Update app.py

app.py

@@ -133,7 +133,7 @@ class ChatService:
                 found_models.append(model)
         
         new_specs_advantages = {}
-        if found_models:  # FIX: Changed from != [] to truthy check
+        if found_models != []: 
             for prod_id, data in specs_map.items():
                 if data.get("model", None) in found_models:
                     new_specs_advantages[prod_id] = data