import type { ArkmeTimelinePage } from './types.js';
import type { ChatSyncCommand } from './chat-message-sync.js';
export declare const TIMELINE_CACHE_FILE = "chat-timeline-v2.sqlite3";
export declare const MAX_CACHED_WINDOWS = 256;
export declare const MAX_TIMELINE_WINDOW_EVENTS = 2000;
export declare const MAX_TIMELINE_WINDOW_BYTES: number;
export interface TimelineCacheCommit {
    ticket?: number;
    latest?: boolean;
    refreshTokens?: string[];
}
/** Single-writer store. In production every call runs on the dedicated storage worker. */
export declare class UnifiedTimelineCache {
    private readonly db;
    private readonly statements;
    private readonly messageSync;
    constructor(directory: string);
    private prepare;
    reserve(): number;
    sync(command: ChatSyncCommand): unknown;
    private syncBytes;
    private enforceSyncBudget;
    read(scope: string, request: string, anchorId?: string, latest?: boolean): ArkmeTimelinePage | undefined;
    write(scope: string, request: string, page: ArkmeTimelinePage, options?: TimelineCacheCommit): boolean;
    /** Lost revocations discard projections, keeping sync identities for bounded recovery. */
    invalidateAll(): void;
    invalidateSource(sourceKey: string, timelineItemKey?: string, terminal?: boolean, refreshOnly?: boolean): void;
    invalidate(scope: string, timelineItemKey?: string, terminal?: boolean, refreshOnly?: boolean): void;
    private collect;
    private trimPhysicalPages;
    private remove;
    close(): void;
}
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