Add lesson marks 2-5 from lesson quality once per slot.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Simulation/LessonLearningSystem.cs

@@ -9,8 +9,9 @@ namespace HSchool.Simulation;
 /// <summary>
 /// Grows skills for people who are actually in the lesson: at the room, not walking, not off
 /// doing something else, and with the assigned teacher standing there. A pupil without today's
-/// textbook in the bag learns at <see cref="BehaviorDef.LessonNoTextbookFactor"/>. The formula
-/// lives in <see cref="HSchool.Ai.LessonLearning"/>.
+/// textbook in the bag learns at <see cref="BehaviorDef.LessonNoTextbookFactor"/>. Writes one
+/// mark 2–5 per lesson slot from the same quality inputs. The formula lives in
+/// <see cref="HSchool.Ai.LessonLearning"/>.
 /// </summary>
 internal static class LessonLearningSystem
 {
@@ -69,7 +70,7 @@ internal static class LessonLearningSystem
 
                 var personId = identity.Id;
                 var person = school.Roster.People.FirstOrDefault(row => row.Id.Equals(personId, StringComparison.Ordinal));
-                if (person is null)
+                if (person is null || !person.IsStudent)
                 {
                     return;
                 }
@@ -86,6 +87,7 @@ internal static class LessonLearningSystem
                 if (!TeacherStandingIn(places, lesson.TeacherId, lesson.RoomId))
                 {
                     school.TryLogLessonOnce(personId, PersonLogTypes.LessonNoTeacher, lesson.Subject);
+                    TryWriteAbsentTeacherMark(school, person, lesson, rules);
                     return;
                 }
 
@@ -97,7 +99,7 @@ internal static class LessonLearningSystem
                 }
 
                 var textbookFactor = 1f;
-                if (person.IsStudent && !LessonLearning.HasTextbookInBag(person.Items, lesson.Subject))
+                if (!LessonLearning.HasTextbookInBag(person.Items, lesson.Subject))
                 {
                     textbookFactor = rules.LessonNoTextbookFactor;
                     school.TryLogLessonOnce(personId, PersonLogTypes.LessonNoTextbook, lesson.Subject);
@@ -109,6 +111,7 @@ internal static class LessonLearningSystem
                     ? found
                     : new Dictionary<string, float>(StringComparer.Ordinal);
                 var teacherSkill = LessonLearning.AverageTeacherSkill(subject, taught, catalog);
+                var traitOffset = AverageTraitOffset(catalog, traits, subject);
                 foreach (var share in subject.Skills)
                 {
                     if (!catalog.Skills.TryGetValue(share.Skill, out var skill) || skill.Abstract)
@@ -133,9 +136,57 @@ internal static class LessonLearningSystem
                         warmth,
                         textbookFactor);
                 }
+
+                TryWriteQualityMark(school, person, lesson, rules, hunger, traitOffset, teacherSkill, warmth, textbookFactor);
             });
     }
 
+    private static void TryWriteAbsentTeacherMark(
+        School school,
+        Person person,
+        LessonPlacement lesson,
+        BehaviorDef rules)
+    {
+        if (rules.LessonMarkWhenNoTeacher is not { } mark)
+        {
+            return;
+        }
+
+        if (!school.TryClaimLessonMark(person.Id, school.Clock.Time.Date, lesson.Period))
+        {
+            return;
+        }
+
+        if (LessonMarkMemory.Record(person, lesson.Subject, mark, school.Clock.Time, lesson.Period, rules))
+        {
+            school.RosterTalkDirty = true;
+        }
+    }
+
+    private static void TryWriteQualityMark(
+        School school,
+        Person person,
+        LessonPlacement lesson,
+        BehaviorDef rules,
+        float hunger,
+        int traitOffset,
+        float teacherSkill,
+        float warmth,
+        float textbookFactor)
+    {
+        if (!school.TryClaimLessonMark(person.Id, school.Clock.Time.Date, lesson.Period))
+        {
+            return;
+        }
+
+        var quality = LessonLearning.Quality(hunger, traitOffset, teacherSkill, warmth, textbookFactor);
+        var mark = LessonLearning.Mark(quality, rules);
+        if (LessonMarkMemory.Record(person, lesson.Subject, mark, school.Clock.Time, lesson.Period, rules))
+        {
+            school.RosterTalkDirty = true;
+        }
+    }
+
     private static bool IsStanding(Presence presence) =>
         presence.NodeId is not null && presence.Path.Length == 0 && presence.RemainingMinutes <= 0;
 
@@ -170,6 +221,19 @@ internal static class LessonLearningSystem
         return school.Roster?.Classes.FirstOrDefault(row => row.Id.Equals(person.ClassId, StringComparison.Ordinal));
     }
 
+    private static int AverageTraitOffset(DefCatalog catalog, PersonTraits traits, SubjectDef subject)
+    {
+        var total = 0;
+        var count = 0;
+        foreach (var share in subject.Skills)
+        {
+            total += TraitOffset(catalog, traits, share.Skill);
+            count++;
+        }
+
+        return count == 0 ? 0 : total / count;
+    }
+
     private static int TraitOffset(DefCatalog catalog, PersonTraits traits, string skill)
     {
         var offset = 0;