- Created WithSorting trait (shared across all 35 list components)
- Created <x-ui.sort-header> Blade component with arrow indicators
- All table lists now support click-to-sort on key columns (persisted via URL)
- Trainer edit form: added salary amount + frequency fields from Employee model
- Trainer edit form: person data (name, national_id, phone) already included
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>