/**
 * Credential masking utilities.
 *
 * Provides safe display of API keys and tokens in logs, status output,
 * and error messages. Inspired by NemoClaw's maskApiKey() pattern.
 *
 * @module
 */
/**
 * Mask a credential key for safe display.
 * Shows only the last 4 characters; preserves known prefixes for readability.
 */
export declare function maskKey(key: string): string;
/**
 * Redact all known credential patterns in a free-form string.
 * Reuses CREDENTIAL_PATTERNS from leak-detector for consistency.
 */
export declare function redactCredentials(text: string): string;
