import type { SettingsEntity, SettingsProvider } from '../types.js';
/**
 * 默认 SettingsProvider 实现 — JSON 文件存储
 *
 * @param _dataDir - 数据目录（保留用于未来扩展，当前由 JsonStore 通过 getProjectDataPath 管理）
 * @param defaultOverrides - 应用层覆盖默认设置（如 theme、language 等）
 */
export declare class DefaultSettingsProvider implements SettingsProvider {
    private store;
    private defaults;
    constructor(_dataDir?: string, defaultOverrides?: Partial<SettingsEntity>);
    getSettings(): SettingsEntity;
    updateSettings(updates: Partial<SettingsEntity>): SettingsEntity;
    resetSettings(): SettingsEntity;
    private tryRecoverSettings;
    private migrateApiKeysToProviders;
}
export declare function getSettings(dataDir?: string): SettingsEntity;
export declare function updateSettings(updates: Partial<SettingsEntity>): SettingsEntity;
export declare function resetSettings(): SettingsEntity;
export declare function getSettingsProvider(dataDir?: string, defaultOverrides?: Partial<SettingsEntity>): DefaultSettingsProvider;
//# sourceMappingURL=settings.service.d.ts.map