export type SessionProviderMigrationResult = {
    scanned: number;
    rewritten: number;
    skipped: number;
    retimed: number;
    fastSkipped: boolean;
};
export type StateDbProviderMigrationResult = {
    found: number;
    updated: number;
    failed: string[];
    warning?: string;
};
export declare function migrateSessionProviders(params: {
    codexHome: string;
    migrationStateFile: string;
    neutralizeSources: Set<string>;
}): Promise<SessionProviderMigrationResult>;
export declare function migrateStateDbProviders(params: {
    codexHome: string;
    targetProvider: string;
    sourceProviders: string[];
}): Promise<StateDbProviderMigrationResult>;