import type { ChatImage, ChatMessage, Mode } from "../../../types.js";
import type { SessionPlan } from "../../../store/plan.js";
import type { AgentPromptSection } from "../../prompt-composer.js";
export interface TurnMessagesInput {
    readonly prompt: string;
    readonly displayPrompt: string | null | undefined;
    readonly images: ChatImage[] | undefined;
    readonly history: ChatMessage[] | undefined;
    readonly mode: Mode;
    readonly systemSections: readonly string[];
    readonly selectedSkillNames: readonly string[];
    readonly nativeToolsActive: boolean;
    readonly inputTokenBudget: number | undefined;
    readonly stableSystemContent: (native: boolean) => string;
    readonly instructionsBlock: string | undefined;
    readonly skillsBlock: string | undefined;
    readonly plan: SessionPlan | undefined;
    readonly planApproved: boolean;
}
export interface TurnMessages {
    readonly messages: ChatMessage[];
    readonly requestContextMessage: string;
    readonly promptSections: () => AgentPromptSection[];
}
export declare const dropSectionsAlreadyInHistory: (sections: readonly AgentPromptSection[], history: readonly ChatMessage[] | undefined, prompt: string) => AgentPromptSection[];
export declare const composeTurnMessages: (input: TurnMessagesInput) => TurnMessages;