export declare const PLAN_SCOPES: readonly ['pro', 'premium'];
export declare const PLAN_VERSIONS: readonly ['2022', 'initial', 'Q3-2024', 'Q1-2026'];
export type PlanScope = typeof PLAN_SCOPES[number];
export type PlanVersion = typeof PLAN_VERSIONS[number];
/**
 * Checks if a plan version is older than or equal to the given threshold
 * using the ordering defined in PLAN_VERSIONS.
 * This can be reused for future major version gates
 * (e.g. v10 could set its own max plan version).
 */
export declare function isPlanVersionOlderOrEqual(planVersion: string, maxVersion: PlanVersion): boolean;