Show the published line-up on the member event view instead of RSVP buttons

Once a game's line-up is published, "Your answers" switches to a read-only
status pill and a new Line-up card shows every unit/slot; a SELECTED member
can still report they can no longer make it, which flips them to Absent and
notifies the team's managers immediately (the closed-deadline guard doesn't
apply here, since a published line-up is usually well past it). Also shows
the full date for the "Meet" time, not just the hour.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ECGMEwrc2k4D8VQuwjstj9

events/services/lineup.py

@@ -7,9 +7,11 @@ through rather than touching the models directly.
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
+from club.services.access import event_season
 from events.models import Attendance, LineupSlot
 from members.models import Member
 from notifications.services import notify_members
+from teams.models import StaffAssignment
 
 #: Attendance statuses that mean "not actually available" -- these members
 #: stay exactly as they are on publish, never flipped to NOT_SELECTED, and
@@ -56,3 +58,17 @@ def publish_lineup(lineup):
         notify_members(selected_members, club=lineup.event.club, title=_("Line-up published"), body=body, source=lineup.event)
 
     return lineup
+
+
+def notify_dropout(event, member, note):
+    """A player who was SELECTED in a published line-up reporting, after the
+    fact, that they can no longer make it (mobile.views.EventDetailView.post's
+    "dropout" status) -- unlike an ordinary pre-deadline Out, the roster is
+    already locked in, so this goes straight to whoever can still act on it:
+    every current-season manager of the event's own teams (management
+    position, not every staffer -- a physio can't swap a line-up slot)."""
+    manager_ids = StaffAssignment.objects.filter(team__in=event.teams.all(), position__management_position=True, season=event_season(event)).values_list("member_id", flat=True).distinct()
+    managers = Member.objects.filter(pk__in=manager_ids)
+    if managers:
+        body = _("%(member)s can no longer make it to %(event)s: “%(note)s”") % {"member": member.get_full_name(), "event": event.title, "note": note}
+        notify_members(managers, club=event.club, title=_("Line-up dropout"), body=body, source=event)

events/tests.py

@@ -16,7 +16,7 @@ from club.services.onboarding import mark_bypassed, mark_complete
 from features.models import Maintenance
 from members.models import Group, GroupMembership, Member
 from notifications.models import Notification
-from teams.models import Position, RefereeLevel, RefereeProfile, Team, TeamMembership
+from teams.models import Position, RefereeLevel, RefereeProfile, StaffAssignment, Team, TeamMembership
 
 from .admin import EventAdminForm
 from .models import Attendance, Competition, Event, EventReferee, EventSeries, Lineup, LineupSlot, LineupUnit, Location, Opponent
@@ -34,7 +34,7 @@ from .services import (
     team_no_shows,
 )
 from .services.calendar import add_months, month_bounds, month_grid, season_grid, week_bounds, week_grid
-from .services.lineup import clear_slot, place_member, publish_lineup
+from .services.lineup import clear_slot, notify_dropout, place_member, publish_lineup
 from .services.rbihf_import import RBIHFImportError, apply_plan, build_plan, extract_team_id, parse_fixtures, suggested_location, suggested_opponent
 from .services.referees import RefereeAssignmentError, add_external_referee, assign_referee, conflicting_events, eligible_referees, needs_referee_management, remove_referee, set_referee_fee
 from .tasks import send_deadline_reminders
@@ -466,6 +466,28 @@ class LineupServiceTests(EventsTestBase):
         notified_member_ids = set(Notification.objects.filter(member__in=[self.alice, self.bob]).values_list("member_id", flat=True))
         self.assertEqual(notified_member_ids, {self.alice.pk})
 
+    def test_notify_dropout_notifies_the_teams_managers(self):
+        event, _lineup, _unit, _slot = self.make_game_with_lineup()
+        manager = Member.objects.create(first_name="Cara", last_name="Coach")
+        management_position = Position.objects.create(club=self.club, name="Head coach", short_name="HC", staff_position=True, management_position=True)
+        StaffAssignment.objects.create(team=self.team, member=manager, season=self.season, position=management_position)
+
+        notify_dropout(event, self.alice, "Twisted an ankle")
+
+        notification = Notification.objects.get(member=manager)
+        self.assertIn(self.alice.get_full_name(), notification.body)
+        self.assertIn("Twisted an ankle", notification.body)
+
+    def test_notify_dropout_does_not_notify_non_management_staff(self):
+        event, _lineup, _unit, _slot = self.make_game_with_lineup()
+        physio = Member.objects.create(first_name="Pat", last_name="Physio")
+        physio_position = Position.objects.create(club=self.club, name="Physio", short_name="PH", staff_position=True, management_position=False)
+        StaffAssignment.objects.create(team=self.team, member=physio, season=self.season, position=physio_position)
+
+        notify_dropout(event, self.alice, "Twisted an ankle")
+
+        self.assertFalse(Notification.objects.filter(member=physio).exists())
+
 
 class RosterChangeSyncTests(EventsTestBase):
     def test_adding_roster_member_syncs_future_events(self):