- Add utils/export.ts for centralized CSV export functionality
- Add EmptyState component for consistent empty state UI
- Add Pagination component for reusable pagination controls
- Refactor employe/gains-client to use apiFetch and EmptyState
- Refactor employe/historique to use apiFetch and EmptyState
- Export new components from ui/index.ts
Target: reduce duplication from 13.93% to under 3%
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Co-Authored-By: Claude <noreply@anthropic.com>
