Fix compilation errors from merge/rebase: missing Row import, duplicate vars, private PREFS_NAME access

Author: Android-PowerUser

app/src/main/kotlin/com/google/ai/sample/MainActivity.kt

@@ -47,6 +47,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.Row
 import androidx.compose.material3.Button
 import androidx.compose.material3.Card
 import androidx.compose.material3.CircularProgressIndicator

app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningScreen.kt

@@ -180,8 +180,6 @@ internal fun PhotoReasoningRoute(
     val coroutineScope = rememberCoroutineScope()
     val imageRequestBuilder = ImageRequest.Builder(LocalContext.current)
     val imageLoader = ImageLoader.Builder(LocalContext.current).build()
-    val context = LocalContext.current
-    val mainActivity = context as? MainActivity
 
     val isAccessibilityServiceEffectivelyEnabled by mainActivity?.isAccessibilityServiceEnabledFlow?.collectAsState() ?: mutableStateOf(false)
     val isMediaProjectionPermissionGranted by mainActivity?.isMediaProjectionPermissionGrantedFlow?.collectAsState() ?: mutableStateOf(false)

app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningViewModel.kt

@@ -1389,7 +1389,7 @@ class PhotoReasoningViewModel(
 
     private fun postTaskToHumanExpert(text: String) {
          val context = getApplication<Application>().applicationContext
-         val prefs = context.getSharedPreferences(com.google.ai.sample.MainActivity.PREFS_NAME, Context.MODE_PRIVATE)
+         val prefs = context.getSharedPreferences("AppPrefs", Context.MODE_PRIVATE)
          val supportId = prefs.getString("payment_support_id", null)
 
          signalingClient?.postTask(text, hasScreenshot = false, supportId = supportId) // Capture live stream instead