feat:E-Sign 전자계약 i18n 메시지 키 추가
- message.esign: 12개 (created, cancelled, sent, reminded, fields_configured, otp_sent, otp_verified, signed, rejected, completed, verified, downloaded)
- error.esign: 16개 (invalid_token, token_expired, contract_not_signable, already_completed, already_cancelled, already_signed, invalid_status_for_send, no_sign_fields, cannot_remind, fields_only_in_draft, not_verified, otp_max_attempts, otp_not_sent, otp_expired, otp_invalid, file_not_found)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
fa6d2082c8