Annotate DP banana handoff rounds 1 and 2 as failures

Apply the dataset owner instruction to mark previously unlabelled rounds 1 and 2 as failures. Update task_success, operator_result, and review timestamp only. Preserve execution status and all other rounds. Labels supplied by the user; no new video adjudication performed by the assistant.

eval/YAM/V2/dp/banana_handoff/metadata/rounds.json

@@ -4,23 +4,23 @@
       "actions_sent": 320,
       "chunks": 10,
       "data_saved": true,
-      "operator_result": null,
+      "operator_result": "failure",
       "output_dir": "/home/romoya-1/openpi-workspace/PrometheusV2/outputs/yam_v2/dp/best-short/banana_handoff/data/round_0001",
-      "reviewed_at_ns": null,
+      "reviewed_at_ns": 1790074255478939318,
       "round_number": 1,
       "status": "completed",
-      "task_success": null
+      "task_success": false
     },
     {
       "actions_sent": 960,
       "chunks": 30,
       "data_saved": true,
-      "operator_result": null,
+      "operator_result": "failure",
       "output_dir": "/home/romoya-1/openpi-workspace/PrometheusV2/outputs/yam_v2/dp/best-short/banana_handoff/data/round_0002",
-      "reviewed_at_ns": null,
+      "reviewed_at_ns": 1790074255478939318,
       "round_number": 2,
       "status": "completed",
-      "task_success": null
+      "task_success": false
     },
     {
       "actions_sent": 902,