- Fix property enumeration to dedupe overridden/shadowed properties, ensuring only the most-derived is included (affects serialization and schema).
- Update TOON_ISSUES.md: close duplicate property issue, document root cause and resolution.
- Make CargoPartnerId nullable in Shipping and IShipping; clarify ToonDescription for carrier/truck/trailer fields.
- Refine ShippingDocument ToonDescription for clarity.
- Minor null-safety and style cleanup in GridShipping.razor.
Introduced CargoPartner and CargoTruck entities for logistics, updated Shipping and IShipping to link to carrier and vehicles, and enhanced UI grids for selection and validation. Updated documentation and glossary to reflect new logistics model and terminology. Removed obsolete Shippings navigation from CargoPartner.
Loretta