Add Svrnty.CQRS.Events.Kafka package

Kafka domain event publisher implementing IDomainEventPublisher,
sibling to Svrnty.CQRS.Events.RabbitMQ. Uses Confluent.Kafka 2.6.1,
targets net10.0 with C# 14.

Features:
- Configurable bootstrap servers, client id, idempotence, acks, retries
- Security protocol + SASL config (Plaintext/SSL/SASL_SSL etc.)
- Topic mapper (default lowercase event-type-name, custom func override)
- IAsyncDisposable producer cleanup
- Two registration overloads via AddKafkaDomainEvents

Project added to solution. Builds with 0 warnings.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.claude/settings.local.json

@@ -1,50 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(dotnet clean:*)",
-      "Bash(dotnet run)",
-      "Bash(dotnet add:*)",
-      "Bash(timeout 5 dotnet run:*)",
-      "Bash(dotnet remove:*)",
-      "Bash(netstat:*)",
-      "Bash(findstr:*)",
-      "Bash(cat:*)",
-      "Bash(taskkill:*)",
-      "WebSearch",
-      "Bash(dotnet tool install:*)",
-      "Bash(protogen:*)",
-      "Bash(timeout 15 dotnet run:*)",
-      "Bash(where:*)",
-      "Bash(timeout 30 dotnet run:*)",
-      "Bash(timeout 60 dotnet run:*)",
-      "Bash(timeout 120 dotnet run:*)",
-      "Bash(git add:*)",
-      "Bash(curl:*)",
-      "Bash(timeout 3 cmd:*)",
-      "Bash(timeout:*)",
-      "Bash(tasklist:*)",
-      "Bash(dotnet build:*)",
-      "Bash(dotnet --list-sdks:*)",
-      "Bash(dotnet sln:*)",
-      "Bash(pkill:*)",
-      "Bash(python3:*)",
-      "Bash(grpcurl:*)",
-      "Bash(lsof:*)",
-      "Bash(xargs kill -9)",
-      "Bash(dotnet run:*)",
-      "Bash(find:*)",
-      "Bash(dotnet pack:*)",
-      "Bash(unzip:*)",
-      "WebFetch(domain:andrewlock.net)",
-      "WebFetch(domain:github.com)",
-      "WebFetch(domain:stackoverflow.com)",
-      "WebFetch(domain:www.kenmuse.com)",
-      "WebFetch(domain:blog.rsuter.com)",
-      "WebFetch(domain:natemcmaster.com)",
-      "WebFetch(domain:www.nuget.org)",
-      "Bash(mkdir:*)"
-    ],
-    "deny": [],
-    "ask": []
-  }
-}

.editorconfig

@@ -0,0 +1,96 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{csproj,props,targets,xml}]
+indent_size = 2
+
+[*.{json,yml,yaml}]
+indent_size = 2
+
+[*.proto]
+indent_size = 2
+
+[*.cs]
+# Namespace
+csharp_style_namespace_declarations = file_scoped:warning
+
+# Braces — Allman style
+csharp_new_line_before_open_brace = all
+
+# Usings
+dotnet_sort_system_directives_first = true
+csharp_using_directive_placement = outside_namespace:warning
+
+# var preferences — use var when type is apparent
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:suggestion
+csharp_style_var_elsewhere = true:suggestion
+
+# Expression bodies — prefer for simple members
+csharp_style_expression_bodied_methods = when_on_single_line:suggestion
+csharp_style_expression_bodied_constructors = false:suggestion
+csharp_style_expression_bodied_operators = when_on_single_line:suggestion
+csharp_style_expression_bodied_properties = true:suggestion
+csharp_style_expression_bodied_accessors = true:suggestion
+csharp_style_expression_bodied_lambdas = true:suggestion
+
+# Pattern matching
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+
+# Null checking
+csharp_style_throw_expression = true:suggestion
+csharp_style_conditional_delegate_call = true:suggestion
+
+# Modifier preferences — exclude interface members (netstandard2.1 compat)
+dotnet_style_require_accessibility_modifiers = for_non_interface_members:warning
+
+# Field naming — _camelCase for private fields
+dotnet_naming_rule.private_fields_should_be_camel_case.severity = warning
+dotnet_naming_rule.private_fields_should_be_camel_case.symbols = private_fields
+dotnet_naming_rule.private_fields_should_be_camel_case.style = camel_case_underscore
+
+dotnet_naming_symbols.private_fields.applicable_kinds = field
+dotnet_naming_symbols.private_fields.applicable_accessibilities = private, protected, private_protected
+dotnet_naming_symbols.private_fields.required_modifiers =
+
+dotnet_naming_style.camel_case_underscore.required_prefix = _
+dotnet_naming_style.camel_case_underscore.capitalization = camel_case
+
+# Constants — PascalCase
+dotnet_naming_rule.constants_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.constants_should_be_pascal_case.symbols = constants
+dotnet_naming_rule.constants_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_symbols.constants.applicable_kinds = field
+dotnet_naming_symbols.constants.required_modifiers = const
+
+dotnet_naming_style.pascal_case.capitalization = pascal_case
+
+# Interfaces — I prefix
+dotnet_naming_rule.interfaces_should_begin_with_i.severity = warning
+dotnet_naming_rule.interfaces_should_begin_with_i.symbols = interfaces
+dotnet_naming_rule.interfaces_should_begin_with_i.style = begins_with_i
+
+dotnet_naming_symbols.interfaces.applicable_kinds = interface
+
+dotnet_naming_style.begins_with_i.required_prefix = I
+dotnet_naming_style.begins_with_i.capitalization = pascal_case
+
+# Async methods — Async suffix
+dotnet_naming_rule.async_methods_should_end_with_async.severity = suggestion
+dotnet_naming_rule.async_methods_should_end_with_async.symbols = async_methods
+dotnet_naming_rule.async_methods_should_end_with_async.style = ends_with_async
+
+dotnet_naming_symbols.async_methods.applicable_kinds = method
+dotnet_naming_symbols.async_methods.required_modifiers = async
+
+dotnet_naming_style.ends_with_async.required_suffix = Async
+dotnet_naming_style.ends_with_async.capitalization = pascal_case

CLAUDE.md

@@ -1,6 +1,6 @@
 # CLAUDE.md
 
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+This file provides guidance to AI agents when working with code in this repository.
 
 ## Project Overview
 

README.md

@@ -4,6 +4,15 @@
 
 Our implementation of query and command responsibility segregation (CQRS).
 
+## Where This Fits
+
+This is a backend framework of the [Svrnty Agent System](../README.md).
+
+**Layer**: Framework
+**Depends on**: Nothing (standalone .NET framework)
+**Depended on by**: a-gent-app (backend services), flutter_cqrs_datasource (client)
+**Git**: [git.openharbor.io/svrnty/dotnet-cqrs](https://git.openharbor.io/svrnty/dotnet-cqrs)
+
 ## Getting Started
 
 > Install nuget package to your awesome project.

Svrnty.CQRS.Abstractions/Attributes/CommandNameAttribute.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 
 namespace Svrnty.CQRS.Abstractions.Attributes;
 

Svrnty.CQRS.Abstractions/Attributes/QueryNameAttribute.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 
 namespace Svrnty.CQRS.Abstractions.Attributes;
 

Svrnty.CQRS.Abstractions/Discovery/CommandMeta.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Reflection;
 using Svrnty.CQRS.Abstractions.Attributes;
 

Svrnty.CQRS.Abstractions/Discovery/ICommandMeta.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 
 namespace Svrnty.CQRS.Abstractions.Discovery;
 

Svrnty.CQRS.Abstractions/Discovery/IQueryDiscovery.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 
 namespace Svrnty.CQRS.Abstractions.Discovery;

Svrnty.CQRS.Abstractions/Discovery/IQueryMeta.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 
 namespace Svrnty.CQRS.Abstractions.Discovery;
 
@@ -10,4 +10,4 @@ public interface IQueryMeta
     Type QueryResultType { get; }
     string Category { get; }
     string LowerCamelCaseName { get; }
-}
+}

Svrnty.CQRS.Abstractions/Discovery/QueryMeta.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Reflection;
 using Svrnty.CQRS.Abstractions.Attributes;
 

Svrnty.CQRS.Abstractions/ICommandHandler.cs

@@ -1,4 +1,4 @@
-using System.Threading;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace Svrnty.CQRS.Abstractions;
@@ -13,4 +13,4 @@ public interface ICommandHandler<in TCommand, TCommandResult>
     where TCommand : class
 {
     Task<TCommandResult> HandleAsync(TCommand command, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.Abstractions/IQueryHandler.cs

@@ -1,4 +1,4 @@
-using System.Threading;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace Svrnty.CQRS.Abstractions;
@@ -7,4 +7,4 @@ public interface IQueryHandler<in TQuery, TQueryResult>
     where TQuery : class
 {
     Task<TQueryResult> HandleAsync(TQuery query, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.Abstractions/Security/AuthorizationResult.cs

@@ -1,8 +1,8 @@
-namespace Svrnty.CQRS.Abstractions.Security;
+namespace Svrnty.CQRS.Abstractions.Security;
 
 public enum AuthorizationResult
 {
     Unauthorized,
     Forbidden,
     Allowed
-}
+}

Svrnty.CQRS.Abstractions/Security/ICommandAuthorizationService.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -7,4 +7,4 @@ namespace Svrnty.CQRS.Abstractions.Security;
 public interface ICommandAuthorizationService
 {
     Task<AuthorizationResult> IsAllowedAsync(Type commandType, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.Abstractions/Security/IQueryAuthorizationService.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -7,4 +7,4 @@ namespace Svrnty.CQRS.Abstractions.Security;
 public interface IQueryAuthorizationService
 {
     Task<AuthorizationResult> IsAllowedAsync(Type queryType, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.Abstractions/ServiceCollectionExtensions.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Extensions.DependencyInjection;
 using Svrnty.CQRS.Abstractions.Discovery;
 
@@ -47,4 +47,4 @@ public static class ServiceCollectionExtensions
 
         return services;
     }
-}
+}

Svrnty.CQRS.DynamicQuery.Abstractions/DynamicQueryInterceptorProvider.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 
 namespace Svrnty.CQRS.DynamicQuery.Abstractions;

Svrnty.CQRS.DynamicQuery.Abstractions/IAlterQueryableService.cs

@@ -1,4 +1,4 @@
-using System.Linq;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -13,4 +13,4 @@ public interface IAlterQueryableService<TSource, TDestination, in TParams>
     where TParams : class
 {
     Task<IQueryable<TSource>> AlterQueryableAsync(IQueryable<TSource> query, IDynamicQueryParams<TParams> dynamicQuery, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.DynamicQuery.Abstractions/IDynamicQuery.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using PoweredSoft.DynamicQuery.Core;
 
 namespace Svrnty.CQRS.DynamicQuery.Abstractions;
@@ -15,7 +15,7 @@ public interface IDynamicQuery<TSource, TDestination, out TParams> : IDynamicQue
     where TDestination : class
     where TParams : class
 {
-    
+
 }
 
 public interface IDynamicQuery
@@ -26,4 +26,4 @@ public interface IDynamicQuery
     List<IAggregate> GetAggregates();
     int? GetPage();
     int? GetPageSize();
-}
+}

Svrnty.CQRS.DynamicQuery.Abstractions/IDynamicQueryInterceptorProvider.cs

@@ -1,9 +1,9 @@
-using System;
+using System;
 using System.Collections.Generic;
 
 namespace Svrnty.CQRS.DynamicQuery.Abstractions;
-    
+
 public interface IDynamicQueryInterceptorProvider<TSource, TDestination>
 {
     IEnumerable<Type> GetInterceptorsTypes();
-}
+}

Svrnty.CQRS.DynamicQuery.Abstractions/IDynamicQueryParams.cs

@@ -1,4 +1,4 @@
-namespace Svrnty.CQRS.DynamicQuery.Abstractions;
+namespace Svrnty.CQRS.DynamicQuery.Abstractions;
 
 public interface IDynamicQueryParams<out TParams>
     where TParams : class

Svrnty.CQRS.DynamicQuery.Abstractions/IQueryableProvider.cs

@@ -1,4 +1,4 @@
-using System.Linq;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -7,4 +7,4 @@ namespace Svrnty.CQRS.DynamicQuery.Abstractions;
 public interface IQueryableProvider<TSource>
 {
     Task<IQueryable<TSource>> GetQueryableAsync(object query, CancellationToken cancellationToken = default);
-}
+}

Svrnty.CQRS.DynamicQuery.MinimalApi/EndpointRouteBuilderExtensions.cs

@@ -7,6 +7,7 @@ using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.DependencyInjection;
+using PoweredSoft.DynamicQuery.Core;
 using Svrnty.CQRS.Abstractions;
 using Svrnty.CQRS.Abstractions.Attributes;
 using Svrnty.CQRS.Abstractions.Discovery;
@@ -14,7 +15,6 @@ using Svrnty.CQRS.Abstractions.Security;
 using Svrnty.CQRS.DynamicQuery;
 using Svrnty.CQRS.DynamicQuery.Abstractions;
 using Svrnty.CQRS.DynamicQuery.Discover;
-using PoweredSoft.DynamicQuery.Core;
 
 namespace Svrnty.CQRS.DynamicQuery.MinimalApi;
 

Svrnty.CQRS.DynamicQuery/Discover/DynamicQueryMeta.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using Pluralize.NET;
 using Svrnty.CQRS.Abstractions.Discovery;
 
@@ -7,7 +7,7 @@ namespace Svrnty.CQRS.DynamicQuery.Discover;
 public class DynamicQueryMeta(Type queryType, Type serviceType, Type queryResultType)
   : QueryMeta(queryType, serviceType, queryResultType)
 {
-  public Type SourceType => QueryType.GetGenericArguments()[0];
+    public Type SourceType => QueryType.GetGenericArguments()[0];
     public Type DestinationType => QueryType.GetGenericArguments()[1];
     public override string Category => "DynamicQuery";
     public override string Name

Svrnty.CQRS.DynamicQuery/DynamicQuery.cs

@@ -1,8 +1,8 @@
 using System.Collections.Generic;
 using System.Linq;
-using Svrnty.CQRS.DynamicQuery.Abstractions;
 using PoweredSoft.DynamicQuery;
 using PoweredSoft.DynamicQuery.Core;
+using Svrnty.CQRS.DynamicQuery.Abstractions;
 
 namespace Svrnty.CQRS.DynamicQuery;
 

Svrnty.CQRS.DynamicQuery/DynamicQueryAggregate.cs

@@ -1,6 +1,6 @@
+using System;
 using PoweredSoft.DynamicQuery;
 using PoweredSoft.DynamicQuery.Core;
-using System;
 
 namespace Svrnty.CQRS.DynamicQuery;
 

Svrnty.CQRS.DynamicQuery/DynamicQueryHandler.cs

@@ -1,23 +1,23 @@
-using Svrnty.CQRS.DynamicQuery.Abstractions;
-using PoweredSoft.DynamicQuery.Core;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using PoweredSoft.DynamicQuery.Core;
+using Svrnty.CQRS.DynamicQuery.Abstractions;
 
 namespace Svrnty.CQRS.DynamicQuery;
 
 public class DynamicQueryHandler<TSource, TDestination>
-    : DynamicQueryHandlerBase<TSource, TDestination>, 
+    : DynamicQueryHandlerBase<TSource, TDestination>,
     Svrnty.CQRS.Abstractions.IQueryHandler<IDynamicQuery<TSource, TDestination>, IQueryExecutionResult<TDestination>>
     where TSource : class
     where TDestination : class
 {
-    public DynamicQueryHandler(IQueryHandlerAsync queryHandlerAsync, 
+    public DynamicQueryHandler(IQueryHandlerAsync queryHandlerAsync,
         IEnumerable<IQueryableProvider<TSource>> queryableProviders,
-        IEnumerable<IAlterQueryableService<TSource, TDestination>> alterQueryableServices, 
-        IEnumerable<IDynamicQueryInterceptorProvider<TSource, TDestination>> dynamicQueryInterceptorProviders, 
+        IEnumerable<IAlterQueryableService<TSource, TDestination>> alterQueryableServices,
+        IEnumerable<IDynamicQueryInterceptorProvider<TSource, TDestination>> dynamicQueryInterceptorProviders,
         IServiceProvider serviceProvider) : base(queryHandlerAsync, queryableProviders, alterQueryableServices, dynamicQueryInterceptorProviders, serviceProvider)
     {
     }
@@ -29,7 +29,7 @@ public class DynamicQueryHandler<TSource, TDestination>
 }
 
 public class DynamicQueryHandler<TSource, TDestination, TParams>
-    : DynamicQueryHandlerBase<TSource, TDestination>, 
+    : DynamicQueryHandlerBase<TSource, TDestination>,
     Svrnty.CQRS.Abstractions.IQueryHandler<IDynamicQuery<TSource, TDestination, TParams>, IQueryExecutionResult<TDestination>>
     where TSource : class
     where TDestination : class
@@ -37,10 +37,10 @@ public class DynamicQueryHandler<TSource, TDestination, TParams>
 {
     private readonly IEnumerable<IAlterQueryableService<TSource, TDestination, TParams>> alterQueryableServicesWithParams;
 
-    public DynamicQueryHandler(IQueryHandlerAsync queryHandlerAsync, 
+    public DynamicQueryHandler(IQueryHandlerAsync queryHandlerAsync,
         IEnumerable<IQueryableProvider<TSource>> queryableProviders,
         IEnumerable<IAlterQueryableService<TSource, TDestination>> alterQueryableServices,
-        IEnumerable<IAlterQueryableService<TSource, TDestination, TParams>> alterQueryableServicesWithParams, 
+        IEnumerable<IAlterQueryableService<TSource, TDestination, TParams>> alterQueryableServicesWithParams,
         IEnumerable<IDynamicQueryInterceptorProvider<TSource, TDestination>> dynamicQueryInterceptorProviders,
         IServiceProvider serviceProvider) : base(queryHandlerAsync, queryableProviders, alterQueryableServices, dynamicQueryInterceptorProviders, serviceProvider)
     {
@@ -49,7 +49,7 @@ public class DynamicQueryHandler<TSource, TDestination, TParams>
 
     protected override async Task<IQueryable<TSource>> AlterSourceAsync(IQueryable<TSource> source, IDynamicQuery query, CancellationToken cancellationToken)
     {
-        source =  await base.AlterSourceAsync(source, query, cancellationToken);
+        source = await base.AlterSourceAsync(source, query, cancellationToken);
 
         if (query is IDynamicQueryParams<TParams> withParams)
         {

Svrnty.CQRS.DynamicQuery/DynamicQueryHandlerBase.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
@@ -6,9 +6,9 @@ using System.Linq;
 using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
-using Svrnty.CQRS.DynamicQuery.Abstractions;
 using PoweredSoft.DynamicQuery;
 using PoweredSoft.DynamicQuery.Core;
+using Svrnty.CQRS.DynamicQuery.Abstractions;
 
 namespace Svrnty.CQRS.DynamicQuery;
 

Svrnty.CQRS.DynamicQuery/ServiceCollectionExtensions.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using PoweredSoft.Data.Core;
@@ -91,10 +91,10 @@ public static class ServiceCollectionExtensions
         where TParams : class
         => AddDynamicQueryWithParams<TSourceAndDestination, TSourceAndDestination, TParams>(services, name: name);
 
-        public static IServiceCollection AddDynamicQueryWithParams<TSource, TDestination, TParams>(this IServiceCollection services, string name = null)
-        where TSource : class
-        where TDestination : class
-        where TParams : class
+    public static IServiceCollection AddDynamicQueryWithParams<TSource, TDestination, TParams>(this IServiceCollection services, string name = null)
+    where TSource : class
+    where TDestination : class
+    where TParams : class
     {
         // add query handler.
         services.AddTransient<IQueryHandler<IDynamicQuery<TSource, TDestination, TParams>, IQueryExecutionResult<TDestination>>, DynamicQueryHandler<TSource, TDestination, TParams>>();
@@ -133,7 +133,7 @@ public static class ServiceCollectionExtensions
         where TParams : class
         where TService : class, IAlterQueryableService<TSourceAndTDestination, TSourceAndTDestination, TParams>
     {
-        return services.AddTransient<IAlterQueryableService< TSourceAndTDestination, TSourceAndTDestination, TParams>, TService>();
+        return services.AddTransient<IAlterQueryableService<TSourceAndTDestination, TSourceAndTDestination, TParams>, TService>();
     }
 
     public static IServiceCollection AddAlterQueryableWithParams<TSource, TDestination, TParams, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] TService>

Svrnty.CQRS.Events.Kafka/KafkaDomainEventPublisher.cs

@@ -0,0 +1,205 @@
+using System.Text;
+using System.Text.Json;
+using Confluent.Kafka;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Svrnty.CQRS.Events.Abstractions;
+
+namespace Svrnty.CQRS.Events.Kafka;
+
+/// <summary>
+/// Apache Kafka implementation of the domain event publisher.
+/// </summary>
+public class KafkaDomainEventPublisher : IDomainEventPublisher, IAsyncDisposable
+{
+    private readonly KafkaEventOptions _options;
+    private readonly ILogger<KafkaDomainEventPublisher> _logger;
+    private readonly IProducer<string, string> _producer;
+    private bool _disposed;
+
+    /// <summary>
+    /// Creates a new Kafka domain event publisher.
+    /// </summary>
+    public KafkaDomainEventPublisher(
+        IOptions<KafkaEventOptions> options,
+        ILogger<KafkaDomainEventPublisher> logger)
+    {
+        _options = options.Value;
+        _logger = logger;
+
+        var config = BuildProducerConfig();
+        _producer = new ProducerBuilder<string, string>(config)
+            .SetErrorHandler((_, e) => _logger.LogError("Kafka producer error: {Reason}", e.Reason))
+            .SetLogHandler((_, log) => _logger.LogDebug("Kafka: {Message}", log.Message))
+            .Build();
+    }
+
+    private ProducerConfig BuildProducerConfig()
+    {
+        var config = new ProducerConfig
+        {
+            BootstrapServers = _options.BootstrapServers,
+            ClientId = _options.ClientId,
+            EnableIdempotence = _options.EnableIdempotence,
+            MessageTimeoutMs = _options.MessageTimeoutMs,
+            Acks = (Acks)_options.Acks,
+            MessageSendMaxRetries = _options.Retries
+        };
+
+        // Configure security if specified
+        if (!string.IsNullOrEmpty(_options.SecurityProtocol) &&
+            _options.SecurityProtocol != "Plaintext")
+        {
+            config.SecurityProtocol = Enum.Parse<SecurityProtocol>(_options.SecurityProtocol);
+        }
+
+        if (!string.IsNullOrEmpty(_options.SaslMechanism))
+        {
+            config.SaslMechanism = Enum.Parse<SaslMechanism>(_options.SaslMechanism);
+            config.SaslUsername = _options.SaslUsername;
+            config.SaslPassword = _options.SaslPassword;
+        }
+
+        return config;
+    }
+
+    /// <inheritdoc />
+    public async Task PublishAsync<TEvent>(TEvent @event, CancellationToken cancellationToken = default)
+        where TEvent : IDomainEvent
+    {
+        ObjectDisposedException.ThrowIf(_disposed, this);
+
+        var eventTypeName = typeof(TEvent).Name;
+        var topic = GetTopicName(eventTypeName);
+        var key = GetEventKey(@event);
+        var value = JsonSerializer.Serialize(@event);
+
+        var message = new Message<string, string>
+        {
+            Key = key,
+            Value = value,
+            Headers = new Headers
+            {
+                { "event-type", Encoding.UTF8.GetBytes(eventTypeName) },
+                { "event-id", Encoding.UTF8.GetBytes(@event.EventId.ToString()) },
+                { "occurred-at", Encoding.UTF8.GetBytes(@event.OccurredAt.ToString("O")) },
+                { "content-type", Encoding.UTF8.GetBytes("application/json") }
+            }
+        };
+
+        try
+        {
+            var result = await _producer.ProduceAsync(topic, message, cancellationToken);
+
+            _logger.LogDebug(
+                "Published event {EventType} with ID {EventId} to topic {Topic}, partition {Partition}, offset {Offset}",
+                eventTypeName,
+                @event.EventId,
+                topic,
+                result.Partition.Value,
+                result.Offset.Value);
+        }
+        catch (ProduceException<string, string> ex)
+        {
+            _logger.LogError(ex,
+                "Failed to publish event {EventType} with ID {EventId} to topic {Topic}: {Error}",
+                eventTypeName,
+                @event.EventId,
+                topic,
+                ex.Error.Reason);
+            throw;
+        }
+    }
+
+    private string GetTopicName(string eventTypeName)
+    {
+        // Use custom mapper if provided
+        if (_options.TopicMapper != null)
+        {
+            return _options.TopicMapper(eventTypeName);
+        }
+
+        // Default mapping: group events by category
+        // e.g., RequestCreatedEvent -> {prefix}.requests
+        // e.g., ContainerSpawnedEvent -> {prefix}.containers
+        var category = GetEventCategory(eventTypeName);
+        return $"{_options.TopicPrefix}.{category}";
+    }
+
+    private static string GetEventCategory(string eventTypeName)
+    {
+        // Remove "Event" suffix
+        var name = eventTypeName.Replace("Event", "");
+
+        // Map to categories based on prefix
+        return name switch
+        {
+            var n when n.StartsWith("Request") => "requests",
+            var n when n.StartsWith("Container") => "containers",
+            var n when n.StartsWith("Plan") => "plans",
+            var n when n.StartsWith("Project") => "projects",
+            var n when n.StartsWith("Solution") => "solutions",
+            var n when n.StartsWith("Claude") || n.StartsWith("Session") => "sessions",
+            var n when n.StartsWith("Worker") => "workers",
+            var n when n.StartsWith("Deployment") => "deployments",
+            _ => "events" // Default catch-all topic
+        };
+    }
+
+    private static string GetEventKey<TEvent>(TEvent @event) where TEvent : IDomainEvent
+    {
+        // Use reflection to find the best partition key
+        // Priority: RequestId > ProjectId > SolutionId > EventId
+        var type = typeof(TEvent);
+
+        // Try RequestId first (most common for request-scoped events)
+        var requestIdProp = type.GetProperty("RequestId");
+        if (requestIdProp?.GetValue(@event) is Guid requestId && requestId != Guid.Empty)
+        {
+            return requestId.ToString();
+        }
+
+        // Try ContainerId
+        var containerIdProp = type.GetProperty("ContainerId");
+        if (containerIdProp?.GetValue(@event) is Guid containerId && containerId != Guid.Empty)
+        {
+            return containerId.ToString();
+        }
+
+        // Try ProjectId
+        var projectIdProp = type.GetProperty("ProjectId");
+        if (projectIdProp?.GetValue(@event) is Guid projectId && projectId != Guid.Empty)
+        {
+            return projectId.ToString();
+        }
+
+        // Try SolutionId
+        var solutionIdProp = type.GetProperty("SolutionId");
+        if (solutionIdProp?.GetValue(@event) is Guid solutionId && solutionId != Guid.Empty)
+        {
+            return solutionId.ToString();
+        }
+
+        // Fall back to EventId
+        return @event.EventId.ToString();
+    }
+
+    /// <inheritdoc />
+    public ValueTask DisposeAsync()
+    {
+        if (_disposed)
+        {
+            return ValueTask.CompletedTask;
+        }
+
+        _disposed = true;
+
+        // Flush pending messages with timeout
+        _producer.Flush(TimeSpan.FromSeconds(10));
+        _producer.Dispose();
+
+        _logger.LogDebug("Kafka domain event publisher disposed");
+
+        return ValueTask.CompletedTask;
+    }
+}

Svrnty.CQRS.Events.Kafka/KafkaEventOptions.cs

@@ -0,0 +1,72 @@
+namespace Svrnty.CQRS.Events.Kafka;
+
+/// <summary>
+/// Configuration options for Kafka domain event publishing.
+/// </summary>
+public class KafkaEventOptions
+{
+    /// <summary>
+    /// Kafka bootstrap servers. Default: localhost:9092
+    /// </summary>
+    public string BootstrapServers { get; set; } = "localhost:9092";
+
+    /// <summary>
+    /// Prefix for Kafka topics. Default: domain
+    /// Events will be published to topics like {TopicPrefix}.{category}
+    /// </summary>
+    public string TopicPrefix { get; set; } = "domain";
+
+    /// <summary>
+    /// Client identifier for Kafka producer. Default: cqrs-events
+    /// </summary>
+    public string ClientId { get; set; } = "cqrs-events";
+
+    /// <summary>
+    /// Enable idempotent producer for exactly-once semantics. Default: true
+    /// </summary>
+    public bool EnableIdempotence { get; set; } = true;
+
+    /// <summary>
+    /// Message timeout in milliseconds. Default: 30000 (30 seconds)
+    /// </summary>
+    public int MessageTimeoutMs { get; set; } = 30000;
+
+    /// <summary>
+    /// Security protocol. Default: Plaintext
+    /// Options: Plaintext, Ssl, SaslPlaintext, SaslSsl
+    /// </summary>
+    public string SecurityProtocol { get; set; } = "Plaintext";
+
+    /// <summary>
+    /// SASL mechanism for authentication. Optional.
+    /// Options: Plain, ScramSha256, ScramSha512
+    /// </summary>
+    public string? SaslMechanism { get; set; }
+
+    /// <summary>
+    /// SASL username for authentication. Optional.
+    /// </summary>
+    public string? SaslUsername { get; set; }
+
+    /// <summary>
+    /// SASL password for authentication. Optional.
+    /// </summary>
+    public string? SaslPassword { get; set; }
+
+    /// <summary>
+    /// Number of acknowledgements required. Default: All (-1)
+    /// Options: None (0), Leader (1), All (-1)
+    /// </summary>
+    public int Acks { get; set; } = -1;
+
+    /// <summary>
+    /// Maximum number of retries. Default: 3
+    /// </summary>
+    public int Retries { get; set; } = 3;
+
+    /// <summary>
+    /// Custom topic mapping function. If not set, default mapping is used.
+    /// Maps event type name to topic name.
+    /// </summary>
+    public Func<string, string>? TopicMapper { get; set; }
+}

Svrnty.CQRS.Events.Kafka/ServiceCollectionExtensions.cs

@@ -0,0 +1,53 @@
+using Microsoft.Extensions.DependencyInjection;
+using Svrnty.CQRS.Events.Abstractions;
+
+namespace Svrnty.CQRS.Events.Kafka;
+
+/// <summary>
+/// Extension methods for registering Kafka domain event publishing.
+/// </summary>
+public static class ServiceCollectionExtensions
+{
+    /// <summary>
+    /// Adds Kafka domain event publishing to the service collection.
+    /// </summary>
+    /// <param name="services">The service collection.</param>
+    /// <param name="configure">Optional configuration action for Kafka options.</param>
+    /// <returns>The service collection for chaining.</returns>
+    public static IServiceCollection AddKafkaDomainEvents(
+        this IServiceCollection services,
+        Action<KafkaEventOptions>? configure = null)
+    {
+        if (configure != null)
+        {
+            services.Configure(configure);
+        }
+
+        services.AddSingleton<IDomainEventPublisher, KafkaDomainEventPublisher>();
+
+        return services;
+    }
+
+    /// <summary>
+    /// Adds Kafka domain event publishing with custom topic mapping.
+    /// </summary>
+    /// <param name="services">The service collection.</param>
+    /// <param name="topicMapper">Custom function to map event type names to topic names.</param>
+    /// <param name="configure">Optional configuration action for other Kafka options.</param>
+    /// <returns>The service collection for chaining.</returns>
+    public static IServiceCollection AddKafkaDomainEvents(
+        this IServiceCollection services,
+        Func<string, string> topicMapper,
+        Action<KafkaEventOptions>? configure = null)
+    {
+        services.Configure<KafkaEventOptions>(options =>
+        {
+            options.TopicMapper = topicMapper;
+            configure?.Invoke(options);
+        });
+
+        services.AddSingleton<IDomainEventPublisher, KafkaDomainEventPublisher>();
+
+        return services;
+    }
+}

Svrnty.CQRS.Events.Kafka/Svrnty.CQRS.Events.Kafka.csproj

@@ -0,0 +1,41 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <IsAotCompatible>false</IsAotCompatible>
+    <LangVersion>14</LangVersion>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+
+    <Company>Svrnty</Company>
+    <Authors>David Lebee, Mathias Beaulieu-Duncan</Authors>
+    <PackageIcon>icon.png</PackageIcon>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <RepositoryUrl>https://git.openharbor.io/svrnty/dotnet-cqrs</RepositoryUrl>
+    <RepositoryType>git</RepositoryType>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <Description>Apache Kafka domain event publishing for Svrnty.CQRS framework</Description>
+
+    <DebugType>portable</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+    <IncludeSymbols>true</IncludeSymbols>
+    <IncludeSource>true</IncludeSource>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="..\icon.png" Pack="true" PackagePath="" CopyToOutputDirectory="Always" />
+    <None Include="..\README.md" Pack="true" PackagePath="" CopyToOutputDirectory="Always" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Svrnty.CQRS.Events.Abstractions\Svrnty.CQRS.Events.Abstractions.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Confluent.Kafka" Version="2.6.1" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Options" Version="10.0.0" />
+  </ItemGroup>
+</Project>

Svrnty.CQRS.FluentValidation/ServiceCollectionExtensions.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.CodeAnalysis;
 using FluentValidation;
 using Microsoft.Extensions.DependencyInjection;
 using Svrnty.CQRS.Abstractions;
@@ -39,7 +39,7 @@ public static class ServiceCollectionExtensions
     {
         services.AddQuery<TQuery, TQueryResult, TQueryHandler>()
                 .AddFluentValidator<TQuery, TValidator>();
-        
+
         return services;
     }
-}
+}

Svrnty.CQRS.Grpc.Generators/Helpers/ProtoTypeMapper.cs

@@ -1,102 +1,101 @@
 using System.Collections.Generic;
 
-namespace Svrnty.CQRS.Grpc.Generators.Helpers
+namespace Svrnty.CQRS.Grpc.Generators.Helpers;
+
+internal static class ProtoTypeMapper
 {
-    internal static class ProtoTypeMapper
+    private static readonly Dictionary<string, string> TypeMap = new Dictionary<string, string>
     {
-        private static readonly Dictionary<string, string> TypeMap = new Dictionary<string, string>
+        // Primitives
+        { "System.String", "string" },
+        { "System.Boolean", "bool" },
+        { "System.Int32", "int32" },
+        { "System.Int64", "int64" },
+        { "System.UInt32", "uint32" },
+        { "System.UInt64", "uint64" },
+        { "System.Single", "float" },
+        { "System.Double", "double" },
+        { "System.Byte", "uint32" },
+        { "System.SByte", "int32" },
+        { "System.Int16", "int32" },
+        { "System.UInt16", "uint32" },
+        { "System.Decimal", "string" }, // Decimal as string to preserve precision
+        { "System.DateTime", "int64" }, // Unix timestamp
+        { "System.DateTimeOffset", "int64" }, // Unix timestamp
+        { "System.Guid", "string" },
+        { "System.TimeSpan", "int64" }, // Ticks
+
+        // Nullable variants
+        { "System.Boolean?", "bool" },
+        { "System.Int32?", "int32" },
+        { "System.Int64?", "int64" },
+        { "System.UInt32?", "uint32" },
+        { "System.UInt64?", "uint64" },
+        { "System.Single?", "float" },
+        { "System.Double?", "double" },
+        { "System.Byte?", "uint32" },
+        { "System.SByte?", "int32" },
+        { "System.Int16?", "int32" },
+        { "System.UInt16?", "uint32" },
+        { "System.Decimal?", "string" },
+        { "System.DateTime?", "int64" },
+        { "System.DateTimeOffset?", "int64" },
+        { "System.Guid?", "string" },
+        { "System.TimeSpan?", "int64" },
+    };
+
+    public static string MapToProtoType(string csharpType, out bool isRepeated, out bool isOptional)
+    {
+        isRepeated = false;
+        isOptional = false;
+
+        // Handle byte[] as bytes proto type (NOT repeated uint32)
+        if (csharpType == "System.Byte[]" || csharpType == "byte[]" || csharpType == "Byte[]")
         {
-            // Primitives
-            { "System.String", "string" },
-            { "System.Boolean", "bool" },
-            { "System.Int32", "int32" },
-            { "System.Int64", "int64" },
-            { "System.UInt32", "uint32" },
-            { "System.UInt64", "uint64" },
-            { "System.Single", "float" },
-            { "System.Double", "double" },
-            { "System.Byte", "uint32" },
-            { "System.SByte", "int32" },
-            { "System.Int16", "int32" },
-            { "System.UInt16", "uint32" },
-            { "System.Decimal", "string" }, // Decimal as string to preserve precision
-            { "System.DateTime", "int64" }, // Unix timestamp
-            { "System.DateTimeOffset", "int64" }, // Unix timestamp
-            { "System.Guid", "string" },
-            { "System.TimeSpan", "int64" }, // Ticks
-
-            // Nullable variants
-            { "System.Boolean?", "bool" },
-            { "System.Int32?", "int32" },
-            { "System.Int64?", "int64" },
-            { "System.UInt32?", "uint32" },
-            { "System.UInt64?", "uint64" },
-            { "System.Single?", "float" },
-            { "System.Double?", "double" },
-            { "System.Byte?", "uint32" },
-            { "System.SByte?", "int32" },
-            { "System.Int16?", "int32" },
-            { "System.UInt16?", "uint32" },
-            { "System.Decimal?", "string" },
-            { "System.DateTime?", "int64" },
-            { "System.DateTimeOffset?", "int64" },
-            { "System.Guid?", "string" },
-            { "System.TimeSpan?", "int64" },
-        };
-
-        public static string MapToProtoType(string csharpType, out bool isRepeated, out bool isOptional)
-        {
-            isRepeated = false;
-            isOptional = false;
-
-            // Handle byte[] as bytes proto type (NOT repeated uint32)
-            if (csharpType == "System.Byte[]" || csharpType == "byte[]" || csharpType == "Byte[]")
-            {
-                return "bytes";
-            }
-
-            // Handle arrays
-            if (csharpType.EndsWith("[]"))
-            {
-                isRepeated = true;
-                var elementType = csharpType.Substring(0, csharpType.Length - 2);
-                return MapToProtoType(elementType, out _, out _);
-            }
-
-            // Handle generic collections
-            if (csharpType.StartsWith("System.Collections.Generic.List<") ||
-                csharpType.StartsWith("System.Collections.Generic.IList<") ||
-                csharpType.StartsWith("System.Collections.Generic.IEnumerable<") ||
-                csharpType.StartsWith("System.Collections.Generic.ICollection<"))
-            {
-                isRepeated = true;
-                var startIndex = csharpType.IndexOf('<') + 1;
-                var endIndex = csharpType.LastIndexOf('>');
-                var elementType = csharpType.Substring(startIndex, endIndex - startIndex);
-                return MapToProtoType(elementType, out _, out _);
-            }
-
-            // Handle nullable value types
-            if (csharpType.EndsWith("?"))
-            {
-                isOptional = true;
-            }
-
-            // Check if it's a known primitive type
-            if (TypeMap.TryGetValue(csharpType, out var protoType))
-            {
-                return protoType;
-            }
-
-            // For unknown types, assume it's a custom message type
-            // Extract just the type name without namespace
-            var lastDot = csharpType.LastIndexOf('.');
-            if (lastDot >= 0)
-            {
-                return csharpType.Substring(lastDot + 1).Replace("?", "");
-            }
-
-            return csharpType.Replace("?", "");
+            return "bytes";
         }
+
+        // Handle arrays
+        if (csharpType.EndsWith("[]"))
+        {
+            isRepeated = true;
+            var elementType = csharpType.Substring(0, csharpType.Length - 2);
+            return MapToProtoType(elementType, out _, out _);
+        }
+
+        // Handle generic collections
+        if (csharpType.StartsWith("System.Collections.Generic.List<") ||
+            csharpType.StartsWith("System.Collections.Generic.IList<") ||
+            csharpType.StartsWith("System.Collections.Generic.IEnumerable<") ||
+            csharpType.StartsWith("System.Collections.Generic.ICollection<"))
+        {
+            isRepeated = true;
+            var startIndex = csharpType.IndexOf('<') + 1;
+            var endIndex = csharpType.LastIndexOf('>');
+            var elementType = csharpType.Substring(startIndex, endIndex - startIndex);
+            return MapToProtoType(elementType, out _, out _);
+        }
+
+        // Handle nullable value types
+        if (csharpType.EndsWith("?"))
+        {
+            isOptional = true;
+        }
+
+        // Check if it's a known primitive type
+        if (TypeMap.TryGetValue(csharpType, out var protoType))
+        {
+            return protoType;
+        }
+
+        // For unknown types, assume it's a custom message type
+        // Extract just the type name without namespace
+        var lastDot = csharpType.LastIndexOf('.');
+        if (lastDot >= 0)
+        {
+            return csharpType.Substring(lastDot + 1).Replace("?", "");
+        }
+
+        return csharpType.Replace("?", "");
     }
 }

Svrnty.CQRS.Grpc.Generators/Models/CommandInfo.cs

@@ -1,83 +1,82 @@
 using System.Collections.Generic;
 using Microsoft.CodeAnalysis;
 
-namespace Svrnty.CQRS.Grpc.Generators.Models
+namespace Svrnty.CQRS.Grpc.Generators.Models;
+
+public class CommandInfo
 {
-    public class CommandInfo
+    public string Name { get; set; }
+    public string FullyQualifiedName { get; set; }
+    public string Namespace { get; set; }
+    public List<PropertyInfo> Properties { get; set; }
+    public string? ResultType { get; set; }
+    public string? ResultFullyQualifiedName { get; set; }
+    public bool HasResult => ResultType != null;
+    public string HandlerInterfaceName { get; set; }
+    public List<PropertyInfo> ResultProperties { get; set; }
+    public bool IsResultPrimitiveType { get; set; }
+
+    public CommandInfo()
     {
-        public string Name { get; set; }
-        public string FullyQualifiedName { get; set; }
-        public string Namespace { get; set; }
-        public List<PropertyInfo> Properties { get; set; }
-        public string? ResultType { get; set; }
-        public string? ResultFullyQualifiedName { get; set; }
-        public bool HasResult => ResultType != null;
-        public string HandlerInterfaceName { get; set; }
-        public List<PropertyInfo> ResultProperties { get; set; }
-        public bool IsResultPrimitiveType { get; set; }
-
-        public CommandInfo()
-        {
-            Name = string.Empty;
-            FullyQualifiedName = string.Empty;
-            Namespace = string.Empty;
-            Properties = new List<PropertyInfo>();
-            HandlerInterfaceName = string.Empty;
-            ResultProperties = new List<PropertyInfo>();
-            IsResultPrimitiveType = false;
-        }
-    }
-
-    public class PropertyInfo
-    {
-        public string Name { get; set; }
-        public string Type { get; set; }
-        public string FullyQualifiedType { get; set; }
-        public string ProtoType { get; set; }
-        public int FieldNumber { get; set; }
-        public bool IsComplexType { get; set; }
-        public List<PropertyInfo> NestedProperties { get; set; }
-
-        // Type conversion metadata
-        public bool IsEnum { get; set; }
-        public bool IsList { get; set; }
-        public bool IsNullable { get; set; }
-        public bool IsDecimal { get; set; }
-        public bool IsDateTime { get; set; }
-        public bool IsDateTimeOffset { get; set; }
-        public bool IsGuid { get; set; }
-        public bool IsJsonElement { get; set; }
-        public bool IsBinaryType { get; set; }  // Stream, byte[], MemoryStream
-        public bool IsStream { get; set; }      // Specifically Stream types (not byte[])
-        public bool IsReadOnly { get; set; }    // Read-only/computed properties should be skipped
-        public bool IsValueTypeCollection { get; set; }  // Value types that implement IList<T> (like NpgsqlPolygon)
-        public string? ElementType { get; set; }
-        public bool IsElementComplexType { get; set; }
-        public bool IsElementGuid { get; set; }
-        public List<PropertyInfo>? ElementNestedProperties { get; set; }
-
-        public PropertyInfo()
-        {
-            Name = string.Empty;
-            Type = string.Empty;
-            FullyQualifiedType = string.Empty;
-            ProtoType = string.Empty;
-            IsComplexType = false;
-            NestedProperties = new List<PropertyInfo>();
-            IsEnum = false;
-            IsList = false;
-            IsNullable = false;
-            IsDecimal = false;
-            IsDateTime = false;
-            IsDateTimeOffset = false;
-            IsGuid = false;
-            IsJsonElement = false;
-            IsBinaryType = false;
-            IsStream = false;
-            IsReadOnly = false;
-            IsValueTypeCollection = false;
-            IsElementComplexType = false;
-            IsElementGuid = false;
-        }
+        Name = string.Empty;
+        FullyQualifiedName = string.Empty;
+        Namespace = string.Empty;
+        Properties = new List<PropertyInfo>();
+        HandlerInterfaceName = string.Empty;
+        ResultProperties = new List<PropertyInfo>();
+        IsResultPrimitiveType = false;
+    }
+}
+
+public class PropertyInfo
+{
+    public string Name { get; set; }
+    public string Type { get; set; }
+    public string FullyQualifiedType { get; set; }
+    public string ProtoType { get; set; }
+    public int FieldNumber { get; set; }
+    public bool IsComplexType { get; set; }
+    public List<PropertyInfo> NestedProperties { get; set; }
+
+    // Type conversion metadata
+    public bool IsEnum { get; set; }
+    public bool IsList { get; set; }
+    public bool IsNullable { get; set; }
+    public bool IsDecimal { get; set; }
+    public bool IsDateTime { get; set; }
+    public bool IsDateTimeOffset { get; set; }
+    public bool IsGuid { get; set; }
+    public bool IsJsonElement { get; set; }
+    public bool IsBinaryType { get; set; }  // Stream, byte[], MemoryStream
+    public bool IsStream { get; set; }      // Specifically Stream types (not byte[])
+    public bool IsReadOnly { get; set; }    // Read-only/computed properties should be skipped
+    public bool IsValueTypeCollection { get; set; }  // Value types that implement IList<T> (like NpgsqlPolygon)
+    public string? ElementType { get; set; }
+    public bool IsElementComplexType { get; set; }
+    public bool IsElementGuid { get; set; }
+    public List<PropertyInfo>? ElementNestedProperties { get; set; }
+
+    public PropertyInfo()
+    {
+        Name = string.Empty;
+        Type = string.Empty;
+        FullyQualifiedType = string.Empty;
+        ProtoType = string.Empty;
+        IsComplexType = false;
+        NestedProperties = new List<PropertyInfo>();
+        IsEnum = false;
+        IsList = false;
+        IsNullable = false;
+        IsDecimal = false;
+        IsDateTime = false;
+        IsDateTimeOffset = false;
+        IsGuid = false;
+        IsJsonElement = false;
+        IsBinaryType = false;
+        IsStream = false;
+        IsReadOnly = false;
+        IsValueTypeCollection = false;
+        IsElementComplexType = false;
+        IsElementGuid = false;
     }
 }

Svrnty.CQRS.Grpc.Generators/Models/DynamicQueryInfo.cs

@@ -1,28 +1,27 @@
-namespace Svrnty.CQRS.Grpc.Generators.Models
-{
-    public class DynamicQueryInfo
-    {
-        public string Name { get; set; }
-        public string SourceType { get; set; }
-        public string SourceTypeFullyQualified { get; set; }
-        public string DestinationType { get; set; }
-        public string DestinationTypeFullyQualified { get; set; }
-        public string? ParamsType { get; set; }
-        public string? ParamsTypeFullyQualified { get; set; }
-        public string HandlerInterfaceName { get; set; }
-        public string QueryInterfaceName { get; set; }
-        public bool HasParams { get; set; }
+namespace Svrnty.CQRS.Grpc.Generators.Models;
 
-        public DynamicQueryInfo()
-        {
-            Name = string.Empty;
-            SourceType = string.Empty;
-            SourceTypeFullyQualified = string.Empty;
-            DestinationType = string.Empty;
-            DestinationTypeFullyQualified = string.Empty;
-            HandlerInterfaceName = string.Empty;
-            QueryInterfaceName = string.Empty;
-            HasParams = false;
-        }
+public class DynamicQueryInfo
+{
+    public string Name { get; set; }
+    public string SourceType { get; set; }
+    public string SourceTypeFullyQualified { get; set; }
+    public string DestinationType { get; set; }
+    public string DestinationTypeFullyQualified { get; set; }
+    public string? ParamsType { get; set; }
+    public string? ParamsTypeFullyQualified { get; set; }
+    public string HandlerInterfaceName { get; set; }
+    public string QueryInterfaceName { get; set; }
+    public bool HasParams { get; set; }
+
+    public DynamicQueryInfo()
+    {
+        Name = string.Empty;
+        SourceType = string.Empty;
+        SourceTypeFullyQualified = string.Empty;
+        DestinationType = string.Empty;
+        DestinationTypeFullyQualified = string.Empty;
+        HandlerInterfaceName = string.Empty;
+        QueryInterfaceName = string.Empty;
+        HasParams = false;
     }
 }

Svrnty.CQRS.Grpc.Generators/Models/NotificationInfo.cs

@@ -1,50 +1,49 @@
 using System.Collections.Generic;
 
-namespace Svrnty.CQRS.Grpc.Generators.Models
+namespace Svrnty.CQRS.Grpc.Generators.Models;
+
+/// <summary>
+/// Represents a discovered streaming notification type for proto/gRPC generation.
+/// </summary>
+public class NotificationInfo
 {
     /// <summary>
-    /// Represents a discovered streaming notification type for proto/gRPC generation.
+    /// The notification type name (e.g., "InventoryChangeNotification").
     /// </summary>
-    public class NotificationInfo
+    public string Name { get; set; }
+
+    /// <summary>
+    /// The fully qualified type name including namespace.
+    /// </summary>
+    public string FullyQualifiedName { get; set; }
+
+    /// <summary>
+    /// The namespace of the notification type.
+    /// </summary>
+    public string Namespace { get; set; }
+
+    /// <summary>
+    /// The property name used as the subscription key (from [StreamingNotification] attribute).
+    /// </summary>
+    public string SubscriptionKeyProperty { get; set; }
+
+    /// <summary>
+    /// The subscription key property info.
+    /// </summary>
+    public PropertyInfo SubscriptionKeyInfo { get; set; }
+
+    /// <summary>
+    /// All properties of the notification type.
+    /// </summary>
+    public List<PropertyInfo> Properties { get; set; }
+
+    public NotificationInfo()
     {
-        /// <summary>
-        /// The notification type name (e.g., "InventoryChangeNotification").
-        /// </summary>
-        public string Name { get; set; }
-
-        /// <summary>
-        /// The fully qualified type name including namespace.
-        /// </summary>
-        public string FullyQualifiedName { get; set; }
-
-        /// <summary>
-        /// The namespace of the notification type.
-        /// </summary>
-        public string Namespace { get; set; }
-
-        /// <summary>
-        /// The property name used as the subscription key (from [StreamingNotification] attribute).
-        /// </summary>
-        public string SubscriptionKeyProperty { get; set; }
-
-        /// <summary>
-        /// The subscription key property info.
-        /// </summary>
-        public PropertyInfo SubscriptionKeyInfo { get; set; }
-
-        /// <summary>
-        /// All properties of the notification type.
-        /// </summary>
-        public List<PropertyInfo> Properties { get; set; }
-
-        public NotificationInfo()
-        {
-            Name = string.Empty;
-            FullyQualifiedName = string.Empty;
-            Namespace = string.Empty;
-            SubscriptionKeyProperty = string.Empty;
-            SubscriptionKeyInfo = new PropertyInfo();
-            Properties = new List<PropertyInfo>();
-        }
+        Name = string.Empty;
+        FullyQualifiedName = string.Empty;
+        Namespace = string.Empty;
+        SubscriptionKeyProperty = string.Empty;
+        SubscriptionKeyInfo = new PropertyInfo();
+        Properties = new List<PropertyInfo>();
     }
 }

Svrnty.CQRS.Grpc.Generators/Models/QueryInfo.cs

@@ -1,30 +1,29 @@
 using System.Collections.Generic;
 
-namespace Svrnty.CQRS.Grpc.Generators.Models
-{
-    public class QueryInfo
-    {
-        public string Name { get; set; }
-        public string FullyQualifiedName { get; set; }
-        public string Namespace { get; set; }
-        public List<PropertyInfo> Properties { get; set; }
-        public string ResultType { get; set; }
-        public string ResultFullyQualifiedName { get; set; }
-        public string HandlerInterfaceName { get; set; }
-        public List<PropertyInfo> ResultProperties { get; set; }
-        public bool IsResultPrimitiveType { get; set; }
+namespace Svrnty.CQRS.Grpc.Generators.Models;
 
-        public QueryInfo()
-        {
-            Name = string.Empty;
-            FullyQualifiedName = string.Empty;
-            Namespace = string.Empty;
-            Properties = new List<PropertyInfo>();
-            ResultType = string.Empty;
-            ResultFullyQualifiedName = string.Empty;
-            HandlerInterfaceName = string.Empty;
-            ResultProperties = new List<PropertyInfo>();
-            IsResultPrimitiveType = false;
-        }
+public class QueryInfo
+{
+    public string Name { get; set; }
+    public string FullyQualifiedName { get; set; }
+    public string Namespace { get; set; }
+    public List<PropertyInfo> Properties { get; set; }
+    public string ResultType { get; set; }
+    public string ResultFullyQualifiedName { get; set; }
+    public string HandlerInterfaceName { get; set; }
+    public List<PropertyInfo> ResultProperties { get; set; }
+    public bool IsResultPrimitiveType { get; set; }
+
+    public QueryInfo()
+    {
+        Name = string.Empty;
+        FullyQualifiedName = string.Empty;
+        Namespace = string.Empty;
+        Properties = new List<PropertyInfo>();
+        ResultType = string.Empty;
+        ResultFullyQualifiedName = string.Empty;
+        HandlerInterfaceName = string.Empty;
+        ResultProperties = new List<PropertyInfo>();
+        IsResultPrimitiveType = false;
     }
 }

Svrnty.CQRS.sln

@@ -43,6 +43,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Svrnty.CQRS.Events.Abstract
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Svrnty.CQRS.Events.RabbitMQ", "Svrnty.CQRS.Events.RabbitMQ\Svrnty.CQRS.Events.RabbitMQ.csproj", "{3C7412EF-13C2-41F3-9D4C-D2BEC4843C8C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Svrnty.CQRS.Events.Kafka", "Svrnty.CQRS.Events.Kafka\Svrnty.CQRS.Events.Kafka.csproj", "{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -257,6 +259,18 @@ Global
 		{3C7412EF-13C2-41F3-9D4C-D2BEC4843C8C}.Release|x64.Build.0 = Release|Any CPU
 		{3C7412EF-13C2-41F3-9D4C-D2BEC4843C8C}.Release|x86.ActiveCfg = Release|Any CPU
 		{3C7412EF-13C2-41F3-9D4C-D2BEC4843C8C}.Release|x86.Build.0 = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|x64.Build.0 = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Debug|x86.Build.0 = Debug|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|x64.ActiveCfg = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|x64.Build.0 = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|x86.ActiveCfg = Release|Any CPU
+		{D367A93B-2DE7-41AC-9BF1-A49AC4617AFD}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Svrnty.CQRS/Configuration/CqrsBuilder.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Extensions.DependencyInjection;
 using Svrnty.CQRS.Abstractions;
 using Svrnty.CQRS.Discovery;
@@ -43,7 +44,7 @@ public class CqrsBuilder
     /// <summary>
     /// Adds a command handler to the CQRS pipeline
     /// </summary>
-    public CqrsBuilder AddCommand<TCommand, TCommandHandler>()
+    public CqrsBuilder AddCommand<TCommand, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] TCommandHandler>()
         where TCommand : class
         where TCommandHandler : class, ICommandHandler<TCommand>
     {
@@ -54,7 +55,7 @@ public class CqrsBuilder
     /// <summary>
     /// Adds a command handler with result to the CQRS pipeline
     /// </summary>
-    public CqrsBuilder AddCommand<TCommand, TResult, TCommandHandler>()
+    public CqrsBuilder AddCommand<TCommand, TResult, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] TCommandHandler>()
         where TCommand : class
         where TCommandHandler : class, ICommandHandler<TCommand, TResult>
     {

Svrnty.CQRS/Discovery/CommandDiscovery.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Svrnty.CQRS.Abstractions.Discovery;

Svrnty.CQRS/Discovery/QueryDiscovery.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Svrnty.CQRS.Abstractions.Discovery;

Svrnty.CQRS/Svrnty.CQRS.csproj

@@ -26,6 +26,10 @@
     <None Include="..\README.md" Pack="true" PackagePath="" CopyToOutputDirectory="Always" />
   </ItemGroup>
 
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Svrnty.CQRS.Abstractions\Svrnty.CQRS.Abstractions.csproj" />
   </ItemGroup>

Svrnty.CQRS/WebApplicationExtensions.cs

@@ -2,7 +2,7 @@ using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.DependencyInjection;
 using Svrnty.CQRS.Configuration;
 
-namespace Svrnty.CQRS.MinimalApi;
+namespace Svrnty.CQRS;
 
 public static class WebApplicationExtensions
 {

Svrnty.Sample/Program.cs

@@ -1,11 +1,11 @@
 using Microsoft.AspNetCore.Server.Kestrel.Core;
 using Svrnty.CQRS;
+using Svrnty.CQRS.Abstractions;
+using Svrnty.CQRS.DynamicQuery;
 using Svrnty.CQRS.FluentValidation;
 using Svrnty.CQRS.Grpc;
-using Svrnty.Sample;
 using Svrnty.CQRS.MinimalApi;
-using Svrnty.CQRS.DynamicQuery;
-using Svrnty.CQRS.Abstractions;
+using Svrnty.Sample;
 
 var builder = WebApplication.CreateBuilder(args);
 

Svrnty.Sample/SimpleAsyncQueryableService.cs

@@ -1,5 +1,5 @@
-using PoweredSoft.Data.Core;
 using System.Linq.Expressions;
+using PoweredSoft.Data.Core;
 
 namespace Svrnty.Sample;