Shadow only: current production Top4 is not replaced until A/B gates pass.
| row_type | scenario | metric | value | sample_count | note |
|---|---|---|---|---|---|
| summary | old | score_top4_hit_rate | 样本不足，仅作观察 | 0 | current production score Top4 |
| summary | score_total_blend_shadow | score_top4_hit_rate | 样本不足，仅作观察 | 0 | shadow available 0/0; not applied to final score |
| summary | score_total_blend_shadow | status | waiting_for_finished_samples | 0 | No finished matches with score labels yet |