import type { StoragePlugin } from './types.js';
import type { VaultSync } from './vault.js';
import type { LLMService } from './llm-provider.js';
import type { ErrorLogger } from './error-logger.js';
export interface SynthesisOptions {
    vaultDir: string;
    /** default true */
    enabled?: boolean;
    /** debounce window in ms, default 2000 */
    debounceMs?: number;
    /** minimum observations before synthesis runs, default 3 */
    minObservations?: number;
}
export declare class SynthesisEngine {
    private storage;
    private vaultSync;
    private llmService;
    private vaultDir;
    private enabled;
    private debounceMs;
    private minObservations;
    private pending;
    private stopped;
    private errorLogger?;
    constructor(storage: StoragePlugin, vaultSync: VaultSync, llmService: LLMService | null, options: SynthesisOptions);
    setErrorLogger(logger: ErrorLogger): void;
    /** Schedule synthesis refresh for an entity (debounced). */
    scheduleEntity(name: string): void;
    /** Schedule synthesis refresh for a topic (debounced). */
    scheduleTopic(name: string): void;
    private _schedule;
    /** Flush all pending refreshes immediately. */
    flush(): Promise<void>;
    /** Force-refresh a specific entity synthesis page (bypasses debounce). */
    refreshEntity(name: string): Promise<void>;
    /** Force-refresh a specific topic synthesis page (bypasses debounce). */
    refreshTopic(name: string): Promise<void>;
    stop(): void;
    private _withinVault;
    private _getEntityObservations;
    private _getTopicObservations;
    private _getRelatedEntities;
}
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