[himomohi]

What

Adds Korean (ko) as a supported client UI locale on the current main branch.

• adds a complete Korean resource with parity against all 1,603 English UI keys
• adds 한국어 to the language selector and language-name matrix
• resolves ko, ko-KR, and other ko-* system locales to Korean
• registers the Korean bundle in the shared Expo client used by iOS, Android, web, and Electron
• adds locale, resource-parity, interpolation, and browser language-switch coverage
• updates the i18n documentation

Why

Korean is still absent from the current language options, so Korean system locales fall back to English. This refreshes the work from #1544 against the latest client translation surface.

The Korean translation from #1544 was used as the baseline and updated for the current 1,603-key resource. Original contributor @Kesta-bos is preserved as a co-author on the commit.

Verification

• npx vitest run packages/app/src/i18n/locales.test.ts packages/app/src/i18n/resources.test.ts packages/app/src/i18n/sync-language.test.ts packages/app/src/i18n/init.test.ts --bail=1
  • 4 files, 52 tests passed
• npm run typecheck
  • passed across all workspaces
• npm run lint
  • 0 warnings, 0 errors
• npm run format:check
  • passed
• npm run test:e2e --workspace=@getpaseo/app -- e2e/browser/settings-i18n.spec.ts
  • 2 browser tests passed, including English → Korean → English
• iOS Expo/Hermes export
  • passed; 25.9 MB iOS bundle generated
• Android Expo/Hermes export
  • passed; 25.9 MB Android bundle generated

Platform coverage

Platform	Evidence
Web	Playwright language-switch flow passed
iOS	Expo/Hermes bundle generated; simulator/device not available
Android	Expo/Hermes bundle generated; emulator/device not available
Electron	Shared client typecheck passed; desktop runtime not manually exercised

No protocol or daemon behavior changes are included.

[greptile-apps]

Greptile Summary

Adds Korean as a supported UI locale across the shared Expo client.

• Registers the complete Korean translation resource and adds Korean to language selectors.
• Resolves ko and regional ko-* system locales to Korean.
• Adds resource-parity, interpolation, locale-resolution, and browser language-switch coverage.
• Updates the i18n documentation.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
packages/app/src/i18n/resources/ko.ts	Adds the complete Korean translation resource with the same typed key surface as English.
packages/app/src/i18n/locales.ts	Registers Korean in locale types, selector metadata, language-name mappings, and system-locale resolution.
packages/app/src/i18n/i18next.ts	Registers the Korean resource bundle with the shared i18next client initialization.
packages/app/src/i18n/resources.test.ts	Extends translation parity and interpolation checks to the Korean resource.
packages/app/e2e/browser/settings-i18n.spec.ts	Covers switching from English to Korean and back through the browser settings UI.
docs/i18n.md	Documents Korean support, system-locale mapping, and the new localization batch.

_{Reviews (3): Last reviewed commit: "Merge remote-tracking branch 'origin/mai..." | Re-trigger Greptile}

[myung-nyun]

벌써 한국분께서 요청하셨군요!