refactor(infrastructure): Reorganize routing and messaging architecture with middleware support

src/Infrastructure/Messaging/CommandBus.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace DistributingCarriers\Infrastructure\Messaging;
+
+class CommandBus
+{
+    private $handlers = [];
+
+    public function register(string $commandClass, callable $handler): void
+    {
+        $this->handlers[$commandClass] = $handler;
+    }
+
+    public function dispatch(object $command): void
+    {
+        $commandClass = \get_class($command);
+        if (!isset($this->handlers[$commandClass])) {
+            throw new \Exception("No handler registered for command: $commandClass");
+        }
+
+        $handler = $this->handlers[$commandClass];
+        $handler($command);
+    }
+}