This module extends ``res.partner`` (suppliers) with a default price category field and allows bulk updating all products from a supplier with this category through a wizard.

**Key Features:**

* **Supplier Default Category**: Add ``default_price_category_id`` field to supplier form in Purchases tab
* **Bulk Update**: Button opens modal wizard to confirm updating all supplier's products
* **Configurable Column**: Field hidden in tree view by default, visible/configurable from column menu
* **Access Control**: Restricted to Sales Managers (``sales_team.group_sale_manager``)
* **Integration**: Works seamlessly with ``product_price_category`` and pricelist system
