246e4038b4
RED phase: 20 test cases for: - WorkflowState.is_step_completed (5 tests) - WorkflowState.mark_step_* methods (4 tests) - WorkflowStateManager atomic write (4 tests) - WorkflowStateManager backup fallback (4 tests) - WorkflowStateManager.get_or_create (3 tests) 11 tests fail due to missing kb_pipeline.state module. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>