Remove redundant .slice() before .sort() in renderList

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

static/script.js

@@ -1526,7 +1526,8 @@ function renderList() {
     p.character_name.toLowerCase().startsWith(currentFilter)
   );
   // Sort filtered list
-  const sorted = filtered.slice().sort(currentSort.comparator);
+  filtered.sort(currentSort.comparator);
+  const sorted = filtered;
   render(sorted);
 }