feat(scada): add calibrated monitoring and incident recovery

scripts/sync_peripheral_work_orders.py

@@ -215,14 +215,17 @@ async def sync_once(client: httpx.AsyncClient, settings: WorkerSettings, periphe
             evidence_summary = order["summary"]
             if notes:
                 evidence_summary += "\n现场反馈：\n" + "\n".join(notes[-10:])
+            field_times = [activity["occurred_at"] for activity in order.get("activity", [])
+                           if activity.get("kind") == "feedback" and activity.get("occurred_at")]
+            feedback_time = field_times[-1] if order["status"] == "completed" and field_times else order["updated_at"]
             feedback = {
                 "request_id": str(uuid5(NAMESPACE_URL, event_id)), "source_event_id": external_id,
                 "source_revision": order["revision"], "status": STATUS[order["status"]],
-                "occurred_at": order["updated_at"],
+                "occurred_at": feedback_time,
                 "detail": f"{source_label} {order['work_order_id']}：{order['status']}",
                 "evidence": {"evidence_id": event_id, "kind": "external_feedback", "summary": evidence_summary,
                              "source_label": source_label, "source_ref": external_id,
-                             "observed_at": order["updated_at"]},
+                             "observed_at": feedback_time},
             }
             # A child order's creation is already represented by its dispatch
             # receipt. Only a subsequent source revision is new field input.