/**
 * Verify Phone with Code by User Sub DTO
 *
 * Used for phone verification with 6-digit OTP code when allowing duplicate phones.
 * Requires user sub to identify which user's phone to verify.
 *
 * Security:
 * - UUID format validated (prevents injection)
 * - Code format validated (6 digits)
 *
 * @example
 * ```typescript
 * POST /auth/verify-phone/verify-by-sub
 * {
 *   "sub": "a21b654c-2746-4168-acee-c175083a65cd",
 *   "code": "123456"
 * }
 * ```
 */
export declare class VerifyPhoneWithCodeBySubDTO {
    /**
     * User's external identifier (sub/UUID v4)
     *
     * Validation:
     * - Must be a valid UUID v4 format
     * - Matches DB constraint: char(36) or uuid
     *
     * Sanitization:
     * - Trimmed and lowercased for consistency
     *
     * @example "a21b654c-2746-4168-acee-c175083a65cd"
     */
    sub: string;
    /**
     * 6-digit verification code
     *
     * Validation:
     * - Must be a numeric string
     * - Exactly 6 digits
     *
     * @example "123456"
     */
    code: string;
    /**
     * Challenge session ID (internal use)
     * Optional - used internally to link verification to specific challenge session.
     * Provides security by ensuring codes are only valid for the session they were created for.
     *
     * Validation:
     * - Must be a positive integer if provided
     * - Optional (for backward compatibility and direct verification flows)
     */
    challengeSessionId?: number;
}
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