import type { AgentMessage } from "@earendil-works/pi-agent-core";
import type { ClassifierAnswer, ClassifierContext, ClassifierResult, Usage } from "@earendil-works/pi-ai";
import type { ExtensionContext } from "@earendil-works/pi-coding-agent";
import type { FabricExtractiveConfig } from "../config.js";
import { type ExtractiveCandidate } from "./extractive-index.js";
export declare const EXTRACTIVE_CUSTOM_TYPE = "fabric-extractive-history";
export declare const EXTRACTIVE_RUBRIC_VERSION = "salience-v1";
/** Salience only: even probability 1 never validates a source's truth. */
export declare function extractiveSalience(answer: ClassifierAnswer): number | undefined;
export declare function validateExtractiveAnswers(result: ClassifierResult, ids: string[]): Map<string, number> | undefined;
export declare function extractiveClassifierContext(candidates: ExtractiveCandidate[]): ClassifierContext;
/** Session-owned, disposable derived state. No source files, global stores or connector. */
export declare class ExtractiveHistory {
    private readonly getConfig;
    private annotations;
    private sessionId;
    private prepared;
    private pending;
    private generation;
    private lastTurn;
    constructor(getConfig: () => FabricExtractiveConfig | undefined);
    invalidate(clearCache?: boolean): void;
    private annotationKey;
    prepare(context: ExtensionContext, query: string): Promise<void>;
    /** Request-local data only; never alter prompt options, system messages or tools. */
    inject(context: ExtensionContext, messages: AgentMessage[]): AgentMessage[];
    view(context: ExtensionContext): {
        text: string;
        usage?: Usage;
    } | undefined;
}
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