feat: poll evaluation scores every 30s and re-sort live

The ranking dashboard now refetches roundEvaluationScores every 30
seconds. When a juror submits a new evaluation, the next refetch
updates the raw and balanced averages, and the existing re-sort
effect (now also keyed on snapshot + evalScores, not just the toggle)
re-orders the list in place. Manual reorders persisted on the
snapshot still take precedence — admins who have dragged rows aren't
overruled by score updates.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/admin/round/ranking-dashboard.tsx

@@ -310,6 +310,7 @@ export function RankingDashboard({ competitionId: _competitionId, roundId }: Ran
 
   const { data: evalScores } = trpc.ranking.roundEvaluationScores.useQuery(
     { roundId },
+    { refetchInterval: 30_000 },
   )
 
   const { data: evalForm } = trpc.evaluation.getStageForm.useQuery(
@@ -464,9 +465,12 @@ export function RankingDashboard({ competitionId: _competitionId, roundId }: Ran
     }
   }, [snapshot, evalScores])
 
-  // ─── Re-sort on toggle flip (after init) ─────────────────────────────────
+  // ─── Re-sort when toggle flips OR scores refetch (after init) ────────────
   // Only resorts when no server-side manual reorder is pinned for the snapshot;
   // persisted manual reorders always win regardless of the score being used.
+  // The 30-second polling on roundEvaluationScores feeds this effect — when a
+  // juror submits a new evaluation, the next refetch picks it up, balanced/raw
+  // averages update, and the list re-sorts in place.
   useEffect(() => {
     if (!initialized.current || !snapshot || !evalScores) return
     const reorders = (snapshot.reordersJson as Array<{
@@ -502,10 +506,7 @@ export function RankingDashboard({ competitionId: _competitionId, roundId }: Ran
       STARTUP: sortedStartup.map((r) => r.projectId),
       BUSINESS_CONCEPT: sortedConcept.map((r) => r.projectId),
     })
-    // Eslint disable: snapshot/evalScores are read but the resort should only
-    // run on toggle flip, not on every snapshot/scores refetch.
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [useBalanced])
+  }, [useBalanced, evalScores, snapshot])
 
   // ─── numericCriteria from eval form ─────────────────────────────────────
   const numericCriteria = useMemo(() => {