require provider and model, use temperature=1 and big tockens num for all gpt-5 models

agent.py

@@ -9,11 +9,11 @@ import prompts
 class BIDSifierAgent:
 	"""Wrapper around OpenAI chat API for step-wise BIDSification."""
 
-	def __init__(self, *, provider: Optional[str] = None, model: Optional[str] = None, openai_api_key: Optional[str] = None, temperature: float = 0.2):
+	def __init__(self, *, provider: str, model: str, openai_api_key: Optional[str] = None, temperature: float = 0.2):
 		load_dotenv()
 		
 		if provider=="openai":
-			if model == "gpt-5": #reasoning model that requires special handling
+			if model.startswith("gpt-5"): #reasoning model that requires special handling
 				temperature = 1.0
 				lm = dspy.LM(f"{provider}/{model}", api_key=openai_api_key or os.getenv("OPENAI_API_KEY"), temperature = temperature, max_tokens = 40000)
 			else: