import type { NiuBotConfig } from "../config.js";
export declare const PREFLIGHT_DATABASE_MANIFEST_ENV = "NIUBOT_PREFLIGHT_DATABASE_MANIFEST";
export declare const PREFLIGHT_FULL_VALIDATION_ENV = "NIUBOT_PREFLIGHT_FULL_VALIDATION";
export declare function shouldRunFullPreflight(env?: NodeJS.ProcessEnv): boolean;
export interface SnapshotRecord {
    databasePath: string;
    existed: boolean;
    rollbackPath?: string;
    mode?: number;
}
export interface RestartDatabaseSnapshot {
    rootDirectory: string;
    manifestPath: string;
    records: SnapshotRecord[];
}
export declare function assertDatabasesAtCompatibleSchemaVersion(databasePaths: string[], compatibleVersions: readonly number[], candidateSchemaVersion: number): void;
export declare function createRestartDatabaseSnapshot(options: {
    rootDirectory: string;
    databasePaths: string[];
    backupTimeoutMs?: number;
}): Promise<RestartDatabaseSnapshot>;
export declare function applyPreflightDatabaseManifest(config: NiuBotConfig, manifestPath: string): NiuBotConfig;
export declare function restoreRestartDatabaseSnapshot(snapshot: RestartDatabaseSnapshot): void;
export declare function cleanupRestartDatabaseSnapshot(snapshot: RestartDatabaseSnapshot): void;