import type { AgentMessage } from '@earendil-works/pi-agent-core';
import type { Config } from '../../config/schema.js';
export interface VoiceMemorySnapshot {
    block: string;
    references: Array<{
        kind: 'assertion' | 'knowledge';
        id: string;
        updatedAt: number;
    }>;
    isCurrent: () => boolean;
    subscribe: (invalidate: () => void) => () => void;
}
export declare function voiceMemoryEnabled(config: Config, sessionKey: string): boolean;
export declare function voiceMemoryQuery(history: AgentMessage[]): string;
export declare function buildVoiceMemoryContext(input: {
    getConfig: () => Config;
    sessionKey: string;
    workspaceId: string;
    projectId?: string;
    history: AgentMessage[];
    maxChars: number;
}): VoiceMemorySnapshot | undefined;