[IMP] website_sale_aplicoop: skip the product-card tags row when unused

The tags row was reserved (empty, aria-hidden) on every product card so
prices stay aligned across a grid row regardless of which cards have tags.
But when no product in the current batch has a published tag, that row was
still a fixed, permanent gap on every card for a feature nobody was using.

any_product_has_tags is now computed once per batch (controller-side, per
CLAUDE.md's no-logic-in-QWeb rule) from the already-filtered published_tags,
and the template skips the row entirely when it's False across all three
render paths (initial page, load-more, infinite-scroll AJAX).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

website_sale_aplicoop/controllers/website_sale.py

@@ -847,6 +847,12 @@ class AplicoopWebsiteSale(WebsiteSale):
             product_display_info,
             filtered_products_dict,
         ) = self._prepare_products_maps(products, pricelist)
+        # Whether the tags row needs to be reserved on every card: if nothing in
+        # this batch has a published tag, the row is skipped entirely instead of
+        # leaving an empty aria-hidden gap on every product (see product-card.css).
+        any_product_has_tags = any(
+            v["published_tags"] for v in filtered_products_dict.values()
+        )
 
         # Inject draft sale demand context so ribbons/is_out_of_stock use forecasted net qty
         products, product_max_qty = self._prepare_draft_stock_data(products)
@@ -876,6 +882,7 @@ class AplicoopWebsiteSale(WebsiteSale):
                 "group_order": group_order,
                 "products": products,
                 "filtered_product_tags": filtered_products_dict,
+                "any_product_has_tags": any_product_has_tags,
                 "cart": cart,
                 "available_categories": available_categories,
                 "category_hierarchy": category_hierarchy,
@@ -986,6 +993,10 @@ class AplicoopWebsiteSale(WebsiteSale):
                 "product": product,
                 "published_tags": published_tags,
             }
+        # See eskaera_shop for why this decides whether to reserve the tags row.
+        any_product_has_tags = any(
+            v["published_tags"] for v in filtered_products_dict.values()
+        )
 
         product_display_info = {}
         for product in products_page:
@@ -1004,6 +1015,7 @@ class AplicoopWebsiteSale(WebsiteSale):
                 "group_order": group_order,
                 "products": products_page,
                 "filtered_product_tags": filtered_products_dict,
+                "any_product_has_tags": any_product_has_tags,
                 "product_supplier_info": product_supplier_info,
                 "product_price_info": product_price_info,
                 "product_display_info": product_display_info,
@@ -1112,6 +1124,10 @@ class AplicoopWebsiteSale(WebsiteSale):
             }
             for product in products_page
         }
+        # See eskaera_shop for why this decides whether to reserve the tags row.
+        any_product_has_tags = any(
+            v["published_tags"] for v in filtered_products_dict.values()
+        )
 
         # Inject draft demand context for ribbons/stock flags
         products_page, product_max_qty = self._prepare_draft_stock_data(products_page)
@@ -1126,6 +1142,7 @@ class AplicoopWebsiteSale(WebsiteSale):
                     "group_order": group_order,
                     "products": products_page,
                     "filtered_product_tags": filtered_products_dict,
+                    "any_product_has_tags": any_product_has_tags,
                     "product_supplier_info": product_supplier_info,
                     "product_price_info": product_price_info,
                     "product_display_info": product_display_info,

website_sale_aplicoop/views/website_templates.xml

@@ -661,7 +661,12 @@
                             <!-- Tags/supplier/origin always occupy their slot (empty and
                                  aria-hidden when the product has no value) so that the price
                                  row below lines up across every card in the grid row,
-                                 regardless of which optional fields a given product has. -->
+                                 regardless of which optional fields a given product has. The
+                                 tags row itself is only reserved when at least one product in
+                                 this batch actually has a tag (any_product_has_tags, computed
+                                 controller-side) — otherwise it would add a permanent empty
+                                 gap to every card for a feature nobody in the list uses. -->
+                            <t t-if="any_product_has_tags">
                                 <t t-if="product.product_tag_ids">
                                     <div class="product-tags">
                                         <t t-foreach="filtered_product_tags.get(product.id, {}).get('published_tags', product.product_tag_ids)" t-as="tag">
@@ -679,6 +684,7 @@
                                 <t t-else="">
                                     <div class="product-tags" aria-hidden="true" />
                                 </t>
+                            </t>
                             <t t-if="product_supplier_info.get(product.id)">
                                 <p class="product-supplier">
                                     <small>