=== Filter Functionality Test ===

1. retrait_index() function filters:
   - client: Searches in user first_name and last_name
   - number: Searches in numero and compte_bancaire
   - moyen_paiement: Filters by payment method
   - date_emis_from/to: Filters by creation date range
   - date_validation_from/to: Filters by validation date range

2. list_retrait_user() function filters:
   - motif: Searches in withdrawal reason
   - number: Searches in numero and compte_bancaire
   - moyen_paiement: Filters by payment method
   - date_emis_from/to: Filters by creation date range
   - date_validation_from/to: Filters by validation date range

Example filter URLs:
Admin: /retrait-admin?client=John&moyen_paiement=mobile_money&date_emis_from=2024-01-01
User: /retrait?motif=salary&number=123456&date_validation_from=2024-01-01

Both functions now:
✓ Accept Request parameter
✓ Apply filters using Laravel query builder
✓ Maintain pagination with filters
✓ Use appends() to preserve filter parameters in pagination links
✓ Handle empty/null filter values gracefully

Filter implementation complete!