A good category structure is one of the main prerequisites for a usable e-shop — customers must be able to orient themselves within it in a few seconds and at the same time be able to filter the offer purposefully. The `/product-category` module therefore serves to organize the catalog into a meaningful taxonomy, in which categories can be arranged into a **hierarchical tree** (parent and child), assign products their categorization, and set properties affecting display on the web as well as export to product comparison engines. Because the catalog changes and grows over time, the module is built to handle large structures and ch...