add setup wizard, remove stoage api permission since root is used for that

app/src/main/java/sh/sar/isodroid/viewmodel/MainViewModel.kt

@@ -45,11 +45,9 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         private val DEFAULT_ISO_DIRECTORY = "${Environment.getExternalStorageDirectory().absolutePath}/isodrive"
     }
 
-    init {
-        viewModelScope.launch {
-            initialize()
-        }
+    private var initialized = false
 
+    init {
         // Observe mount events from notification actions
         viewModelScope.launch {
             MountEventBus.events.collect { event ->
@@ -66,7 +64,15 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         }
     }
 
-    private suspend fun initialize() {
+    fun initialize() {
+        if (initialized) return
+        initialized = true
+        viewModelScope.launch {
+            doInitialize()
+        }
+    }
+
+    private suspend fun doInitialize() {
         _uiState.update { it.copy(isLoading = true) }
 
         // Load saved ISO directory
@@ -77,8 +83,8 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         _uiState.update { it.copy(isoDirectory = savedDirectory, currentPath = savedDirectory) }
         navigationStack.add(savedDirectory)
 
-        // Check root access
-        val hasRoot = RootManager.requestRoot()
+        // Check root access (don't request, just check - wizard handles requesting)
+        val hasRoot = RootManager.hasRoot()
         _uiState.update { it.copy(hasRoot = hasRoot) }
 
         if (hasRoot) {