/**
 * [WHO]: inferCopilotInitiator, hasCopilotVisionInput, buildCopilotDynamicHeaders
 * [FROM]: No external dependencies
 * [TO]: Consumed by core/lib/ai/src/index.ts
 * [HERE]: core/lib/ai/src/providers/github-copilot-headers.ts -
 */
import type { Message } from "../types.js";
export declare function inferCopilotInitiator(messages: Message[]): "user" | "agent";
export declare function hasCopilotVisionInput(messages: Message[]): boolean;
export declare function buildCopilotDynamicHeaders(params: {
    messages: Message[];
    hasImages: boolean;
}): Record<string, string>;