/**
 * Vision routing — look-at-image turns go through a same-family
 * `call_agent` child (backend=vision), then the child's result is
 * appended onto the parent prompt. The parent model stays on its
 * text SKU and never receives image bytes.
 *
 * This is a router, not a prompt heuristic: the parent LLM does not
 * decide whether to spawn. Disable with AGIM_VISION_ROUTE=off.
 */
import { callAgentByName } from '../../../core/a2a.js';
import { resolveSubagentSpawn } from '../../../core/subagent.js';
import type { AgentSendOpts } from '../../../core/types.js';
export declare const VISION_ROUTE_RESULT_START = "\u3010\u8BC6\u56FE\u7ED3\u679C\u3011";
export declare const VISION_ROUTE_RESULT_END = "\u3010\u8BC6\u56FE\u7ED3\u675F\u3011";
export interface VisionRouteInput {
    prompt: string;
    modelId: string;
    callerAgent: string;
    opts?: AgentSendOpts;
    signal?: AbortSignal;
}
export interface VisionRouteResult {
    /** Prompt the parent harness should send (original + child analysis). */
    parentPrompt: string;
    ok: boolean;
    error?: string;
}
export interface VisionRouteDeps {
    resolveSpawn?: typeof resolveSubagentSpawn;
    callAgent?: typeof callAgentByName;
}
export declare function isVisionRouteEnabled(): boolean;
/** Dedicated vision SKUs still receive image bytes; everyone else routes. */
export declare function isDedicatedVisionModel(modelId: string | undefined | null): boolean;
export declare function shouldRouteVision(modelId: string, prompt: string): boolean;
export declare function applyVisionResultToPrompt(prompt: string, body: string): string;
export declare function stripImageContentBlocks<T>(messages: T[]): T[];
export declare function runVisionRoute(input: VisionRouteInput, deps?: VisionRouteDeps): Promise<VisionRouteResult>;
//# sourceMappingURL=vision-route.d.ts.map