Stock Release Channel Batch Mode Commercial Partner

This module extends the Stock Release Channel feature by adding a new choice in the channel's batch mode setting called "Grouped by Commercial Entiry". When this mode is selected on a release channel, the system changes how pickings are selected for release: instead of releasing pickings one by one or in another order, it looks at the first picking waiting to be released, identifies its commercial entity (the parent company or commercial partner), and then gathers all other waiting pickings that belong to that same commercial entity.

• The new option appears in the batch mode field on the stock release channel form.
• The selection is added to the existing list of batch modes, so users can choose it alongside other modes.
• When the channel runs its release process, it uses the new grouping logic to decide which pickings to release together.
• The grouping is based on the commercial partner of the pickings, which is typically the company or entity that groups several contacts or addresses.
• This ensures that all deliveries for the same commercial entity are processed at the same time, which is useful when they share the same carrier or delivery location.

The module only touches the stock.release.channel model and does not add new menus or screens. It relies on the stock_picking_commercial_partner module to provide the commercial partner information on pickings.