Product filters that scale to dozens of attributes

The search-and-filter bar on the product list is built for catalogs with dozens of filterable attributes: search fields by name, browse them in groups — Main, Data quality, Attributes — and see how many products match each value before you pick it. Active filters show as clear two-part pills, with the total number of results right next to the bar.

The table header stays pinned while you scroll the page, and the filter bar comes back as soon as you scroll up. Fixed along the way: “is not” filters now exclude what they should, and filters on multi-select attributes return the right products.