One element = a single-file download (e.g. Chaika/EHentai-style plugins, which resolve one
real download URL); more than one element = a multi-resource download (e.g. Pixiv's per-page
images), assembled per the plugin's PluginOptionsResult.bundle_as_archive
setting.
Usage
import { type DownloadResult } from "crates/lanrurugi-plugin/dispatcher/plugin-sdk.ts";