Thanks to https://steamhost.cn/steamcommunity_com/workshop/filedetails/discussion/3290232938/4522260786595424814/

ContextMenu_KO = {
ContextMenu_SmarterStorage_Edit = "수정",
ContextMenu_SmarterStorage_Presets = "프리셋",
ContextMenu_SmarterStorage_Reset = "초기화",
}

IGUI_KO = {
IGUI_SmarterStorage_Name = "이름",
IGUI_SmarterStorage_Color = "색깔",
IGUI_SmarterStorage_Icon = "아이콘",

IGUI_SmarterStorage_Cancel = "취소",
IGUI_SmarterStorage_OK = "확인",

IGUI_SmarterStorage_Weapons = "무기",
IGUI_SmarterStorage_Ammo = "탄약",
IGUI_SmarterStorage_Medical = "의약품",
IGUI_SmarterStorage_Clothing = "의류",
IGUI_SmarterStorage_Electronics = "전자제품",
IGUI_SmarterStorage_Food = "음식",
IGUI_SmarterStorage_Literature = "서적",
IGUI_SmarterStorage_Tools = "도구",
IGUI_SmarterStorage_Media = "미디어",
IGUI_SmarterStorage_Equipment = "장비",
IGUI_SmarterStorage_Gardening = "원예",
IGUI_SmarterStorage_Vehicles = "차량",
}


This is two text files from that discussion into Korean. Korean text files must be encoded in UTF-16 BE BOM (or UCS-2 BE) for it to work correctly. Additionally, as the author of that discussion suggested, the Lua code should use 'gettext()' for Korean translation.