- FullName split into FirstName + LastName in both forms and API
- File fields renamed: FrontIdCarImage -> FrontIdCarImagePath, RearIdCarImage -> RearIdCarImagePath
- Added Language field to form data
- getRentProperty now uses /RentProperties/GetRentPropertyById/{id}
- addCustomer/addOwner now use FormData with multipart upload
- Front and back ID images appended as FrontIdCarImage/RearIdCarImage
- Registration pages pass idImages.front and idImages.back to API
- Field names mapped to PascalCase for .NET API (FullName, Email, etc.)