bug #207 [Agent] Keep the rawResponse and metadata when parsing structured output (Renrhaf)

This PR was squashed before being merged into the main branch.

Discussion
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[Agent] Keep the rawResponse and metadata when parsing structured output

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        | Fix #206
| License       | MIT

Keep the rawResponse and metadata when parsing structured output

Commits
-------

1820a34 [Agent] Keep the rawResponse and metadata when parsing structured output

Author: chr-hertel

src/agent/src/StructuredOutput/AgentProcessor.php

@@ -91,8 +91,17 @@ public function processOutput(Output $output): void
             return;
         }
 
+        $originalResult = $output->result;
         $output->result = new ObjectResult(
             $this->serializer->deserialize($output->result->getContent(), $this->outputStructure, 'json')
         );
+
+        if ($originalResult->getMetadata()->count() > 0) {
+            $output->result->getMetadata()->set($originalResult->getMetadata()->all());
+        }
+
+        if (!empty($originalResult->getRawResult())) {
+            $output->result->setRawResult($originalResult->getRawResult());
+        }
     }
 }

src/agent/tests/StructuredOutput/AgentProcessorTest.php

@@ -26,6 +26,7 @@
 use Symfony\AI\Platform\Message\MessageBag;
 use Symfony\AI\Platform\Model;
 use Symfony\AI\Platform\Result\Choice;
+use Symfony\AI\Platform\Result\Metadata\Metadata;
 use Symfony\AI\Platform\Result\ObjectResult;
 use Symfony\AI\Platform\Result\TextResult;
 use Symfony\Component\Serializer\SerializerInterface;
@@ -98,6 +99,8 @@ public function processOutputWithResponseFormat(): void
 
         $this->assertInstanceOf(ObjectResult::class, $output->result);
         $this->assertInstanceOf(SomeStructure::class, $output->result->getContent());
+        $this->assertInstanceOf(Metadata::class, $output->result->getMetadata());
+        $this->assertNull($output->result->getRawResult());
         $this->assertSame('data', $output->result->getContent()->some);
     }
 
@@ -145,6 +148,8 @@ public function processOutputWithComplexResponseFormat(): void
 
         $this->assertInstanceOf(ObjectResult::class, $output->result);
         $this->assertInstanceOf(MathReasoning::class, $structure = $output->result->getContent());
+        $this->assertInstanceOf(Metadata::class, $output->result->getMetadata());
+        $this->assertNull($output->result->getRawResult());
         $this->assertCount(5, $structure->steps);
         $this->assertInstanceOf(Step::class, $structure->steps[0]);
         $this->assertInstanceOf(Step::class, $structure->steps[1]);