Implement additional address and identification fields for both sender
and receiver across the WordPress plugin and Laravel API. This includes
state, postal code, and national ID/passport information.
Key changes:
- Added database migration to include postal and national ID fields in
the shipments table.
- Updated WordPress order form shortcodes and JavaScript to capture
new address fields.
- Refactored Laravel `CustomerOrderController` validation and storage
to support expanded shipment data.
- Implemented tiered data visibility in `TrackController` to protect
PII, providing masked data to anonymous users and full data to
owners/admins.
- Fixed weight-based rate lookup logic in `PriceCalculatorService` to
correctly select the appropriate shipping tier.
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