Trigger managed mode scan when enabling per-app proxy

app/src/main/java/io/nekohasekai/sfa/compose/screen/settings/ProfileOverrideScreen.kt

@@ -208,6 +208,12 @@ fun ProfileOverrideScreen(navController: NavController) {
                     },
                     trailingContent = {
                         if (isPerAppProxyAvailable) {
+                            if (isScanning) {
+                                CircularProgressIndicator(
+                                    modifier = Modifier.size(24.dp),
+                                    strokeWidth = 2.dp,
+                                )
+                            } else {
                                 Switch(
                                     checked = perAppProxyEnabled,
                                     onCheckedChange = { checked ->
@@ -215,9 +221,20 @@ fun ProfileOverrideScreen(navController: NavController) {
                                         scope.launch(Dispatchers.IO) {
                                             Settings.perAppProxyEnabled = checked
                                         }
+                                        if (checked && managedModeEnabled) {
+                                            isScanning = true
+                                            scope.launch {
+                                                val chinaApps = scanAllChinaApps()
+                                                withContext(Dispatchers.IO) {
+                                                    Settings.perAppProxyManagedList = chinaApps
+                                                }
+                                                isScanning = false
+                                            }
+                                        }
                                     },
                                 )
                             }
+                        }
                     },
                     modifier =
                         Modifier.clip(