import type { ManagedApiKeyBindResponse } from '../../lib/api.js';
/**
 * Calculate when to next refresh the key based on rotation metadata.
 *
 * Priority order:
 * 1. nextRotationAt from bind response or config
 * 2. graceExpiresAt (refresh at 50% of remaining grace)
 * 3. Fallback interval (5 minutes)
 */
export declare function calculateNextRefreshMs(bindResponse: ManagedApiKeyBindResponse | null): number;
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