feat(plugins): add source-aware evidence and recording timelines

artemis/data_engine/engine.py

@@ -1488,6 +1488,8 @@ class DataEngine:
             "post_image_name": post_image_name,
             "generic_tools": self._get_generic_tools_for_sse(step_id),
         }
+        if last_execution_result.get("pre_image_valid") is False:
+            payload["pre_image_name"] = None
         if step_num is not None:
             payload["step_number"] = step_num
         self._publish("step_updated", payload)