- Add AddressSnapshot and CustomerSnapshot schemas
- Update OrderItemResponse with gtin fields and item_state
- Update OrderResponse with all snapshot fields
- Add OrderListItem for simplified list views
- Add Letzshop-specific schemas (LetzshopOrderImport, LetzshopShippingInfo)
- Update AdminOrderItem with new fields
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>