fix(container): ensure last registration wins and simplify spec path resolution

Author: Fahl-Design

config/routes.php

@@ -12,7 +12,7 @@
 
 return static function (Application $application, MiddlewareFactory $middlewareFactory): void {
     $specPath    = getenv('OPENAPI_SPEC') ?: null;
-    $packageRoot = dirname(__DIR__) ?: '/app';
+    $packageRoot = dirname(__DIR__);
 
     if (null === $specPath) {
         $specPath = $packageRoot . '/data/openapi.yaml';

src/Container/SimpleContainer.php

@@ -159,22 +159,25 @@ public function configure(array $config): void
 
     public function setService(string $name, mixed $service): void
     {
+        unset($this->aliases[$name], $this->factories[$name]);
         $this->services[$name] = $service;
     }
 
     public function setFactory(string $name, callable|string $factory): void
     {
+        unset($this->aliases[$name], $this->services[$name]);
         $this->factories[$name] = $factory;
     }
 
     public function setAlias(string $alias, string $target): void
     {
+        unset($this->services[$alias], $this->factories[$alias]);
         $this->aliases[$alias] = $target;
     }
 
     public function setInvokableClass(string $name, string $class): void
     {
-        $this->factories[$name] = static fn (): object => new $class();
+        $this->setFactory($name, static fn (): object => new $class());
     }
 
     private function resolveAlias(string $id, bool $throwOnCircular = true): ?string