feature #512 [AI Bundle][AiBundle] Set agent name from configuration key (OskarStark)

This PR was merged into the main branch.

Discussion
----------

[AI Bundle][AiBundle] Set agent name from configuration key

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Docs?         | no
| Issues        | Follows #509
| License       | MIT

Commits
-------

8622ef2 [AiBundle] Set agent name from configuration key

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)