[AiBundle] Set agent name from configuration key

Ensure agents have their name properly set from the configuration key.
The Agent constructor's name parameter (argument 4) and the ai.agent
tag both use the configuration key as the agent name.

This allows Agent.getName() to return the configuration key and enables
proper service discovery through tagged locators (e.g., ChatCommand).

Author: OskarStark

src/ai-bundle/src/AiBundle.php

@@ -600,7 +600,8 @@ private function processAgentConfig(string $name, array $config, ContainerBuilde
         $agentDefinition
             ->setArgument(2, []) // placeholder until ProcessorCompilerPass process.
             ->setArgument(3, []) // placeholder until ProcessorCompilerPass process.
-            ->setArgument(4, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))
+            ->setArgument(4, $name)
+            ->setArgument(5, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))
         ;
 
         $container->setDefinition($agentId, $agentDefinition);

src/ai-bundle/tests/DependencyInjection/AiBundleTest.php

@@ -108,6 +108,33 @@ public function testAgentHasTag()
         $this->assertArrayHasKey('ai.agent.my_agent', $container->findTaggedServiceIds('ai.agent'));
     }
 
+    public function testAgentNameIsSetFromConfigKey()
+    {
+        $container = $this->buildContainer([
+            'ai' => [
+                'agent' => [
+                    'my_custom_agent' => [
+                        'model' => ['class' => 'Symfony\AI\Platform\Bridge\OpenAi\Gpt'],
+                    ],
+                ],
+            ],
+        ]);
+
+        $this->assertTrue($container->hasDefinition('ai.agent.my_custom_agent'));
+
+        $agentDefinition = $container->getDefinition('ai.agent.my_custom_agent');
+        $arguments = $agentDefinition->getArguments();
+
+        // The 5th argument (index 4) should be the config key as agent name
+        $this->assertArrayHasKey(4, $arguments, 'Agent definition should have argument at index 4 for name');
+        $this->assertSame('my_custom_agent', $arguments[4]);
+
+        // Check that the tag uses the config key as name
+        $tags = $agentDefinition->getTag('ai.agent');
+        $this->assertNotEmpty($tags, 'Agent should have ai.agent tag');
+        $this->assertSame('my_custom_agent', $tags[0]['name'], 'Agent tag should use config key as name');
+    }
+
     #[TestWith([true], 'enabled')]
     #[TestWith([false], 'disabled')]
     public function testFaultTolerantAgentSpecificToolbox(bool $enabled)