This update improves how inventory value is calculated for lot-tracked products, backdated stock movements, subcontracting quantities, and manufacturing labor costs. It helps businesses get more reliable stock valuation reports and clearer accounting labels, reducing the risk of misleading inventory or cost figures.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr