Move dotnet api into new directory

web/backend/Domain/Domain.Entities/Domain.Entities.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+   <PropertyGroup>
+      <TargetFramework>net10.0</TargetFramework>
+      <ImplicitUsings>enable</ImplicitUsings>
+      <Nullable>enable</Nullable>
+      <RootNamespace>Domain</RootNamespace>
+   </PropertyGroup>
+</Project>

web/backend/Domain/Domain.Entities/Entities/BreweryPost.cs

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+namespace Domain.Entities;
+
+public class BreweryPost
+{
+    public Guid BreweryPostId { get; set; }
+    public Guid PostedById { get; set; }
+    public string BreweryName { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public byte[]? Timer { get; set; }
+    public BreweryPostLocation? Location { get; set; }
+}

web/backend/Domain/Domain.Entities/Entities/BreweryPostLocation.cs

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+namespace Domain.Entities;
+
+public class BreweryPostLocation
+{
+   public Guid BreweryPostLocationId { get; set; }
+   public Guid BreweryPostId { get; set; }
+   public string AddressLine1 { get; set; } = string.Empty;
+   public string? AddressLine2 { get; set; }
+   public string PostalCode { get; set; } = string.Empty;
+   public Guid CityId { get; set; }
+   public byte[]? Coordinates { get; set; }
+   public byte[]? Timer { get; set; }
+}

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

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+namespace Domain.Entities;
+
+public class UserAccount
+{
+   public Guid UserAccountId { get; set; }
+   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 CreatedAt { get; set; }
+   public DateTime? UpdatedAt { get; set; }
+   public DateTime DateOfBirth { get; set; }
+   public byte[]? Timer { get; set; }
+}

web/backend/Domain/Domain.Entities/Entities/UserCredential.cs

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+namespace Domain.Entities;
+
+public class UserCredential
+{
+   public Guid UserCredentialId { get; set; }
+   public Guid UserAccountId { get; set; }
+   public DateTime CreatedAt { get; set; }
+   public DateTime Expiry { get; set; }
+   public string Hash { get; set; } = string.Empty;
+   public byte[]? Timer { get; set; }
+}

web/backend/Domain/Domain.Entities/Entities/UserVerification.cs

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+namespace Domain.Entities;
+
+public class UserVerification
+{
+   public Guid UserVerificationId { get; set; }
+   public Guid UserAccountId { get; set; }
+   public DateTime VerificationDateTime { get; set; }
+   public byte[]? Timer { get; set; }
+}

web/backend/Domain/Domain.Exceptions/Domain.Exceptions.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net10.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>

web/backend/Domain/Domain.Exceptions/Exceptions.cs

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+namespace Domain.Exceptions;
+
+/// <summary>
+/// Exception thrown when a resource conflict occurs (e.g., duplicate username, email already in use).
+/// Maps to HTTP 409 Conflict.
+/// </summary>
+public class ConflictException(string message) : Exception(message);
+
+/// <summary>
+/// Exception thrown when a requested resource is not found.
+/// Maps to HTTP 404 Not Found.
+/// </summary>
+public class NotFoundException(string message) : Exception(message);
+
+// Domain.Exceptions/UnauthorizedException.cs
+
+/// <summary>
+/// Exception thrown when authentication fails or is required.
+/// Maps to HTTP 401 Unauthorized.
+/// </summary>
+public class UnauthorizedException(string message) : Exception(message);
+
+/// <summary>
+/// Exception thrown when a user is authenticated but lacks permission to access a resource.
+/// Maps to HTTP 403 Forbidden.
+/// </summary>
+public class ForbiddenException(string message) : Exception(message);
+
+/// <summary>
+/// Exception thrown when business rule validation fails (distinct from FluentValidation).
+/// Maps to HTTP 400 Bad Request.
+/// </summary>
+public class ValidationException(string message) : Exception(message);