Add lesson whispers, teacher catch chance, and after-bell teacher talk.

Whispering cuts lesson skill gain from BehaviorDef; a teacher in the room may interrupt into a discipline circle, and pedagogy scales the pupil's opinion of the teacher.

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

tests/HSchool.Content.Tests/BehaviorDefTests.cs

@@ -113,6 +113,8 @@ public class BehaviorDefTests
         Assert.NotNull(catalog.BehaviorRules);
         Assert.Equal(0, catalog.BehaviorRules.CommuteRainMinutes);
         Assert.Equal(0, catalog.BehaviorRules.CommuteSnowMinutes);
+        Assert.Equal(0.4f, catalog.BehaviorRules.LessonWhisperSkillFactor);
+        Assert.Equal(0.4f, catalog.BehaviorRules.WhisperCatchChance);
     }
 
     [Theory]

tests/HSchool.Content.Tests/TopicDefTests.cs

@@ -16,6 +16,10 @@ public class TopicDefTests
         Assert.True(catalog.Topics.Count >= 8);
         Assert.True(catalog.Topics.ContainsKey("TopicStudy"));
         Assert.Contains("study", catalog.Topics["TopicStudy"].Tags);
+        Assert.True(catalog.Topics["TopicGames"].WhisperOnLesson);
+        Assert.False(catalog.Topics["TopicRude"].WhisperOnLesson);
+        Assert.True(catalog.Topics.ContainsKey("TopicPraise"));
+        Assert.True(catalog.Topics.ContainsKey("TopicDiscipline"));
     }
 
     [Fact]