perf: reduce chained array traversal

src/features/script-tokens/ScriptTokensPage.tsx

@@ -245,9 +245,21 @@ function getDimensionSubScores(result: EvalResult, dim: ScoreDimension): Array<[
     .slice(0, 5);
 }
 
+function normalizeEvidenceItems(evidence: unknown[] | undefined, limit: number): string[] {
+  if (!Array.isArray(evidence)) return [];
+  const items: string[] = [];
+  for (const item of evidence) {
+    const value = String(item).trim();
+    if (!value) continue;
+    items.push(value);
+    if (items.length >= limit) break;
+  }
+  return items;
+}
+
 function getDimensionEvidence(result: EvalResult, dim: ScoreDimension): string[] {
   const evidence = result.evidence?.[dim.key] ?? (dim.key === "logic" ? result.evidence?.dialogue : undefined);
-  return Array.isArray(evidence) ? evidence.map(String).map((item) => item.trim()).filter(Boolean).slice(0, 3) : [];
+  return normalizeEvidenceItems(evidence, 3);
 }
 
 function formatReportMarkdown(result: EvalResult, script: string): string {