feat: Implement avatar handling and display across chat and account screens

app/src/main/java/com/rosetta/messenger/ui/components/AvatarImage.kt

@@ -62,9 +62,15 @@ fun AvatarImage(
     // Состояние для bitmap
     var bitmap by remember(avatars) { mutableStateOf<Bitmap?>(null) }
     
+    // Логируем для отладки
+    LaunchedEffect(publicKey, avatars) {
+        android.util.Log.d("AvatarImage", "📸 publicKey=${publicKey.take(16)}... avatars=${avatars.size} repository=${avatarRepository != null}")
+    }
+    
     // Декодируем первый аватар
     LaunchedEffect(avatars) {
         bitmap = if (avatars.isNotEmpty()) {
+            android.util.Log.d("AvatarImage", "🔄 Decoding avatar for ${publicKey.take(16)}...")
             withContext(Dispatchers.IO) {
                 AvatarFileManager.base64ToBitmap(avatars.first().base64Data)
             }