[Platform][ElevenLabs] Use capability-based speech-to-text detection

Replace hardcoded model name checking with API capability detection
for speech-to-text models. This makes the code more maintainable and
allows for dynamic capability discovery.

Author: OskarStark

src/platform/src/Bridge/ElevenLabs/ElevenLabsClient.php

@@ -41,12 +41,12 @@ public function request(Model $model, array|string $payload, array $options = []
             throw new InvalidArgumentException(\sprintf('The payload must be an array, received "%s".', get_debug_type($payload)));
         }
 
-        if (\in_array($model->getName(), [ElevenLabs::SCRIBE_V1, ElevenLabs::SCRIBE_V1_EXPERIMENTAL], true)) {
+        $capabilities = $this->retrieveCapabilities($model);
+
+        if ($capabilities['can_do_speech_to_text'] ?? false) {
             return $this->doSpeechToTextRequest($model, $payload);
         }
 
-        $capabilities = $this->retrieveCapabilities($model);
-
         if (!$capabilities['can_do_text_to_speech']) {
             throw new InvalidArgumentException(\sprintf('The model "%s" does not support text-to-speech.', $model->getName()));
         }

src/platform/tests/Bridge/ElevenLabs/ElevenLabsClientTest.php

@@ -81,6 +81,12 @@ public function testClientCannotPerformSpeechToTextRequestWithInvalidPayload()
     public function testClientCanPerformSpeechToTextRequest()
     {
         $httpClient = new MockHttpClient([
+            new JsonMockResponse([
+                [
+                    'model_id' => ElevenLabs::SCRIBE_V1,
+                    'can_do_speech_to_text' => true,
+                ],
+            ]),
             new JsonMockResponse([
                 'text' => 'foo',
             ]),
@@ -89,15 +95,43 @@ public function testClientCanPerformSpeechToTextRequest()
 
         $client = new ElevenLabsClient(
             $httpClient,
-            'https://api.elevenlabs.io/v1',
             'my-api-key',
+            'https://api.elevenlabs.io/v1',
         );
 
         $payload = $normalizer->normalize(Audio::fromFile(\dirname(__DIR__, 5).'/fixtures/audio.mp3'));
 
         $client->request(new ElevenLabs(ElevenLabs::SCRIBE_V1), $payload);
 
-        $this->assertSame(1, $httpClient->getRequestsCount());
+        $this->assertSame(2, $httpClient->getRequestsCount());
+    }
+
+    public function testClientCanPerformSpeechToTextRequestWithExperimentalModel()
+    {
+        $httpClient = new MockHttpClient([
+            new JsonMockResponse([
+                [
+                    'model_id' => ElevenLabs::SCRIBE_V1_EXPERIMENTAL,
+                    'can_do_speech_to_text' => true,
+                ],
+            ]),
+            new JsonMockResponse([
+                'text' => 'foo',
+            ]),
+        ]);
+        $normalizer = new AudioNormalizer();
+
+        $client = new ElevenLabsClient(
+            $httpClient,
+            'my-api-key',
+            'https://api.elevenlabs.io/v1',
+        );
+
+        $payload = $normalizer->normalize(Audio::fromFile(\dirname(__DIR__, 5).'/fixtures/audio.mp3'));
+
+        $client->request(new ElevenLabs(ElevenLabs::SCRIBE_V1_EXPERIMENTAL), $payload);
+
+        $this->assertSame(2, $httpClient->getRequestsCount());
     }
 
     public function testClientCannotPerformTextToSpeechRequestWithoutValidPayload()