fix permission poups and add settings to see permission state

app/src/main/java/sh/sar/isodroid/root/RootManager.kt

@@ -15,12 +15,36 @@ object RootManager {
         )
     }
 
-    suspend fun hasRoot(): Boolean = withContext(Dispatchers.IO) {
-        Shell.isAppGrantedRoot() == true
+    /**
+     * Check if root was previously granted (cached status, no popup).
+     * Returns true if granted, false if denied, null if unknown.
+     */
+    fun isRootGrantedCached(): Boolean? {
+        return Shell.isAppGrantedRoot()
     }
 
+    /**
+     * Check if root is available. Will trigger Magisk popup if not previously decided.
+     */
+    suspend fun hasRoot(): Boolean = withContext(Dispatchers.IO) {
+        try {
+            // getShell() initializes the shell and checks root status with Magisk
+            // If already granted, Magisk will auto-approve silently
+            Shell.getShell().isRoot
+        } catch (e: Exception) {
+            false
+        }
+    }
+
+    /**
+     * Request root access. Will trigger Magisk popup.
+     */
     suspend fun requestRoot(): Boolean = withContext(Dispatchers.IO) {
-        Shell.getShell().isRoot
+        try {
+            Shell.getShell().isRoot
+        } catch (e: Exception) {
+            false
+        }
     }
 
     suspend fun executeCommand(command: String): CommandResult = withContext(Dispatchers.IO) {