del front and add auth

src/main/java/com/krylov/refound/service/MessageService.java

@@ -58,8 +58,8 @@ public class MessageService {
           : m.getSender().getId();
 
       String email = isMeSender
-          ? m.getReceiver().getEmail()
-          : m.getSender().getEmail();
+          ? m.getReceiver().getLogin()
+          : m.getSender().getLogin();
 
       int unread = messageRepository.countUnread(userId, otherUserId);
 

src/main/java/com/krylov/refound/service/UserService.java

@@ -15,7 +15,7 @@ public class UserService {
 
   public User getCurrentUser() {
 
-    return repository.findByEmail("moscow_city231@rambler.ru")
+    return repository.findByLogin("moscow_city231@rambler.ru")
         .orElseThrow(() -> new ApiException(
             ErrorCode.NOT_FOUND,
             "User not found",