Add recess quarrels, rare yard and gym fights, and apologies.

Bullies remember a victim by a trait field, a defender can join, staff break up a fight with a reprimand, and skip empty time clears leftover clashes so they cannot last forever.

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

src/HSchool.Content/PeopleDefValidator.cs

@@ -266,6 +266,16 @@ internal static class PeopleDefValidator
         {
             throw new ContentLoadException($"TraitDef '{trait.DefName}' whisperCatchMultiplier cannot be negative.");
         }
+
+        if (trait.ConflictChance < 0f)
+        {
+            throw new ContentLoadException($"TraitDef '{trait.DefName}' conflictChance cannot be negative.");
+        }
+
+        if (trait.ApologyChance < 0f)
+        {
+            throw new ContentLoadException($"TraitDef '{trait.DefName}' apologyChance cannot be negative.");
+        }
     }
 
     private static void ValidateNeed(NeedDef need)
@@ -612,6 +622,21 @@ internal static class PeopleDefValidator
         {
             throw new ContentLoadException($"BehaviorDef '{behavior.DefName}' teacher-talk weights cannot be negative.");
         }
+
+        if (behavior.QuarrelChance is < 0f or > 1f)
+        {
+            throw new ContentLoadException($"BehaviorDef '{behavior.DefName}' quarrelChance must be 0–1.");
+        }
+
+        if (behavior.FightChance is < 0f or > 1f)
+        {
+            throw new ContentLoadException($"BehaviorDef '{behavior.DefName}' fightChance must be 0–1.");
+        }
+
+        if (behavior.ApologyRestoreFraction is < 0f or > 1f)
+        {
+            throw new ContentLoadException($"BehaviorDef '{behavior.DefName}' apologyRestoreFraction must be 0–1.");
+        }
     }
 
     private static void ValidateTopic(TopicDef topic, DefCatalog catalog)