Add AI parent meetings after a class last lesson.

Class teachers rarely keep the homeroom; invited parents walk onto the map, opinions nudge, then parents leave OffCampus. No player schedule API.

src/HSchool.Simulation/PresenceSystem.cs

@@ -331,7 +331,8 @@ internal static class PresenceSystem
         var bound = Duty.IsOtherStaff(person)
             ? slot.Kind != DaySlotKind.Outside
             : slot.Kind == DaySlotKind.Lesson && lessons.Any(lesson => lesson.Period == slot.Index);
-        if (DirectorSummonSystem.IsSummoned(school, person.Id))
+        if (DirectorSummonSystem.IsSummoned(school, person.Id)
+            || ParentMeetingSystem.IsInMeeting(school, person.Id))
         {
             bound = true;
         }
@@ -352,9 +353,24 @@ internal static class PresenceSystem
             return null;
         }
 
+        if (activity.IsActive && ActivitySystem.IsParentMeeting(activity.ActionId))
+        {
+            return null;
+        }
+
         if (!presence.IsOnCampus)
         {
             intent = Intent.None;
+            if (ParentMeetingSystem.TryDutyRoom(school, person.Id, out var meetingArrive))
+            {
+                presence = PresenceStepper.StartWalk(
+                    Presence.OffCampus,
+                    walks,
+                    meetingArrive,
+                    headingHome: false);
+                return null;
+            }
+
             if (plan.AppearAt is { } appear && now >= appear && (plan.WalkHomeAt is null || now < plan.WalkHomeAt))
             {
                 var dest = plan.FirstRoom ?? Duty.RoomAt(
@@ -379,7 +395,10 @@ internal static class PresenceSystem
             return null;
         }
 
-        if (plan.WalkHomeAt is { } leave && now >= leave && !DirectorSummonSystem.IsSummoned(school, person.Id))
+        if (plan.WalkHomeAt is { } leave
+            && now >= leave
+            && !DirectorSummonSystem.IsSummoned(school, person.Id)
+            && !ParentMeetingSystem.IsInMeeting(school, person.Id))
         {
             activity = PersonActivity.Idle;
             intent = Intent.None;
@@ -399,6 +418,11 @@ internal static class PresenceSystem
             duty = summonRoom;
             bound = true;
         }
+        else if (ParentMeetingSystem.TryDutyRoom(school, person.Id, out var meetingRoom))
+        {
+            duty = meetingRoom;
+            bound = true;
+        }
 
         if (duty is null)
         {