[IMP] website_sale_aplicoop: automate non-weekly group order cycles

One-time, biweekly and monthly group orders now follow the same cron
confirmation flow as weekly ones (confirm sale orders + batch pickings
when the cycle cutoff passes):

- Biweekly/monthly keep the cutoff_day/pickup_day weekday scheme on a
  recurrence grid anchored at start_date (creation date as fallback):
  cutoffs advance +14 days / +1 month snapped to cutoff_day, with
  catch-up after cron downtime. Previously they behaved as weekly.
- One-time orders (specials/promotions) are driven by end_date
  (cutoff_date = end_date); once passed, the cron confirms, batches
  and closes the group order.
- end_date keeps its "empty = permanent" meaning for recurring orders.
- Website draft-cart lookup window is now period-aware instead of
  assuming a 6-day weekly cycle.
- New cron tests for once/biweekly/monthly cycles; i18n es/eu updated.

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

website_sale_aplicoop/i18n/es.po

@@ -663,26 +663,39 @@ msgstr "Día en que las compras se detienen"
 #. module: website_sale_aplicoop
 #: model:ir.model.fields,help:website_sale_aplicoop.field_group_order__cutoff_day
 msgid ""
-"Day when purchases stop and the consumer group order is locked for this "
-"week."
+"Day when purchases stop and the consumer group order is locked for the "
+"current cycle."
 msgstr ""
-"Día en que se detienen las compras y el pedido del grupo de consumidores se "
-"bloquea para esta semana."
+"Día en que se detienen las compras y el pedido de grupo se bloquea para el "
+"ciclo actual."
 
 #. module: website_sale_aplicoop
 #: model:ir.model.fields,help:website_sale_aplicoop.field_group_order__start_date
-msgid "Day when the consumer group order opens for purchases"
-msgstr "Día en que el pedido del grupo de consumidores se abre para compras"
+msgid ""
+"Day when the consumer group order opens for purchases. For biweekly and "
+"monthly orders it also anchors the recurrence: cycles advance every 14 days "
+"/ 1 month from the first cutoff day after this date."
+msgstr ""
+"Día en que el pedido de grupo se abre para compras. En pedidos quincenales y"
+" mensuales también ancla la recurrencia: los ciclos avanzan cada 14 días / 1"
+" mes desde el primer día de corte posterior a esta fecha."
 
 #. module: website_sale_aplicoop
 #: model_terms:ir.ui.view,arch_db:website_sale_aplicoop.view_group_order_form
-msgid "Day when the order closes (empty = permanent)"
-msgstr "Día en que el pedido se cierra (vacío = permanente)"
+msgid ""
+"Day when the order closes (empty = permanent). One-time orders are confirmed"
+" and closed once it has passed"
+msgstr ""
+"Día en que se cierra el pedido (vacío = permanente). Los pedidos puntuales "
+"se confirman y cierran una vez pasada la fecha"
 
 #. module: website_sale_aplicoop
 #: model_terms:ir.ui.view,arch_db:website_sale_aplicoop.view_group_order_form
-msgid "Day when the order opens for purchases"
-msgstr "Día en que el pedido se abre para compras"
+msgid ""
+"Day when the order opens for purchases (anchors biweekly/monthly cycles)"
+msgstr ""
+"Día en que el pedido se abre para compras (ancla los ciclos "
+"quincenales/mensuales)"
 
 #. module: website_sale_aplicoop
 #: model_terms:ir.ui.view,arch_db:website_sale_aplicoop.eskaera_shop_products
@@ -1120,8 +1133,16 @@ msgstr "Si está marcado, algunos mensajes tienen un error de entrega."
 
 #. module: website_sale_aplicoop
 #: model:ir.model.fields,help:website_sale_aplicoop.field_group_order__end_date
-msgid "If empty, the consumer group order is permanent"
-msgstr "Si está vacío, el pedido del grupo de consumidores es permanente"
+msgid ""
+"Recurring orders (weekly, biweekly, monthly): if empty, the consumer group "
+"order is permanent. One-time orders: this date closes the single cycle; once"
+" it has passed, the cron confirms the linked sale orders and closes the "
+"order."
+msgstr ""
+"Pedidos recurrentes (semanal, quincenal, mensual): si está vacía, el pedido "
+"de grupo es permanente. Pedidos puntuales: esta fecha cierra el ciclo único;"
+" una vez pasada, el cron confirma los pedidos de venta vinculados y cierra "
+"el pedido."
 
 #. module: website_sale_aplicoop
 #: model:ir.model.fields,field_description:website_sale_aplicoop.field_group_order__image