chore(codebase): full cleanup pass

backend/Modules/Messaging/Handlers/AddMessage.cs

@@ -40,14 +40,14 @@ public class AddMessage(
         AddMessageRequest req,
         CancellationToken ct)
     {
-        var message = new Message
+        Message message = new()
         {
             Id = req.Id ?? Guid.CreateVersion7(),
             SubjectId = req.SubjectId,
             CreatedBy = User.GetUserId(),
             Value = req.Message
-        }; 
-        
+        };
+
         await context.Messages.AddAsync(message, ct);
 
         await context.SaveChangesAsync(ct);