fix: genai narration using a more recent openai package version

backend/ai_service.py

@@ -13,7 +13,7 @@ class AIService:
     """Service for AI-generated game content."""
 
     def __init__(self):
-        self.enabled = settings.USE_OPENAI and settings.OPENAI_API_KEY
+        self.enabled = settings.USE_OPENAI and bool(settings.OPENAI_API_KEY)
         self.client = None
 
         if self.enabled:

backend/requirements.txt

@@ -1,5 +1,7 @@
-fastapi==0.104.1
-uvicorn[standard]==0.24.0
-pydantic==2.5.0
-python-multipart==0.0.6
-openai==1.3.0
+fastapi>=0.115.2
+uvicorn[standard]>=0.24.0
+pydantic>=2.5.0
+python-multipart>=0.0.18
+openai>=1.54.0
+python-dotenv>=1.0.0
+starlette>=0.40.0