import type { ɵAnswerAnnotations, ɵToolStepSource } from '@hashbrownai/core';
/** Owned annotation fold state. @internal */
export interface BedrockAnnotationState {
    readonly responseId: string;
    readonly toolSources: readonly ɵToolStepSource[];
    readonly citations: readonly unknown[];
}
/** Fresh state plus an independently owned answer annotation snapshot. @internal */
export interface BedrockAnnotationFold {
    readonly state: BedrockAnnotationState;
    readonly annotations: ɵAnswerAnnotations;
}
/** Starts an answer citation fold with a stable response-scoped identity. @internal */
export declare function createBedrockAnnotationState(responseId: string): BedrockAnnotationState;
/** Registers proven native tool sources and remaps all existing exact-URL citations. @internal */
export declare function addBedrockToolSources(state: BedrockAnnotationState, sources: readonly ɵToolStepSource[]): BedrockAnnotationFold;
/** Retains citation occurrences and emits quote-only references with independently owned metadata. @internal */
export declare function foldBedrockCitation(state: BedrockAnnotationState, delta: unknown): BedrockAnnotationFold;