Smarter Address Handling for Label Generation

When generating carton and pallet labels, Orderful now automatically sources Ship From and Ship To addresses so you don't have to re-enter them every time.

What's new:

Ship To: If no Ship To address is present on the 856, Orderful now falls back in this order:

1. If the 856 was created from a split, use the DC or store address from the receiver's org hierarchy
2. Pull the address from the linked 850 Purchase Order
3. If neither applies, you'll be prompted to select a saved Ship To party

Ship From: If no Ship From address is present on the 856, you can select or create a saved party — and Orderful will remember it for future label batches on the same relationship.

This update eliminates repetitive manual address entry and reduces the risk of errors when generating label batches.