- Add data-i18n attributes to JSON, Import tooltip, and Clear button - Reuse existing 'clear' and 'import' i18n keys for button labels - Add 'export_session_json', 'export_session_json_tooltip', 'import_session_json_tooltip', 'clear_conversation_btn_tooltip' keys to all 11 locales (en, it, ja, ru, es, de, zh, zh-Hant, pt, ko, fr)