/**
 * The `TaskSpec.images` INLINE arm's admission: the same byte admission a file the Read tool serves passes
 * (image-admission.ts) — a claimed type the API accepts, within the raw cap, that type's signature, under
 * the provider's base64 limit. Without it a mis-declared image rode straight to the provider and 400'd the whole
 * request. Like the Read lane it checks the SIGNATURE, not decodability: a file cut short after its signature
 * passes (KL-1311a-c). No downsampling here: this arm only refuses what would not survive the wire, and a
 * valid image reaches the model unchanged. The block is built from the bytes that were checked.
 */
import type { ImageContent } from "../../internal/llm.js";
import type { ImageInput } from "../types.js";
/** Admit one inline entry (`{ data, mimeType }`) or throw `config.image_invalid`. */
export declare function admitInlineImage(img: Extract<ImageInput, {
    data: string;
}>): Promise<ImageContent>;