/**
 * [WHO]: PresenceMemoryEngine type, getMemoryDir(), getProject(), detectLanguageFromMemory(), collectMemoryHighlights(), collectIdentityPreferenceHighlights()
 * [FROM]: Depends on node:os, node:path, node:fs for memory path discovery
 * [TO]: Consumed by extensions/builtin/presence/index.ts and presence tests
 * [HERE]: extensions/builtin/presence/presence-memory.ts - memory-derived locale and highlight selection for presence prompts
 */
type PresenceMemoryEntry = {
    type?: string;
    tags: string[];
    name?: string;
    summary?: string;
    detail?: string;
    content?: string;
    importance?: number;
};
export type PresenceMemoryEngine = {
    getAllEntries(): Promise<{
        knowledge: PresenceMemoryEntry[];
        lessons: PresenceMemoryEntry[];
        events?: PresenceMemoryEntry[];
        preferences?: PresenceMemoryEntry[];
        facets?: PresenceMemoryEntry[];
    }>;
    getAllEpisodes(): Promise<Array<{
        date?: string;
        consolidated?: boolean;
        endedAt?: string;
        startedAt?: string;
        summary?: string;
        userGoal?: string;
    }>>;
    searchEntries(query: string): Promise<PresenceMemoryEntry[]>;
};
export type PresenceMemoryState = {
    memEngine?: PresenceMemoryEngine;
    personaMemEngine?: PresenceMemoryEngine;
    recentlyReferencedMemories: string[];
};
export type MemoryHighlights = {
    preferences: string[];
    lessons: string[];
};
export declare function getMemoryDir(): string;
/**
 * Resolve the persona-specific memory directory, if one exists for the active persona.
 * Returns the path only when both NANO_PERSONA_DIR is set AND the persona has its own
 * `memory/` subdirectory containing at least one of the canonical nanomem files.
 * Returns undefined when persona has no memory (graceful fallback to global memory).
 */
export declare function getPersonaMemoryDir(): string | undefined;
export declare function getProject(): string;
export declare function detectLanguageFromMemory(state: PresenceMemoryState): Promise<"en" | "zh" | undefined>;
export declare function collectMemoryHighlights(state: PresenceMemoryState): Promise<MemoryHighlights>;
export declare function collectIdentityPreferenceHighlights(state: PresenceMemoryState): Promise<string[]>;
export {};