added phi4

src/backend/model_operations.py

@@ -164,7 +164,7 @@ class SummaryGenerator:
         using_replicate_api = False
         replicate_api_models = ['snowflake', 'llama-3.1-405b']
         using_pipeline = False
-        pipeline_models = ['llama-3.1', 'phi-3-mini','falcon-7b', 'phi-3.5', 'mistral-nemo', 'llama-3.3']
+        pipeline_models = ['llama-3.1', 'phi-3-mini','falcon-7b', 'phi-3.5', 'mistral-nemo', 'llama-3.3', 'phi-4']
 
         for replicate_api_model in replicate_api_models:
             if replicate_api_model in self.model_id.lower():