import type { ContextCompactionItem } from "./types.js";
import { type OpenGeniText } from "../messages/runtime.js";
/** Headline for a compaction that could not produce a checkpoint. */
export declare const COMPACTION_FAILURE_TITLE: (t: OpenGeniText) => string;
/**
 * Headline for a compaction cut short by its own attempt's cancellation (for
 * example a worker restarting during a deploy). Not a failure: the recovered
 * attempt checks again and compacts if the history still needs it.
 */
export declare const COMPACTION_INTERRUPTED_TITLE: (t: OpenGeniText) => string;
/** Headline for a settled `skipped` compaction landmark. */
export declare function compactionSkipTitle(t: OpenGeniText, reason: string | null): string;
/** Why a definitive provider rejection repeats; shown behind Details. */
export declare const COMPACTION_REJECTION_NOTE: (t: OpenGeniText) => string;
/**
 * Subtitle for a settled compaction landmark. Kept short: a definitive provider
 * rejection withholds the generic retry promise, names the one recovery step,
 * and moves its identifiers behind Details ({@link compactionFailureDetails}).
 */
export declare function compactionSkipSubtitle(t: OpenGeniText, reason: string | null, providerRejection?: ContextCompactionItem["providerRejection"]): string;
export type CompactionFailureDetails = {
    /** One plain sentence on why it failed, when known. */
    note: string | null;
    /** Provider identifiers or the recorded error text, in display order. */
    facts: Array<{
        label: string;
        value: string;
    }>;
};
/**
 * Technical diagnostics for a failed compaction landmark, or null when it has
 * none: a definitive provider rejection lists its content-free identifiers;
 * any other failure shows the turn's recorded error text. Presentation only.
 */
export declare function compactionFailureDetails(t: OpenGeniText, item: Pick<ContextCompactionItem, "phase" | "skipReason" | "providerRejection" | "failureDetail">): CompactionFailureDetails | null;
/**
 * Short chip copy for a turn's failure reason. A compaction failure records the
 * raw provider text after a fixed prefix; the chip names the outcome instead
 * and keeps the recorded text as `detail` (a hover title). Every other reason
 * passes through unchanged.
 */
export declare function presentTurnFailureText(t: OpenGeniText, failureText: string | null | undefined): {
    summary: string;
    detail?: string;
} | null;
/** `HTTP 400 invalid_request_error, param input[3].encrypted_content`; identifiers only. */
export declare function describeCompactionProviderRejection(rejection: NonNullable<ContextCompactionItem["providerRejection"]>): string;