- 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/City.cs

@@ -1,38 +1,56 @@
 namespace Domain.Entities;
 
-public class City
+public sealed class City
 {
+    // PK
     public Guid CityId { get; set; }
-    public string CityName { get; set; } = string.Empty;
+
+    // FK References
     public Guid StateProvinceId { get; set; }
 
-    public StateProvince? StateProvince { get; set; }
+    // Attributes
+    public string CityName { get; set; } = string.Empty;
 
-    public byte[]? Timer { get; set; }
+    // Audit Fields
+    public byte[]? RowVersion { get; set; }
+
+    // Navigation Properties
+    public StateProvince? StateProvince { get; set; }
 }
 
 
-public class StateProvince
+public sealed class StateProvince
 {
+    // PK
     public Guid StateProvinceId { get; set; }
+
+    // FK References
+    public Guid CountryId { get; set; }
+
+    // Attributes
     public string StateProvinceName { get; set; } = string.Empty;
 
     // this is the iso 3166-2 code for the state/province, e.g. "CA" for California, "ON" for Ontario, etc.
     // and is rendered like US-CA for California, CA-ON for Ontario, etc.
     public string ISO3166_2 { get; set; } = string.Empty;
-    public Guid CountryId { get; set; }
 
+    // Audit Fields
+    public byte[]? RowVersion { get; set; }
+
+    // Navigation Properties
     public Country? Country { get; set; }
-
-    public byte[]? Timer { get; set; }
 }
 
-public class Country
+public sealed class Country
 {
+    // PK
     public Guid CountryId { get; set; }
+
+    // Attributes
     public string CountryName { get; set; } = string.Empty;
 
     public string ISO3166_1 { get; set; } = string.Empty; // this is the iso 3166-1 alpha-2 code for the country, e.g. "US" for United States, "CA" for Canada, etc.
 
-    public byte[]? Timer { get; set; }
+    // Audit Fields
+    public byte[]? RowVersion { get; set; }
 }