- Add BAN_PAGE_SIZE (100) and HISTORY_PAGE_SIZE (50) to frontend/src/utils/constants.ts - Replace local PAGE_SIZE definitions in useBans.ts and HistoryPage.tsx with imports - Eliminates risk of pagination constants silently diverging from backend defaults - Single source of truth for all pagination sizes Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>