Correct inconsistency in core execution loop

Author: btomaj

attractor-spec.md

@@ -1959,7 +1959,7 @@ ASSERT no error-severity results in lint_results
 
 -- 3. Execute with LLM callback
 context = Context()
-outcome = run_pipeline(graph, context, llm_callback = real_llm_callback)
+outcome = run(graph, context)
 
 -- 4. Verify
 ASSERT outcome.status == "success"