[Fix] system theme initial, toggle theme first time

composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt

@@ -10,8 +10,9 @@ import org.koin.compose.viewmodel.koinViewModel
 
 @Composable
 @Preview
-fun App() {
-    val viewModel = koinViewModel<AppViewModel>()
+fun App(
+    viewModel: AppViewModel = koinViewModel()
+) {
     val savedTheme = viewModel.isDarkTheme.value
     val isDarkTheme = savedTheme ?: isSystemInDarkTheme()
     val isLoggedIn = viewModel.isLoggedIn()

composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/MainScreen.kt

@@ -12,6 +12,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
@@ -62,6 +63,7 @@ fun MainScreen(
     val navBackStackEntry by navController.currentBackStackEntryAsState()
     val currentDestination = navBackStackEntry?.destination
     val noNavbar = listOf(AuthDestination.route, CommunicationDestination.route)
+    val startRoute = rememberSaveable { if (isLoggedIn) HomeDestination.route else AuthDestination.route }
 
     val sessionExpired by viewModel.sessionExpired
 
@@ -122,7 +124,7 @@ fun MainScreen(
     ) { innerPadding ->
         NavHost(
             navController = navController,
-            startDestination = if (isLoggedIn) HomeDestination.route else AuthDestination.route,
+            startDestination = startRoute,
             modifier = Modifier.padding(innerPadding).fillMaxSize()
         ) {
             composable(AuthDestination.route) { LoginScreen(navController) }