feat: all-season assignments

config/services.yaml

@@ -79,6 +79,12 @@ parameters:
     season_start: '11-01'
     season_end: '04-01'
 
+    # How far ahead of the destination's first travel day a season assignment's checklist
+    # entries fall due. A relative date expression, applied to destination.dateFrom, and the
+    # single definition of both deadlines: the first is this offset, the second defaults to
+    # the first. Per-entry overrides are stored on the task row; this is what they override.
+    season_task_deadline_offset: '-1 month'
+
     # Houses, hotel code: name. The name is used both as a label and to match
     # destination.hotel, the code to match destination.hotelCode.
     houses:
@@ -124,6 +130,7 @@ services:
             $mailingBusTransport: '%mailing_bus_transport%'
             $seasonStart: '%season_start%'
             $seasonEnd: '%season_end%'
+            $seasonTaskDeadlineOffset: '%season_task_deadline_offset%'
 
     # Tagged by interface rather than listed by hand: order between collectors is
     # irrelevant, so the only thing an explicit list could add here is the chance to