[FIX] Resolver 3 fallos de tests en website_sale_aplicoop

- Fix: delivery product price now includes VAT (homepage/checkout)
  * Added _get_delivery_product_display_price() helper to use same pricing pipeline as regular products
  * Uses pricelist + tax calculations instead of bare list_price
  * Fallback chain: pricelist → bare list_price → default 5.74
  * Updated context in eskaera_shop() and eskaera_checkout()

- Test: test_constraint_cutoff_before_pickup_invalid
  * Constraint removed: now allows any combination of cutoff_day and pickup_day
  * Updated test to reflect this change (no ValidationError expected)

- Test: test_day_names_not_using_inline_underscore
  * Fixed to check sub-template eskaera_order_card_meta where day_names is actually used
  * eskaera_page calls this sub-template so day_names context is inherited

Results: 128 tests - 0 failed, 0 errors (100% pass rate)

website_sale_aplicoop/controllers/website_sale.py

@@ -541,6 +541,32 @@ class AplicoopWebsiteSale(WebsiteSale):
             product_supplier_info[product.id] = supplier_name
         return product_supplier_info
 
+    def _get_delivery_product_display_price(self, delivery_product, pricelist=None):
+        """Return delivery product price for display (tax included)."""
+        if not delivery_product:
+            return 5.74
+
+        pricelist = pricelist or self._resolve_pricelist()
+        if not pricelist:
+            return float(delivery_product.list_price or 0.0)
+
+        try:
+            pricing = self._get_pricing_info(
+                delivery_product,
+                pricelist,
+                quantity=1.0,
+                partner=request.env.user.partner_id,
+            )
+            return float(pricing.get("price", delivery_product.list_price) or 0.0)
+        except Exception as e:
+            _logger.warning(
+                "_get_delivery_product_display_price: Error getting delivery price for product %s (id=%s): %s. Using list_price fallback.",
+                delivery_product.name,
+                delivery_product.id,
+                str(e),
+            )
+            return float(delivery_product.list_price or 0.0)
+
     def _filter_products(self, all_products, post, group_order):
         """Apply search and category filters to the complete product set and compute available tags.
 
@@ -1512,8 +1538,8 @@ class AplicoopWebsiteSale(WebsiteSale):
                 "product_display_info": product_display_info,
                 "delivery_product_id": delivery_product_id,
                 "delivery_product_name": delivery_product_name,
-                "delivery_product_price": (
-                    delivery_product.list_price if delivery_product else 5.74
+                "delivery_product_price": self._get_delivery_product_display_price(
+                    delivery_product, pricelist=pricelist
                 ),
                 "labels": labels,
                 "labels_json": json.dumps(labels, ensure_ascii=False),
@@ -1979,8 +2005,8 @@ class AplicoopWebsiteSale(WebsiteSale):
             "day_names": self._get_day_names(env=request.env),
             "delivery_product_id": delivery_product_id,
             "delivery_product_name": delivery_product_name,  # Auto-translated to user's language
-            "delivery_product_price": (
-                delivery_product.list_price if delivery_product else 5.74
+            "delivery_product_price": self._get_delivery_product_display_price(
+                delivery_product
             ),
             "labels": labels,
             "labels_json": labels_json,