (generationId + status:'generating'/'pending') is polled
 *     against /model/getImgStatus until completed/failed/timeout.
 */
import type { HandlerContext, HandlerInput } from './index.js';
export declare function genImage(input: HandlerInput, ctxIn: HandlerContext): Promise<void>;