feat: finalize core modules and gateway

src/Application/TakeoutSaaS.Application/Messaging/Services/EventPublisher.cs

@@ -0,0 +1,16 @@
+using System.Threading;
+using System.Threading.Tasks;
+using TakeoutSaaS.Application.Messaging.Abstractions;
+using TakeoutSaaS.Module.Messaging.Abstractions;
+
+namespace TakeoutSaaS.Application.Messaging.Services;
+
+/// <summary>
+/// 事件发布适配器，封装应用层到 MQ 的发布。
+/// </summary>
+public sealed class EventPublisher(IMessagePublisher messagePublisher) : IEventPublisher
+{
+    /// <inheritdoc />
+    public Task PublishAsync<TEvent>(string routingKey, TEvent @event, CancellationToken cancellationToken = default)
+        => messagePublisher.PublishAsync(routingKey, @event, cancellationToken);
+}