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What this surface does
This is the nested participant leaderboard shown inside tournament activity detail and preview pages.
Operators use it to inspect rank order, identify failed coupon delivery, and trigger corrective actions without leaving the activity screen.
Common caveats
- The participant list is loaded together with the activity detail request, not from a separate admin page.
Resend All Failedis available only when coupon-based prizes produced failed assignment states.RecalculateandRecalculate V2target the whole tournament instance, not one participant row.