import type { ObservationIndex, ObservationType } from "../types";
import type { ProgressiveContext } from "./progressive";
/** Configuration for how context strings are built and formatted. */
export interface ContextBuilderConfig {
    showTokenCosts: boolean;
    observationTypes: ObservationType[] | "all";
    fullObservationCount: number;
    showLastSummary: boolean;
}
/** Build a Markdown context string for system prompt injection. */
export declare function buildContextString(context: ProgressiveContext, config?: ContextBuilderConfig): string;
/** Build a plain-text context string for session compaction. */
export declare function buildCompactContext(context: ProgressiveContext): string;
/**
 * Build a Markdown section for user-level (cross-project) observations.
 * Fits entries within the given token budget using progressive disclosure.
 */
export declare function buildUserContextSection(userIndex: ObservationIndex[], maxTokens: number): string;
/**
 * Build a plain-text section for user-level context (used in compaction).
 */
export declare function buildUserCompactContext(userIndex: ObservationIndex[], maxTokens: number): string;
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