fix(demand): apply resolved model to run config

examples/demand/run.py

@@ -757,6 +757,7 @@ async def run_once(
 
     run_config = copy.deepcopy(RUN_CONFIG)
     model = resolve_model(prompt, run_config)
+    run_config.model = model
     run_config.temperature = float(prompt.config.get("temperature", run_config.temperature))
     run_config.max_iterations = int(prompt.config.get("max_iterations", run_config.max_iterations))
     run_config.tools = enabled_tools