Add Korean UI localization (#2895)

* Add Korean UI localization

Refreshes the Korean translation from #1544 against the current client locale surface and adds cross-platform locale detection coverage.\n\nCo-authored-by: JinHyeok Jeong <150323322+Kesta-bos@users.noreply.github.com>

* fix(i18n): preserve reviewed Korean status labels

Restore the wording corrections contributed in the original Korean localization work and lock them with exact-copy assertions.

Co-authored-by: JinHyeok Jeong <150323322+Kesta-bos@users.noreply.github.com>

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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
Co-authored-by: JinHyeok Jeong <150323322+Kesta-bos@users.noreply.github.com>

packages/app/src/i18n/i18next.ts

@@ -6,6 +6,7 @@ import { en } from "./resources/en";
 import { es } from "./resources/es";
 import { fr } from "./resources/fr";
 import { ja } from "./resources/ja";
+import { ko } from "./resources/ko";
 import { ptBR } from "./resources/pt-BR";
 import { ru } from "./resources/ru";
 import { zhCN } from "./resources/zh-CN";
@@ -23,6 +24,7 @@ observeI18nInit(
       es: { translation: es },
       fr: { translation: fr },
       ja: { translation: ja },
+      ko: { translation: ko },
       "pt-BR": { translation: ptBR },
       ru: { translation: ru },
       "zh-CN": { translation: zhCN },