- Updated column names from 'Timer' to 'RowVersion' in schema.sql for

- Introduced new BeerPost entity and updated BreweryPost and BreweryPostLocation entities to use 'RowVersion' for concurrency.
- Modified UserAccount, UserCredential, UserVerification, City, StateProvince, and Country entities to use 'RowVersion' instead of 'Timer'.
- Updated tests and command handlers to reflect changes in concurrency token from 'Timer' to 'RowVersion'.
- Adjusted BreweryDto and BreweryDtoMapper to include 'RowVersion' and updated mapping logic accordingly.
- Ensured all repository methods and interfaces are aligned with the new concurrency handling approach.

web/backend/Domain/Domain.Entities/Entities/UserAccount.cs

@@ -1,14 +1,19 @@
 namespace Domain.Entities;
 
-public class UserAccount
+public sealed class UserAccount
 {
+    // PK
     public Guid UserAccountId { get; set; }
+
+    // Attributes
     public string Username { get; set; } = string.Empty;
     public string FirstName { get; set; } = string.Empty;
     public string LastName { get; set; } = string.Empty;
     public string Email { get; set; } = string.Empty;
+    public DateTime DateOfBirth { get; set; }
+
+    // Audit Fields
     public DateTime CreatedAt { get; set; }
     public DateTime? UpdatedAt { get; set; }
-    public DateTime DateOfBirth { get; set; }
-    public byte[]? Timer { get; set; }
+    public byte[]? RowVersion { get; set; }
 }