Stock Quant Expiration Date Tree

This module makes expiry information visible where stock quantities are listed. It adds three date columns to the stock quant list views: expiration date, use date and alert date. These dates come from the lot or serial number linked to the quant, so they update automatically when the lot information changes.

The new columns appear in two inventory screens: the editable stock quant list and the inventory adjustment list. They are added after the unit of measure column and are hidden by default, so users can turn them on from the optional columns menu when needed.

No new menus, buttons, reports, checks or scheduled actions are added. The module only extends the stock.quant model with three related date fields and inherits the existing stock quant tree views. It depends on the Inventory and Product Expiry apps, so it only makes sense when lots and expiry dates are already used.