import type { SourceExportConfig } from "../types/config.js";
import { BridgeClient } from "../source/bridge-client.js";
export interface PluginDownloadTask {
    nodeId: string;
    nodeName: string;
    canonicalName: string;
    outputPath: string;
    settings: SourceExportConfig;
}
export interface PluginDownloadResult {
    task: PluginDownloadTask;
    outputPath: string;
    contentHash: string;
    sizeBytes: number;
    width?: number;
    height?: number;
}
export declare class PluginAssetDownloader {
    private readonly bridge;
    constructor(bridge: BridgeClient);
    downloadAssets(expectedFileKey: string, tasks: PluginDownloadTask[], onProgress?: (current: number, total: number) => void): Promise<PluginDownloadResult[]>;
    preflight(expectedFileKey: string, task: Omit<PluginDownloadTask, "outputPath">): Promise<void>;
    private validateResult;
    private validateIdentity;
    private assertImageSignature;
}