import type { Database } from '../runtime/sqlite';
import type { Logger } from '../types';
export interface KvEntry {
    key: string;
    data: unknown;
    updatedAt: number;
    expiresAt: number;
}
export interface KvService {
    get<T = unknown>(projectId: string, key: string): T | null;
    set<T = unknown>(projectId: string, key: string, data: T): void;
    delete(projectId: string, key: string): void;
    list(projectId: string): KvEntry[];
    listByPrefix(projectId: string, prefix: string): KvEntry[];
}
export declare function createKvService(db: Database, _logger?: Logger, defaultTtlMs?: number): KvService;
/**
 * Degraded-mode KvService backed by an in-process Map. Used when
 * `initializeDatabase` fails (corruption, EACCES, read-only FS, etc.) so
 * plugin init can still complete and agents (forge/muse/sage) are registered.
 *
 * Contract is identical to `createKvService`. Data is NOT persisted across
 * process restarts. TTL semantics match the DB-backed implementation
 * (lazy expiry on read).
 */
export declare function createInMemoryKvService(logger?: Logger, defaultTtlMs?: number): KvService;
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