/**
 * Pixabay Image Fetching
 *
 * Fetches stock photos from Pixabay for generic activities.
 * Requires API key. Images must be downloaded (no permanent hotlinking).
 *
 * API: https://pixabay.com/api/docs/
 */
import type { ResponseCache } from '../caching/types';
import type { GeocodedActivity } from '../types/place-lookup';
import type { ImageResult } from './types';
/**
 * Fetch Pixabay image for an activity.
 *
 * Builds search query from activity fields and returns best match.
 */
export declare function fetchPixabayImage(activity: GeocodedActivity, apiKey: string, cache: ResponseCache): Promise<ImageResult | null>;
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