Enable the packaging page and map operators to a Packaging station

Publish the work order and map each operator to a tracking station of type Packaging so the page is active.

1. The page itself is disabled unless the work order is published AND the user is mapped to a tracking station of type Packaging.

2. An unmapped operator sees an empty state, so map them to a Packaging station in Settings > Tracking Stations.

3. Packaging station access is granted independently of shipment access: a user can be mapped to a Packaging station without being mapped to any Shipment station, and vice versa.