* chore: eliminate all Kotlin compiler warnings in main source
* test(chat): fix cross-class coroutine leaks poisoning the unit suite
- ChatUpdateCommandTest: inject FakeSlashUsageStore — the real DataStore
store inits on real IO threads with a relaxed-mock app (cacheDir NPE)
and leaks an uncaught exception into the next runTest class.
- ChatUpdateCommandTest + SlashCommandDispatchRpcTest: mock
ProfileSwitchCoordinator.switched (ChatViewModelTest pattern) — VMs
otherwise park collectors on the singleton flow that crash later
classes (ProfileSwitchCoordinatorTest) on stale-Main resumption.
Full suite: 944 tests, 0 failures (was 2 flaky per run).
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Co-authored-by: M57 <hy4ri@users.noreply.github.com>
Add a Language selector to Settings → Appearance that overrides the app
display language independent of the device locale. Persists a BCP-47 code
in ServerStoreState.appLanguage; MainActivity.attachBaseContext applies it
via a ContextWrapper (works on minSdk 26, no AppCompat dependency needed
since the Activity is a plain ComponentActivity). Selecting a language
recreates the activity so resources re-resolve immediately.
Includes System default / English / 한국어 options, plus a unit test for
the locale-code resolver.
Note: the new string keys (settings_item_language, language_system,
language_english, language_korean) should be backfilled into values-ko
once PR #602 lands.
Co-authored-by: hy4ri <hy4ri@users.noreply.github.com>
M57