/**
 * Nudge Variant Support
 *
 * Reads GITMEM_NUDGE_VARIANT env var to select alternative header
 * framings for recall/prepare-context output. Used by nudge-bench
 * to A/B test how different wording affects agent compliance.
 *
 * When no env var is set, returns the production default.
 *
 * Variant IDs match nudge-bench/variants/n001-header.ts
 */
export interface NudgeHeader {
    icon: string;
    text: (count: number) => string;
}
/**
 * Get the active nudge header based on GITMEM_NUDGE_VARIANT env var.
 * Falls back to production default if unset or invalid.
 */
export declare function getNudgeHeader(): NudgeHeader;
/**
 * Format the recall header line using the active nudge variant.
 */
export declare function formatNudgeHeader(scarCount: number): string;
/**
 * Get the active variant ID (for logging/metrics).
 */
export declare function getActiveVariantId(): string;
//# sourceMappingURL=nudge-variants.d.ts.map