Companion inventory editor for real-time quantity, weight, dimension, and shelf-location
overrides. Opened from pickPackVerifyOrders.php (popup with
?product_id=) or directly from the Inventory menu. Compare OpenCart catalog
data against verified warehouse values, then submit corrections to oc_product
including primary location and overstock location fields.
SetShelfQuantity() and write to pd_product_log; weight, dimensions, location, and overstock fields update oc_product directly.