feat: Integrate AvatarRepository into chat components for improved avatar handling and caching

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

@@ -70,11 +70,14 @@ fun AvatarImage(
     // Декодируем первый аватар
     LaunchedEffect(avatars) {
         bitmap = if (avatars.isNotEmpty()) {
-            android.util.Log.d("AvatarImage", "🔄 Decoding avatar for ${publicKey.take(16)}...")
+            android.util.Log.d("AvatarImage", "🔄 Decoding avatar for ${publicKey.take(16)}... base64 length=${avatars.first().base64Data?.length ?: 0}")
             withContext(Dispatchers.IO) {
-                AvatarFileManager.base64ToBitmap(avatars.first().base64Data)
+                val result = AvatarFileManager.base64ToBitmap(avatars.first().base64Data)
+                android.util.Log.d("AvatarImage", "✅ Decoded bitmap for ${publicKey.take(16)}... result=${result != null} size=${result?.width}x${result?.height}")
+                result
             }
         } else {
+            android.util.Log.d("AvatarImage", "⚠️ No avatars for ${publicKey.take(16)}...")
             null
         }
     }
@@ -92,6 +95,11 @@ fun AvatarImage(
             ),
         contentAlignment = Alignment.Center
     ) {
+        // Log what we're showing
+        LaunchedEffect(bitmap) {
+            android.util.Log.d("AvatarImage", "🖼️ Showing for ${publicKey.take(16)}... bitmap=${bitmap != null}")
+        }
+        
         if (bitmap != null) {
             // Отображаем реальный аватар
             Image(