wip: skipass-duration based rentals filtering

docs/SYSTEM_STATUS_2025.md

@@ -34,6 +34,8 @@
 - **Rental Insurance**: Checkbox interface with conditional visibility ✅
 - **Body Dimensions**: Hidden unless rental services selected ✅
 - **Additional Services**: Flexible service extension system ✅
+- **Service Descriptions**: XML-based service descriptions with form integration ✅
+- **License Plate Field**: Optional vehicle identification field for parking participants ✅
 
 #### Pricing & Display System
 - **Inline Pricing**: Service costs in form options ✅
@@ -77,6 +79,8 @@
 | **Conditional Fields** | ✅ | ✅ | ✅ | ✅ | ✅ |
 | **HTMX Integration** | ✅ | ✅ | ✅ | ✅ | ✅ |
 | **BPN API Integration** | ✅ | ✅ | ✅ | ✅ | ✅ |
+| **Service Descriptions** | ✅ | ✅ | ✅ | ✅ | ✅ |
+| **License Plate Field** | ✅ | ✅ | ✅ | ✅ | ✅ |
 | **Age-Based Constraints** | ✅ | 🔄 | ⏳ | ✅ | ⏳ |
 | **Advanced Pricing** | ✅ | ⏳ | ⏳ | 🔄 | ⏳ |
 | **Mobile Optimization** | ✅ | ⏳ | ⏳ | ⏳ | ⏳ |
@@ -132,6 +136,8 @@
 ├── ParticipantAssignedRoomFieldHandler               # Room assignments
 ├── ParticipantDateOfBirthFieldHandler                # Age processing
 ├── ParticipantRemarksRoomFieldHandler                # Special requests
+├── ParticipantRentalInsuranceFieldHandler             # Rental insurance checkbox
+├── ParticipantLicensePlateFieldHandler                # Vehicle license plate input
 └── [Custom handlers easily extensible]
 ```