1e6e248891
* 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). --------- Co-authored-by: M57 <hy4ri@users.noreply.github.com>