Fix alpha generation pipeline runnable-output blockers

alpha_factory/deterministic/proven_templates.py

@@ -195,7 +195,7 @@ def generate_batch_from_proven_templates(count: int = 5, decay: int = 5) -> list
         template_name, template_fn = templates[i % len(templates)]
         group_key = get_group_for_expression(prefer_novel=True)
         
-        expr = template_fn(field, group_key, decay)
+        expr = template_fn(field, group_key=group_key, decay=decay)
         
         results.append({
             "expression": expr,