refactor: restore ToastQueue provider for testability

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: ovitrif

app/src/main/java/to/bitkit/di/ViewModelModule.kt

@@ -5,14 +5,17 @@ import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
 import dagger.hilt.components.SingletonComponent
+import kotlinx.coroutines.CoroutineScope
+import to.bitkit.ui.shared.toast.ToastQueue
 import javax.inject.Singleton
 
 @Module
 @InstallIn(SingletonComponent::class)
 object ViewModelModule {
     @Singleton
     @Provides
-    fun provideFirebaseMessaging(): FirebaseMessaging {
-        return FirebaseMessaging.getInstance()
-    }
+    fun provideFirebaseMessaging(): FirebaseMessaging = FirebaseMessaging.getInstance()
+
+    @Provides
+    fun provideToastQueueProvider(): (CoroutineScope) -> ToastQueue = { ToastQueue(it) }
 }

app/src/main/java/to/bitkit/viewmodels/AppViewModel.kt

@@ -127,6 +127,7 @@ class AppViewModel @Inject constructor(
     connectivityRepo: ConnectivityRepo,
     healthRepo: HealthRepo,
     timedSheetManagerProvider: @JvmSuppressWildcards (CoroutineScope) -> TimedSheetManager,
+    toastQueueProvider: @JvmSuppressWildcards (CoroutineScope) -> ToastQueue,
     private val toaster: Toaster,
     @ApplicationContext private val context: Context,
     @BgDispatcher private val bgDispatcher: CoroutineDispatcher,
@@ -1780,7 +1781,7 @@ class AppViewModel @Inject constructor(
     // endregion
 
     // region Toasts
-    private val toastQueue = ToastQueue(viewModelScope)
+    private val toastQueue = toastQueueProvider(viewModelScope)
     val currentToast: StateFlow<Toast?> = toastQueue.currentToast
 
     fun hideToast() = toastQueue.dismissCurrentToast()