feat: Implement user info request and update handling in MessageRepository and ProtocolManager

app/src/main/java/com/rosetta/messenger/network/ProtocolManager.kt

@@ -164,6 +164,25 @@ object ProtocolManager {
                 _typingUsers.value = _typingUsers.value - typingPacket.fromPublicKey
             }
         }
+        
+        // 🔥 Обработчик поиска (0x03) - обновляет информацию о пользователях в диалогах
+        waitPacket(0x03) { packet ->
+            val searchPacket = packet as PacketSearch
+            if (searchPacket.users.isNotEmpty()) {
+                addLog("📋 Search response: ${searchPacket.users.size} users")
+                scope.launch {
+                    searchPacket.users.forEach { user ->
+                        addLog("   Updating user info: ${user.publicKey.take(16)}... title=${user.title}, username=${user.username}")
+                        messageRepository?.updateDialogUserInfo(
+                            user.publicKey,
+                            user.title,
+                            user.username,
+                            user.verified
+                        )
+                    }
+                }
+            }
+        }
     }
     
     /**