Refactor response handling to parse JSON content.

Replace raw response text retrieval with JSON parsing to extract specific content. This ensures more precise data handling and aligns with expected response structure.

src/phoenix_technologies/smd/server.py

@@ -49,7 +49,8 @@ async def summarize_to_words(text: str, title: str, target_word_count: int = 100
     async with aiohttp.ClientSession() as session:
         async with session.post(url, headers=headers, json=payload) as response:
             if response.status == 200:
-                return await response.text()
+                data = await response.json()
+                return data.get("choices")[0].get("message").get("content")
             else:
                 return await response.text()