feat(scada): add project monitoring replay

app/api/v1/endpoints/operational_tasks.py

@@ -567,10 +567,24 @@ async def query_operational_task_data(
         if not await service.can_read_source(task_id, query.source):
             raise DomainError("PERMISSION_DENIED", "Task has no approved access to this data source", status=403)
         source_permission = SCADA_VIEW if query.source.startswith("scada_") else SIMULATION_VIEW
-        snapshot = await read_task_data(
-            context=ctx, query=query, credential=authorization,
-            delegated=source_permission not in _task_permissions(ctx),
-        )
+        from app.services.scada_replay_queries import replay_snapshot_rows
+        replay_context = await service.replay_context(task_id)
+        if replay_context:
+            if query.source != "scada_readings":
+                raise HTTPException(403, "回放调查数据接口仅开放本轮 SCADA 快照，请通过 MCP 查询设备目录")
+            rows = await replay_snapshot_rows(conn, ctx.project_id, replay_context, query.device_ids,
+                                              query.start, query.end, 1001)
+            from app.services.content_digest import digest
+            from datetime import datetime, timezone
+            snapshot = TaskDataSnapshot(
+                source="scada_readings", source_ref=f"scada_replay:{replay_context['replay_id']}:{digest(rows)}",
+                queried_at=datetime.now(timezone.utc), origin="synthetic", data=rows[:1000], truncated=len(rows) > 1000,
+            )
+        else:
+            snapshot = await read_task_data(
+                context=ctx, query=query, credential=authorization,
+                delegated=source_permission not in _task_permissions(ctx),
+            )
         evidence, stored_snapshot = await service.record_data_snapshot(task_id, snapshot)
         return TaskDataQueryResult(evidence=evidence, snapshot=stored_snapshot)
     except TaskDataError as exc: