/**
 * RouteCodex-X7E Feature Gate
 *
 * Provides runtime toggles for the x7e refactoring phases to enable safe rollout and rollback.
 * All gates default to ENABLED (true) for new code paths, with ability to disable via environment.
 */
/**
 * Gate export for use in handlers/bridge layer.
 * All phases use consistent interface for runtime toggling.
 */
export declare const x7eGate: {
    readonly phase0Enabled: boolean;
    readonly phase1UnifiedQuota: boolean;
    readonly phase2UnifiedControl: boolean;
    readonly phase3ExecutorSeparation: boolean;
    readonly phase4UnifiedLogging: boolean;
    readonly isLegacyMode: () => boolean;
};
/**
 * Gate state metadata for observability/debugging.
 */
export declare function getGateState(): Record<string, boolean | string>;