(android) feat : English / Korean localization

[kkgg0522]

Changes

App settings show one Language row with the current choice. Tapping it opens a single-selection dialog; selecting a language applies it immediately.

System default, English (Eng), and Korean are available. Android's

LocaleManager

persists the choice and shares it with system app-language settings.

Navigation state survives activity recreation so changing language keeps the user on the settings screen.

Korean terminology was reviewed against the controls: noise control, the Off option, conversational-awareness volume, swipe intervals, and reconnection.

User-facing errors, troubleshooting steps, permission explanations, confirmation dialogs, equalizer labels, gesture results, and the existing privacy text use string resources. Diagnostics after the localized “Details” label, exception text supplied by Android, filenames, and exported logs retain their original text.

Log counts use plural resources. Display dates follow the active locale; machine-readable log filenames retain their fixed format.

Notification channel names and active service/battery notifications refresh when the app locale changes. The disabled connection-error notification stays disabled.

Automated checks

From

android

, run:

.\tools\check-localization.ps1 .\gradlew.bat :app:assembleFossDebug --console=plain

​

The resource check validates every translatable English string/plural against Korean, including duplicate keys, missing/empty translations and format arguments. The APK build compiles resources and Kotlin and packages native libraries.

Device checks before merging

These require a device or emulator and are not implied by a successful build.

Scenario	Expected result
Language row in both themes, without premium or connected AirPods	One accessible row showing the current choice
Open picker; tap current language, cancel, outside, or Back	Dismiss without changing the locale
Select Korean, then English	UI changes immediately; settings screen remains open
Restart app; change language from Android app settings	Selected language remains consistent with system settings
Choose System default, then change system language	App follows the system locale
Large font and TalkBack	Language rows remain readable and announce selected radio state
Save/read/delete log failure	Localized explanation; diagnostic details remain intact
Zero, one, multiple logs	Correct count and plural wording in each language
Switch language while background service runs	Notification labels refresh; connection stays intact
Denied call permission / connection timeout	Appropriate localized error; no false success message

The repository's SDK/NDK compatibility changes predate this localization work; keep them out of an upstream localization-only PR if the target branch does not already contain them. No PR is published by these local checks.