POS Category Vertical Display

This module changes how the Point of Sale screen looks. Instead of the usual horizontal row of product categories, the categories are shown in a vertical, scrollable area, so more categories can be seen and reached without horizontal scrolling.

• The category buttons appear one after another vertically, each with an optional image, an optional icon and the category name.
• A search box for products is placed next to the category list, so cashiers can search products while browsing categories.
• The category area scrolls vertically when there are many categories, and the product search field stays visible.
• Category images are shown when the POS is configured to display category images.

It only affects the Point of Sale interface; no new menus, models, business rules, checks or automatic actions are added. It works together with the standard point_of_sale module and does not change any data or accounting behaviour.